[Botany • 2026] Primula chongqingensis (Primulaceae) • A New Species from Chongqing, China

Primula chongqingensis K.Liang & S.R.Yi, 

in Liang, Zhang et Yi, 2026.

DOI: doi.org/10.11646/phytotaxa.763.2.6 

 x.com/Jungle_KL

Abstract

Primula chongqingensis K.Liang & S.R.Yi, sp. nov., a new species of Primula sect. Ranunculoides from Chongqing, China, is described. The new species is currently known only from Qianjiang District, where it grows on wet moss-covered rock faces and dripping cliffs beside streams and below waterfalls in shaded valley woodland. It is most similar to P. ranunculoides in overall morphology, but differs by its smaller leaves with markedly fewer lateral segments, stable long-homostylous flowers, pedicels and calyces covered with short glandular hairs, and a relatively short calyx less than half as long as the corolla tube, usually reaching ca. one third of it. Filiform propagative shoots with apical bulblets are only occasionally produced in P. chongqingensis, whereas similar structures are consistently and abundantly produced in P. ranunculoides. These combined vegetative and reproductive differences support its recognition as a distinct species rather than an infraspecific taxon of P. ranunculoides. A morphological description, distribution information, provisional conservation assessment, a diagnostic comparison with P. ranunculoides, and a key to the species of Primula sect. Ranunculoides are provided.

Eudicots, narrow endemic, homostyly, morphological comparison, Qianjiang District, sect. Ranunculoides, taxonomy, Wuling Mountains

Primula chongqingensis K.Liang & S.R.Yi, sp. nov.

KE (Jungle) LIANG, HONG-JING ZHANG and SI-RONG YI. 2026. Primula chongqingensis (Primulaceae), A New Species from Chongqing, China.  Phytotaxa. 763(2);  193-200. DOI: doi.org/10.11646/phytotaxa.763.2.6 [2026-06-19]

 x.com/Jungle_KL/status/2067732578585460962

[Botany • 2026] Primula xingyiensis (Primulaceae) • A New Species from Guizhou, China

Primula xingyiensis  Z.K.Wu & C.Y.Deng,

in Shi, Deng, Lang, Liu et Wu, 2026.

DOI: doi.org/10.3897/phytokeys.276.195710

Abstract

Primula xingyiensis Z.K.Wu & C.Y.Deng, a new species of Primulaceae from Guizhou, China, is described and illustrated. Morphological evidence places P. xingyiensis within Primula sect. Carolinella, a section characterised by plants completely efarinose but bearing pubescent or glandular hairs; leaf base cordate to rounded, rarely broadly cuneate, with distinct petioles; calyx campanulate or narrowly campanulate, longer than its diameter, split to 1/3–1/2 of its length; and capsule oblong, dehiscing nearly calyptrate at maturity. The new species is distinguished by its gracile habit, shortened stem, small leaves with long villous hairs on both surfaces, long-styled homostylous flowers, and a corolla that is 7–8 times as long as the calyx. Information on the distribution, morphological comparisons with closely related species, and the conservation status of the new species is also provided, along with a key to the known species of Primula sect. Carolinella.

Key words: Conservation status, diversity, Guizhou, nomenclature, taxonomy, xing yi bao chun

Primula xingyiensis sp. nov.
  A, B. Habitat; C, D. Habit during flowering; E. Leaves, the left: adaxial surface, the right: abaxial surface; F. Scape; G. Frontal view of flower; H. Dissected corolla showing anthers and stigmas; I. Capsule.

Photographed by Zhikun Wu.

Two morphologically similar taxa and Primula xingyiensis.
A. Holotype of P. calyptrata (X Gong 02815, KUN!); B. Isotype of P. intanoensis (M. Tagawa, K. Iwatsuki & N. Fukuoka 2863, HUH!); C. Holotype of Primula xingyiensis (ZKWU2025210, KUN!);
D. P. calyptrata; E, F. P. xingyiensis; D–F. Photographed by Zhikun Wu.

 Xiang-Ting Shi, Chao-Yi Deng, Yuan-Xing Lang, Zeng-Cai Liu and Zhi-Kun Wu. 2026. Primula xingyiensis (Primulaceae), A New Species in Primula sect. Carolinella from Guizhou, China. PhytoKeys. 276: 1-11. DOI: doi.org/10.3897/phytokeys.276.195710 [5 Jun 2026]

[Botany • 2026] Primula maershanensis (Primulaceae) • A New Species from Sichuan, China

 

Primula maershanensis  J.L.Gu & Z.K.Wu, 

in Sheng, Y.-M. Wu, Gu, Lin, Zhou, Zheng and Z.-K. Wu, 2026. 

