[Botany • 2026] Gastrodia keyiensis (Orchidaceae: Gastrodieae) • A New holomycotrophic Species from Arunachal Pradesh, Eastern Himalaya, India

  

Gastrodia keyiensis M.Khanal, D.Borah & Dev.Kumar, 

in Khanal, Borah, Sarkar, Gap, Rai et Kumar, 2026.

DOI: doi.org/10.11646/phytotaxa.773.3.7  

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Abstract

Gastrodia keyiensis M.Khanal, D.Borah & Dev.Kumar sp. nov. is described from Keyi Panyor District, Arunachal Pradesh, northeastern India. The new species is morphologically allied to G. putaoensis but differs in having a broadly obovate basal part of the labellum with 6–7 prominent longitudinally thickened structures, and a distinct, thick, strongly incurved, narrowly oblong-ligulate, yellow apical part that is minutely papillate, with the apex rounded to obtuse (vs. an elliptic basal part with 3–5 parallel thickened lines, and a narrower apical part densely covered with yellow hairs, with the apex obtuse and densely covered with red papillae). A detailed morphological description, diagnosis, photographic illustrations, notes on distribution, habitat, phenology, and conservation status, together with comparisons with morphologically allied species, are provided to facilitate its identification.

Monocots, Ghost orchid, Mycoheterotroph, New to Science, Orchid, Taxonomy

Gastrodia keyiensis M.Khanal, D.Borah & Dev.Kumar sp. nov.

MADHUSUDHAN KHANAL, DIPANKAR BORAH, SHUVADIP SARKAR, NEELAM GAP, SANTOSH KUMAR RAI and DEVENDRA KUMAR. 2026. Gastrodia keyiensis (Orchidaceae: Gastrodieae), A New holomycotrophic Species from Arunachal Pradesh, Eastern Himalaya, India.  Phytotaxa. 773(3); 289-295. DOI: doi.org/10.11646/phytotaxa.773.3.7 [2026-09-09]

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[Botany • 2026] Sedum guniuensis (Crassulaceae) • A New Species from Anhui, China

 

Sedum guniuensis Kun Liu, H. J. Ma & J.W. Shao, 

in Wang, Ma, Fang, Ding, Ni, Zhang, Zou, Shao, Li, Liu et Ai, 2026. 

牯牛景天  |  DOI: doi.org/10.1002/ece3.74120

 

ABSTRACT

A new species of Sedum (Crassulaceae), Sedum guniuensis from the Guniujiang Mountains in southern Anhui, China, is described and illustrated. This new species is similar to S. emarginatum, but can be clearly distinguished by its creeping growth habit and smaller cordate leaves. Additionally, complete chloroplast genomes from six populations of S. guniuensis provide strong molecular evidence for its taxonomic separation from S. emarginatum.

Sedum guniuensis Kun Liu, H. J. Ma & J.W. Shao, sp. nov.
 (A) habitat, (B) habit winter, (C) habit spring, (D) flowers, (E) plants.

 All are photographed by Kun Liu or Haijun Ma.

Sedum guniuensis Kun Liu, H. J. Ma & J.W. Shao, sp. nov. (Figures 4, 5).

Diagnosis: Sedum guniuensis (Figures 4 and 5) is morphologically similar to S. emarginatum, but differs in prostrate stems, cordate smaller leaves (0.5–1.2 × 0.4–1.0 cm vs. 1–2.5 × 0.5–1.2 cm), linear-obovate sepals (2–5 × 0.7–2 mm), and diminutive petals (6–8 × 1.5–2 mm) (Table 2). In sympatry (Figure 4A,B), S. guniuensis has creeping stems and smaller leaves than S. emarginatum.

Etymology: The epithet “guniuensis” is derived from the type locality, Guniujiang mountains, Shitai County, Anhui Province, China. 

The Chinese name given is “Gǔ Niú Jǐng Tiān” (牯牛景天).

Sedum guniuensis (B, D, E, G, I, K) and S. emarginatum (A, C, F, H, J, L),
(A, B) comparison of both species co-occurring in sympatric communities in the wild, (C, D) plants, (E, F) cauline leaves, (G, H) leaf, (I, J) flowers, (K, L) fruits.

All are photographed by Kun Liu or Haijun Ma.

 

Wan-Zeng Wang, Hai-Jun Ma, Hong-Ming Fang, Bai-Lin Ding, Wei-Yong Ni, Si-Yu Zhang, Shi-Hui Zou, Jian-Wen Shao, Nai-Wei Li, Kun Liu and Li-Jiao Ai. 2026. Sedum guniuensis, A New Species of Sedum (Crassulaceae) from Anhui, China. Ecology and Evolution. DOI: doi.org/10.1002/ece3.74120 [29 July 2026] 

[Botany • 2026] Hydrangea medogensis (Hydrangeaceae) • A New Species from Xizang (Tibet), China

 

Hydrangea medogensis X.Z.Lan, W.L.Zheng & W.Q.He, 

in He, Zheng, F.-Y. Zhao, Yin, Li, K.-H. Zhao, Zhang, Liao et Lan, 2026.

墨脱绣球  |  DOI: doi.org/10.3897/phytokeys.279.203326 

Abstract

Based on field surveys, examination of herbarium specimens, and molecular phylogenetic analyses, the present study described a new species, Hydrangea medogensis sp. nov. (Hydrangeaceae), from Medog County, Xizang Autonomous Region, China. Phylogenetic analyses indicated that H. medogensis was placed in Clade 1 as a distinct lineage, sister to the remainder of the clade. Morphologically, the new species is most similar to H. stylosa but can be distinguished by the following key characteristics: fertile flowers with a globose calyx tube constricted at the mouth; calyx teeth triangular, occasionally oblong-ovate, 0.6–1 mm long; adaxial leaf surface covered with two types of soft hairs (long and short); ovary more than 4/5 inferior, nearly completely inferior; and seeds with a very narrow wing around the margin. The taxonomic status of the new species was established based on integrated morphological and molecular evidence.

Key words: Hydrangea, morphological analysis, new species, phylogenetic analysis

Hydrangea medogensis X.Z.Lan, W.L.Zheng & W.Q.He.
A. Habit; B. Fruiting branch; C. Adaxial surface of leaf; D. Abaxial surface of leaf; E. Flower bud; F. Flower; G. Fruit; H. Seed (drawing by Wenqi He).

Hydrangea medogensis X.Z.Lan, W.L.Zheng & W.Q.He. 
A. Habitat; B. Flowering branch; C. Sterile flowers and young fruits; D. Branchlet; E. Fruiting branch.

Hydrangea medogensis X.Z.Lan, W.L.Zheng & W.Q.He, sp. nov.

Diagnosis. Hydrangea medogensis is morphologically similar to H. stylosa, but differs in having ovaries more than 4/5 inferior (vs. ca. 2/3 inferior), leaves with adaxial surface covered with long and short hairs (vs. nearly glabrous or glabrous on both surfaces), fertile flowers with calyx tube subglobose, calyx opening constricted, calyx teeth triangular, occasionally oblong-ovate, 0.6–1 mm long (vs. calyx tube campanulate, calyx opening tubular, calyx teeth ovate or suboblong, 1–1.5 mm long), and seeds narrowly winged around margin (vs. minutely winged at one or both ends).

Etymology. The epithet indicates the type locality, i.e., Medog area, Xizang, China.

Vernacular name. mò tuō xiù qiú (Chinese pronunciation); 

墨脱绣球 (Chinese name).

 Wen-Qi He, Wei-Lie Zheng, Fang-Yu Zhao, Kai-Xin Yin, Lian-