马耳山报春  ||  DOI: doi.org/10.3897/phytokeys.274.191386 

Abstract

Primula maershanensis J.L.Gu & Z.K.Wu, a new species of Primulaceae from Sichuan, China, is described and illustrated. Morphological evidence supports the placement of P. maershanensis within Primula sect. Auganthus, a section characterized by leaves that are shallowly to deeply lobed and covered with hairs and by a distinctively broad calyx with a flattened base. The new species is distinguished from other species in this section by its short rhizome and nearly fleshy roots; subpurple petioles and scapes; leaf blade suborbicular, wider than long, margin palmately 5–9-lobed to the middle of the blade; and a bright yellow corolla associated with long-homostylous flowers. Information on the distribution, morphological comparisons with closely related species, and the conservation status of the new species is also provided, along with a key to the known species of Primula sect. Auganthus.

Key words: Conservation status, diversity, maer shan bao chun, nomenclature, Sichuan, taxonomy

Primula maershanensis sp. nov. 

A. Habitat; B, C. Habit during flowering; D. Roots; E. Leaves, left: upper surface, right: lower surface; F. Flower scape; G. Flower bract (enlarged view); H. Bracts; I. Flower, lateral view; J. Dissected corolla showing anthers and stigmas; K. Calyx and pedicel; L. Outside of dissected calyx; M. Infructescence; N. Young fruits; O. Dissected young fruit. 

Photographed by Zhikun Wu, Mingyun Sheng, and Jiulin Gu.

Primula maershanensis J.L.Gu & Z.K.Wu, sp. nov.

 

Diagnosis. The new species is most similar to P. sinensis, P. rupestris, and P. jiangyouensis in sharing leaves and stems covered with hairs, lobed leaf blades, distinctly petiolate leaves, and a distinctively broad and flat-bottomed calyx. However, it is distinguished from the latter three mainly by several morphological features: a short rhizome and nearly fleshy roots; subpurple petioles and scapes; leaf blade suborbicular, wider than long, palmately 5–9-lobed to approximately 1/2 of its blade, long-homostylous flowers with a bright yellow corolla (Figs 1, 2). For a more accurate delimitation of all known species in this section, we observed living plants and captured their photographs, in addition to examining herbarium specimens of the other seven species within this section (Figs 3, 4). The main morphological distinctions between P. maershanensis and P. jiangyouensis, P. sinensis, and P. rupestris are summarized in Table 1.

 

Ming-yun Sheng, Yuan-mi Wu, Jiu-lin Gu, Hong-qiang Lin, Wei Zhou, Lei Zheng and Zhi-kun Wu. 2026. Primula maershanensis (Primulaceae), A New Species in Primula sect. Auganthus from Sichuan, China. PhytoKeys. 274: 61-71. DOI: doi.org/10.3897/phytokeys.274.191386 [28 Apr 2026]

[Botany • 2021] Dionysia jamzadiae (Primulaceae) • A New Species from the Fars Province of Iran

Dionysia jamzadiae Lidén, M.Irvine, Alvén & Mehregan, 

in Lidén, Irvine, Alvén et Mehregan, 2021. 

DOI: doi.org/10.24823/EJB.2021.396

ABSTRACT

Dionysia jamzadiae Lidén, M.Irvine, Alvén & Mehregan, from the east Zagros Mountains, Fars, Iran, is described as new to science. It belongs in section Dionysiopsis and is similar to D. oreodoxa Bornm. but differs in, for example, its sparsely glandular hairy or almost glabrous corolla with emarginated lobes (densely non-glandular pubescent with entire lobes in D. oreodoxa). Dionysia jamzadiae is known from two places and is quite abundant at the type locality.

Keywords: New species, Fars, Iran, Dionysia

Dionysia jamzadiae Lidén, M.Irvine, Alvén & Mehregan, sp. nov.
Brevistylous (A) and longistylous (B) plants in the type locality.

 Photograph: M. Lidén.

 

Dionysia jamzadiae Lidén, M.Irvine, Alvén & Mehregan, sp. nov.

Differs from Dionysia oreodoxa Bornm., to which it is most similar, in its sparsely glandular hairy or almost glabrous corolla with emarginate lobes (versus densely non-glandular pubescent with entire lobes).

 

 

M. Lidén, M. Irvine, A. Alvén and I. Mehregan. 2021. Dionysia jamzadiae (Primulaceae), A New Species from the Fars Province of Iran. Edinburgh Journal of Botany. 78; DOI: doi.org/10.24823/EJB.2021.396 [2021-12-02]

Researchgate.net/publication/356756037_DIONYSIA_JAMZADIAE_A_NEW_SPECIES_FROM_THE_FARS_PROVINCE_OF_IRAN

[Botany • 2026] Sadiria kachinensis (Primulaceae: Myrsinoideae) • A New Species from Myanmar

Sadiria kachinensis Utteridge & Nob.Tanaka,

in Utteridge, Armstrong, Yoneda et Tanaka. 2026.  

DOI: doi.org/10.11646/phytotaxa.744.3.1

 

Abstract

Sadiria kachinensis from Kachin State, Myanmar is described and illustrated as a species new to science. It is morphologically similar to S. boweri and S. solanifolia but differs in several characters especially the smaller leaves on the vegetative shoots and the flowering branches, larger inflorescences and petals, and smaller sepals. In addition, this new species is compared to S. eugeniifolia var. burmanica, the only other member of Sadiria in Myanmar.

 Burma, Ericales, Indo-China, South-East Asia, taxonomy, Eudicots

Sadiria kachinensis Utteridge & Nob.Tanaka.
 A habit; B detail of leaf margin; C inflorescences; D flower; E single calyx lobe; F detail of overlapping corolla lobes; G flower opened to show stamens opposite the corolla lobes; H ovary and style (flower with corolla removed); I stamen abaxial view; J stamen adaxial view; K ovary; L fruit with persistent style.

Drawn from Armstrong et al. 4307 (TNS). Scale bars: A = 3 cm, C, D, G, H, L = 5 mm, E & F = 1 mm, I, J & K = 3 mm. Illustration by Kaoru Yoneda.

Sadiria kachinensis Utteridge & Nob.Tanaka.
A. habit; B. plagiotropic (flowering) branch with inflorescences and flowers pre-anthesis; C. plagiotropic branch with fruits; D. inflorescence/flower detail, note exserted styles in the flowers on the right hand side; E. fruit detail, note persistent style (dry and black).

 Photographed by Kate Armstrong.

Sadiria kachinensis Utteridge & Nob.Tanaka, sp. nov. 

 Recognised in the genus Sadiria by the leaves (ortho- and plagiotropic) drying greenish and the shorter plagiotropic reproductive branches, and unique amongst those species in the combination of the following characters: 3–4 leaves in pseudowhorls along the erect (orthotropic) stems, these orthotropic leaves, elliptic and 9.5–13 × 3.5–4.5 cm; the lateral plagiotropic (reproductive) flower-bearing branches (4–)6.5–11 cm long, with 3(–5) leaves along the length of the branch; orthotropic and reproductive shoots leaves drying green; pendulous inflorescences sessile or with a very short rachis to 2 mm long; the corolla fused for approximately three-quarters of its length; stamens with anthers 2 mm long; and the style conspicuously exserted at anthesis and extending ca. 3 mm beyond the apex of the corolla lobes.

Timothy UTTERIDGE, Kate E. ARMSTRONG, Kaoru YONEDA and Nobuyuki TANAKA. 2026. Sadiria kachinensis (Myrsinoideae, Primulaceae), A New Species from Myanmar.  Phytotaxa. 744(3); 205-211. DOI: doi.org/10.11646/phytotaxa.744.3.1 [2026-03-10]

[Botany • 2026] Primula himalayana (Primulaceae) • A New Species from eastern Himalaya, India

 

Primula himalayana B. Hajong, Harsh Singh & P. Bharali, 

in Hajong, Singh et Bharali, 2026. 

DOI: doi.org/10.1002/njb.05052

 

Abstract

Primula himalayana sp. nov., a new species of Primulaceae, is described and illustrated from Tawang, Lutrem, 4238 m a.s.l., Arunachal Pradesh, India. It grows under Juniperus and Berberis scrub forest in an alpine meadow. The new species belong in Primula section Cordifoliae and is resembling P. gambeliana, but differs from the latter by the lamina puberulent with a white protuberance on the tips of the teeth, petiole 2‒3 times longer than lamina and white puberulent, scape long with many flowers, flowers yellow with orange-yellow center and along corolla tube, corolla lobes elliptic, anther basifixed, and ovary cylindrical without any teeth.

Keywords: Arunachal Pradesh, new taxon, Primrose, Primula sect Coridfoliae, Tawang, taxonomy

Primula himalayana B. Hajong, Harsh Singh & P. Bharali sp. nov.
 (A) Habit, (B) leaf, (C) side view of an umbel, (D) face view of an umbel, (Ei) bract, (Eii) sepals, (F) side view of a dissected ‘pin'-eyed morphs flower, (G) side view of a dissected ‘thrum'-eyed morphs flower, (H) face view of a dissected ‘pin'-eyed morphs flower, (I) face view of a dissected ‘thrum'-eyed morphs flower, (J) white puberulent on the corolla margin, (K) stamen, (L) carpel (left ‘thrum'-eyed morphs, right ‘pin'-eyed morphs).

Primula himalayana B. Hajong, Harsh Singh & P. Bharali sp. nov.
 (A–B) Habit, (C) face view of an umbel, (D) leaf;
Primula gambeliana G.Watt (E) Habit, (F) face view of an umbel, (G) leaf.

Primula himalayana B. Hajong, Harsh Singh & P. Bharali sp. nov.  

Diagnosis: A new species resembling P. gambelina due the appearance of leaves and flowers, but differing in lamina puberulent with a white protuberance on the tip of each teeth (versus glabrous and without any protuberances), petiole 2‒3 times longer than lamina and white-puberulent (versus 3‒5 times longer than lamina, glabrous), scape 15‒35 cm long with 4‒17 flowers in the umbel (versus 6‒15 cm long with 2‒8 flowers), flowers yellow with an orange-yellow center and ca 1.5‒1.9 cm long corolla tube (versus bright reddish-pink or purple-pink to violet-purple with yellow center, ca 1.2 cm long), corolla lobes elliptic (versus obcordate or broadly obovate), anthers basifixed (versus dorsi-basifixed), ovary quadrate–globose without any teeth (versus globose–cylindric with 5 or more apical teeth).

Etymology: The species epithet ‘himalayana' is derived from the Great Himalaya Mountains – a biodiversity hotspot and widely considered as the geographical origin as well as the centre of diversity and distribution of Primula.

Bipankar Hajong, Harsh Singh and Pankaj Bharali. 2026. Primula himalayana sp. nov., A New Species from eastern Himalaya, India. Nordic Journal of Botany. DOI: doi.org/10.1002/njb.05052 [11 March 2026]

[Botany • 2026] Primula daguanensis (Primulaceae) • A New Species from Yunnan, China

Primula daguanensis W.B.Ju, B.Xu & J.Ru,

in Ru, Cheng, Xu, Guo et Ju, 2026. 

DOI: doi.org/10.3897/phytokeys.270.171019  

 

Abstract

Primula daguanensis W.B.Ju, B.Xu & J.Ru is described and illustrated as a new species from Daguan County, Yunnan Province, China. It is assigned to the Primula sect. Petiolares subsect. Davidii based on its conspicuous bud scales, which are membranous and persistent at anthesis, and its coriaceous, efarinose leaves. Molecular phylogenetic analysis based on the nuclear ribosomal internal transcribed spacer (nrITS) shows it to be closely related to P. tridentifera of subsect. Petiolares, and morphological comparisons support its recognition as a distinct new species. It resembles P. epilosa, P. tridentifera, and P. bergenioides but can be distinguished by the following characters: petiole 1.0–4.5 cm long; leaves efarinose and obovate to oblanceolate, with undulate-dentate margins; abaxial reticulate veins inconspicuous, lateral veins 5–7 pairs; calyx parted to one-third, with broadly triangular lobes; and corolla lobes truncate at the apex, dentate, and bearing an annulus. P. daguanensis is currently known only from the collection locality, and its conservation status is assessed as Data Deficient (DD) according to the IUCN Red List Categories and Criteria.

Key words: New species, phylogeny, Primula daguanensis, taxonomy

Primula daguanensis sp. nov. 
A. Plant. B. Scales. C. Leaves. D. Bract. E. Top view of the flower. F. Pin flowers (left) and thrum flower (right). G. Calyx of thrum flower. Drawn by Dr. Zhen-long Liang.

Primula daguanensis sp. nov. 
A. Plant. B. Rhizome. C, D. Scales. E. Leaves. F. Abaxial leaf surface showing glandular hairs on the midrib. G. Bract. H. Pin flowers. I. Thrum flower.

Photographed by W.B.Ju.

Primula daguanensis W.B.Ju, B.Xu & J.Ru, sp. nov.

 

Diagnosis. Primula daguanensis is morphologically similar to P. epilosa, P. tridentifera, and P. bergenioides in having a stout rhizome, membranous bud scales persistent at thesis, and a similar leaf outline (Fig. 3), but differs by a combination of characters: leaves efarinose, with undulate-dentate margins; adaxial surface smooth; abaxial reticulate veins inconspicuous; lateral veins 5–7 pairs; petiole 1.0–4.5 cm long; calyx parted to one-third of its length, with broadly triangular lobes; corolla bears an annulus, with lobes truncate at apex and dentate.

Habitat of Primula daguanensis sp. nov. (A–D).

Photographed by W.B.Ju.

Jian Ru, Xin-Yu Cheng, Bo Xu, Lian-Jin Guo and Wen-Bin Ju. 2026. Primula daguanensis (Primulaceae), A New Species from Yunnan, China. PhytoKeys. 270: 223-233. DOI: doi.org/10.3897/phytokeys.270.171019 [03 Feb 2026]

[Botany • 2026] Lysimachia yulongensis (Primulaceae) • A New Species in Lysimachia sect. Pumilae from Yunnan, China

 

Lysimachia yulongensis  Z.K.Wu & Ming Y.Sheng,

in Sheng, Yang, Shuai, Chen, Yin et Wu, 2026.

玉龙珍珠菜  ||  DOI: doi.org/10.3897/phytokeys.270.177773 

Abstract

Lysimachia yulongensis Z.K.Wu & Ming Y.Sheng, a new species of Primulaceae from Yunnan, China, is described and illustrated. Morphological evidence places L. yulongensis within Lysimachia sect. Pumilae, which is distinguished by dwarf plants with prostrate or nearly erect habits, few flowers clustered at the stem apex or solitary in the leaf axils near the apex, lanceolate sepals, elliptical and dorsifixed anthers and styles approximately as long as the stamens. The new species is characterised by a strongly stoloniferous growth habit, with creeping stems serving a vegetative function as stolon and terminating in leaf rosettes during fruiting; leaves that are narrowly elliptic to oblanceolate or spatulate; and flowers solitary in the leaf axils along obliquely ascending stems. Information on the distribution, phenology and conservation status of the new species is also provided.

Key words: Conservation status, diversity, nomenclature, taxonomy, yu long zhen zhu cai, Yunnan

Lysimachia yulongensis sp. nov.
 A, B. Habitat; C, D. Habit during flowering; E. Habit during fruiting with stolons; F. Leaves, the left three: lower surface, the right three: upper surface; G. Flower with calyx; H. Dissected corolla showing anthers and stigmas; I. Young fruits. Photographed by Zhikun Wu.

Lysimachia yulongensis Z.K.Wu & Ming Y.Sheng, sp. nov.

 

Diagnosis. The new species exhibits a floral morphology similar to that of Lysimachia prolifera and L. pumila, characterised by dwarf plants with creeping or nearly erect habits, few flowers clustered at the stem apex or solitary in leaf axils, lanceolate sepals, elliptical and dorsifixed anthers. However, it can be distinguished from these two species by several morphological features: a strongly stoloniferous growth habit, with creeping stems serving a vegetative function as stolon and terminating in a leaf rosette during fruiting; narrowly elliptic to oblanceolate or spatulate leaves; and flowers solitary in leaf axils along obliquely ascending stems.

Etymology. The specific epithet of the new species is taken from the Chinese Pinyin ”Yulong”, the name of the mountain in north-western Yunnan, China, where the type specimen was collected (Map 1).

Ming-yun Sheng, Wu-hai Yang, Tian Shuai, Yu-fan Chen, Li-juan Yin, Zhi-kun Wu. 2026. Lysimachia yulongensis (Primulaceae), A New Species in Lysimachia sect. Pumilae from Yunnan, China. PhytoKeys 270: 155-164. DOI: doi.org/10.3897/phytokeys.270.177773 

[Botany • 2026] Lysimachia longiracemosa (Primulaceae: Lysimachieae) • A New frutescent herb from Yunnan, China

Lysimachia longiracemosa  Y.H.Tan & Z.X.Ma,

in Ma, Quan et Tan. 2026. 

taiwania.ntu.edu.tw/abstract/2141

Abstract

Lysimachia longiracemosa, a new species of Primulaceae, is described from the margin of highland subtropical broad-leaved forests in southeastern Yunnan, China. Based on morphological evidence, the new species is placed in Lysimachia subgenus Idiophyton and diagnosed against its closest congener, L. nutantiflora. A revised key is also provided to distinguish L. longiracemosa from the related frutescent species with racemose inflorescences of the Lysimachia subgenus Idiophyton.

Keyword: Flora of China, Linnean, Lysimachia nutantiflora, Lysimachia subgenus Idiophyton, Yunnan

Habit of Lysimachia longiracemosa.
 A-B. Plant in the habitat, showing an erect subshrub habit. C. Plant with horizontally extending inflorescence.

A is vouched by Z.X.Ma 2466, and B-C are vouched by the type gathering Z.X.Ma 2408. 

Photographs: Z.X. Ma.

Inflorescence and flower of Lysimachia longiracemosa.
A-D. Racemes from multiple individuals were compared, noting their horizontally extending axis with pendulous flowers, which superficially resembles to a helicoid cymose inflorescence.
E-G. Flowers from different views. H. Flower dissected, note half of the calyx and corolla are artificially removed, displaying the robust anthers with minute filaments. I. Flower dissected, showing the glabrous pistil.

All images are vouched by the type gathering Z.X.Ma 2408. Photographs: Z.X. Ma.

Lysimachia longiracemosa Y.H.Tan & Z.X.Ma, sp. nov.  

Diagnosis: Lysimachia longiracemosa is morphologically similar to L. nutantiflora, but differs in having unwinged stems (vs winged stems), basally branched racemes that often develop the lowest branch into a paniculate unit and extend horizontally, smaller lanceolate bracts with the lowest 0.2–0.4 × 1.0–1.8 cm that abruptly reduce upward to nearly indistinct narrowly lanceolate to subulate bracts ca. 0.4 × 0.2 mm (vs. leaflike, elliptic to lanceolate, lowest bracts ca. 2.8 × 1.5 cm, gradually reduced upward to ca. 4 × 1.5 mm), and calyx medium green (vs. dark purple). 

 

Zhengxu Ma, Dongli Quan and Yun-Hong Tan. 2026. Lysimachia longiracemosa (Primulaceae: Lysimachieae), A New frutescent herb from Yunnan, China. Taiwania. 71(1); 32-36 DOI: 10.6165/tai.2026.71.32 [2026 January 04] 

https://taiwania.ntu.edu.tw/abstract/2141

[Botany • 2025] Primula lepcha (Primulaceae) • A New Species from Sikkim Himalaya, India

Primula lepcha  

in Lepcha, Chettri et Singh, 2025

DOI: doi.org/10.11646/phytotaxa.732.1.8

 

Abstract

Primula lepcha, a new species from Naga valley, North-Sikkim is described and illustrated. The new species closely resembles with P. bhutanica, P. whitei, and P. bracteosa, but it differs markedly in several floral and vegetative characters, including its efarinose nature of plant, the presence of both homostylous and heterostylous floral conditions, shorter scape, distinct bract shape and length, irregular calyx margins, ex-annulate corolla, and smaller stamens in both pin and thrum flowers. A detailed description, information on distribution and phenology, a comparative table, and colour photographs of its natural habitat are also provided.

Eastern Himalaya, sect. Petiolaris, North Sikkim, taxonomy, Eudicots

Primula lepcha sp. nov.

DHARMIT LEPCHA, ARUN CHETTRI and HARSH SINGH. 2025. A New Species of Primula (Primulaceae) from Sikkim Himalaya, India. Phytotaxa. 732(1); 83-90. DOI: doi.org/10.11646/phytotaxa.732.1.8 [2025-12-03]

  

[Botany • 2025] Lysimachia speciosa (Primulaceae) • A New Species from Central China

Lysimachia speciosa  Q.L.Gan, Z.Y.Li & S.Z.Xu,

in S.-Z. Xu, H. Xu, Gan et Li, 2025.  

DOI: doi.org/10.3897/phytokeys.263.139659

Abstract

A new species, Lysimachia speciosa, from western Hubei Province, Central China, is described and illustrated. The species is morphologically similar to L. deltoidea, especially var. cinerascens, but mainly differs from the latter by the recurved pubescence on the stem, petiole, and pedicel; the rhombic-ovate or ovate-lanceolate leaf blade; the longer petiole, calyx, corolla, stamens, and style; the erose lobes of the corolla; and the hairy ovary and capsule.

Key words: China, Hubei, Lysimachia, new species, taxonomy

Lysimachia speciosa sp. nov.
 A flowering plants B roots C stem and petioles D opposite leaves on lower stem E alternate leaves on mid- and distal stem F leaves G mid-vein and lateral veins H abaxial surface of leaf I adaxial view of corolla J dissected corolla showing stamens K pistil L capsule and persistent calyx M seeds.

 Lysimachia speciosa Q.L.Gan, Z.Y.Li & S.Z.Xu, sp. nov.

 

Diagnosis. Lysimachia speciosa is most similar to L. deltoidea var. cinerascens and L. grammica in having cespitose and ascending-erect stems, densely multicellular hairs on the plant, both opposite and alternate leaves, and solitary and axillary yellow flowers, but the new species can be easily distinguished from both by its recurved-pubescent indumentum on stems, petioles, and pedicels; shorter than subtending leaves pedicels; much longer calyx, corolla, filaments, and style; and pilose ovary and capsule. ...

Etymology. Lysimachia speciosa is a perennial herb with an attractive plant type and numerous cespitose, ascending-erect stems. Besides, the stem and petiole of the new species sometimes are flushed red. The flowers are yellow and showy. Thus, the specific epithet is derived from the aforementioned morphological characteristics.

 

 Song-Zhi Xu, Han Xu, Qi-Liang Gan and Zhen-Yu Li. 2025. Lysimachia speciosa (Primulaceae), A New Species from Central China. PhytoKeys. 263: 209-214. DOI: doi.org/10.3897/phytokeys.263.139659

[Botany • 2025] Lysimachia nanshanensis (Primulaceae) • A New Species from southwest Hunan, China

Lysimachia nanshanensis C.Xiong & S.R.Yi, 

in Xiong, Wang, Fu, Luo, Huang, Zhang et Yi, 2025.

南山落地梅  ||  DOI: doi.org/10.3897/phytokeys.262.153293 

Abstract

Lysimachia nanshanensis, a new species of Lysimachia ser. Paridiformes discovered in Nanshan National Park of southwest Hunan, China, is described and illustrated. Morphologically, this new species most closely resembles L. sciadantha in having whorled leaves and terminal umbels but differs from L. sciadantha by having terminal umbels without a peduncle, subpapery leaves with obvious black glandular punctation and striation, longer pedicels, and filaments that are nearly free. Results of molecular phylogenetic analysis, based on nuclear ribosomal internal transcribed spacer (nrITS) and two chloroplast DNA fragments (matK and rbcL) of 34 Lysimachia species, showed that L. nanshanensis is closely related to L. sciadantha. According to the IUCN Red List Categories and Criteria, the new species is assigned to the Vulnerable (VU D1) category.

Key words: Flora of Hunan, morphology, Nanshan National Park, taxonomy 

Lysimachia nanshanensis C.Xiong & S.R.Yi.
A, B. Habit; C. Terminal umbels; D. Flower (front view); E. Flower (back view); F. Flower buds; G. Flower (side view); H. Abaxial of calyx; I. Adaxial side of corolla; J. Stamens; K. Pistil.

 Lysimachia nanshanensis C.Xiong & S.R.Yi, sp. nov.

 

Diagnosis. Lysimachia nanshanensis belongs to ser. Paridiformes F.H.Chen & C.M.Hu (Chen and Hu 1979: 36) and is similar to L. sciadantha C.Y. Wu (Wu 1965: 53) by sharing some morphological characters, such as the middle and lower leaves bract-like and opposite, upper leaves clustering at the stem top, flowers densely on umbel. But differs from L. sciadantha in leaves 4–6 (vs. 4) in a whorl, subpapery (vs. stiffly papery), elliptic, ovate to obovate (vs. elliptic), apex obtuse to mucronate (vs. acute to short acuminate), umbels terminal without peduncle (vs. peduncle 1.8–6 cm long), pedicel 3–6 cm (vs. 1.2–2.5) long, filaments almost free (vs. base tube 3–3.5 mm).

Etymology. The specific epithet ‘nanshanensis’ refers to the type locality where the new species was found, Nanshan National Park, Southwest Hunan. The Chinese name is “南山落地梅 (nán shān luò dì méi)”.

 Chi Xiong, Xiao Wang, Xiao-Ying Fu, Kang Luo, Ya Huang, Hong-Jing Zhang and Si-Rong Yi. 2025. Lysimachia nanshanensis (Primulaceae), A New Species from southwest Hunan, China. PhytoKeys. 262: 191-202. DOI: doi.org/10.3897/phytokeys.262.153293 

[Botany • 2025] Primula indica (Primulaceae) • A New Species from Dibang Valley of Arunachal Pradesh, India

 Primula indica  

in Hajong et Bharali, 2025. 

DOI: doi.org/10.11646/phytotaxa.714.1.7 

 

Abstract

A new species Primula indica is found from Mayodiya paas area of Dibang Valley of Arunachal Pradesh is described and illustrated. It resembles to Primula vilmoriniana Petitm. which is belonging to the section Obconicolisteri but, differs in having small petiole, few flowered, calyx large, homostylous (vs. heterostylous), pedicel small, corolla lobe broadly obovate and quite large, corolla tube large, style large 8 mm (vs. small ca. 4 mm). The new species is preliminarily assigned as Data Deficient (DD) following the IUCN (2022) guidelines.

 Eastern Himalaya, New taxon, Primrose, Sect. Obconicolisteri, Taxonomy, Eudicots

Bipankar HAJONG and Pankaj BHARALI. 2025. Primula indica (Primulaceae), A New Species from Dibang Valley of Arunachal Pradesh, India. Phytotaxa. 714(1); 94-98. DOI: doi.org/10.11646/phytotaxa.714.1.7 [2025-08-06]

[Botany • 2025] Primula jiangyouensis (Primulaceae) • A New Species from Sichuan, China

  

Primula jiangyouensis J.L.Gu & Z.K.Wu,

in Gu, Wang, Lin, Jiang, Shuai et Wu, 2025. 

DOI: doi.org/10.3897/phytokeys.260.158039 

Abstract

Primula jiangyouensis J.L.Gu & Z.K.Wu, a new species of Primulaceae from Sichuan, China, is described and illustrated. Morphological evidence supports P. jiangyouensis as a member of P. sect. Auganthus, which is characterized by shallowly to deeply lobed leaves covered with hairs, and distinctively broad and flat-bottomed calyx. The new species is characterized by its branched and stout rhizomes usually up to 40 cm, yellow corollas with a distinct fan-shaped reddish-brown blotch at the base of lobes, and short glandular hair on aboveground parts. The distribution, morphological comparison with close related species and conservation status of the new species, as well as a key to the species of Primula sect. Auganthus, are also provided.

Key words: Conservation status, diversity, jiang you bao chun, taxonomy

Primula jiangyouensis sp. nov.
 A. Habit; B. Leaves, left: upper surface, right: lower surface; C. Flower, left: pin flower, right: thrum flower; D. Calyx and young fruit.

Drawn by Ms. Xiang-Li Wu.

Holotype of Primula jiangyouensis sp. nov. (GJL384, KUN!)

Primula jiangyouensis sp. nov.
A. Habitat; B, C. Flowering plants; D. Plant with roots and rhizomes; E. Leaves, left: upper surface, right: lower surface; F. Infructescences; G. Bracts and pedicels; H. Flower, lateral view; I. Longitudinal section of pin flower (left) and thrum flower (right); J. Calyx and young fruit; K. Longitudinal section of ovary; L. Ripe seed.

Photographed by J.L.Gu and Z.K.Wu.

 Primula jiangyouensis J.L.Gu & Z.K.Wu, sp. nov.

 

Diagnosis. The new species is most similar to P. sinensis, P. rupestris, and P. xingshanensis, sharing hairs that covered the leaves and stems, lobed leaf blade, distinctly petiole and distinctively broad and flat-bottomed calyx. However, the new species is distinguished from the latter three mainly by its branched and stout rhizomes usually up to 40 cm, yellow corollas with a distinct fan-shaped reddish-brown blotch at the base of lobes, and short glandular hair on aboveground parts (Figs 1–4). The main morphological distinctions between P. jiangyouensis, P. sinensis, P. rupestris, and P. xingshanensis are summarized in Table 1.

...

 Jiu-Lin Gu, Hua-Dong Wang, Hong-Qiang Lin, Xiao-Qi Jiang, Tian Shuai and Zhi-Kun Wu. 2025. Primula jiangyouensis (Primulaceae), A New Species of Primula sect. Auganthus from Sichuan, China. PhytoKeys. 260: 25-35. DOI: doi.org/10.3897/phytokeys.260.158039 

[Botany • 2025] Lysimachia brevicaulis (Primulaceae) • A New Species from Limestone Karst of Northern Laos

Lysimachia brevicaulis  Y.H. Tan & D.L. Quan, 

in Quan, Yang et Tan, 2025.

DOI: doi.org/10.5735/085.062.0112 

 Researchgate.net/publication/390049986

 Abstract 

Lysimachia brevicaulis Y.H. Tan & D.L. Quan (Primulaceae) is described and illustrated as a new species from a limestone karst in Oudomxay Province, Laos. It is tentatively placed in the subgenus Idiophyton. The new species is morphologically close to L. verbascifolia but can be distinguished from it by its underdeveloped stem, smaller leaf blades, solitary flowers, villous calyx, abaxially reddish brown and puberulent corolla, shorter anthers and styles, and green fruits.

Lysimachia brevicaulis.
— A: Habit (left, isotype; right, holotype). — B: Flowering plant. — C: Lateral viewwith rhizome. — D: Fruits (holotype). — E, G and H: Flower. — F: Pistil. — I: Leaves (left, adaxial surface; right, abaxial surface). — J: Petals detached. — K: Sepals detached. — L: Stamens.

A and D photographed at the type locality on 19 November 2022; others photographed from paratype (HITBC0123823) in Xishuangbanna Tropical Botanical Garden on 14 June 2023. 

Lysimachia brevicaulis Y.H. Tan & D.L. Quan sp. nov.

Etymology: The specific epithet brevicaulis refers to the short stem, one of the key characteristics of the new species.

 

Dong-Li Quan, Bin Yang and Yun-Hong Tan. 2025. Lysimachia brevicaulis (Primulaceae), A New Species from Limestone Karst of Northern Laos. Annales Botanici Fennici. 62(1); 75-80. DOI: doi.org/10.5735/085.062.0112 (10 March 2025)  

 Researchgate.net/publication/390049986_Lysimachia_brevicaulis_a_new_species_from_limestone_karst_of_northern_Laos

https://english.cas.cn/newsroom/research_news/life/202503/t20250321_908498.shtml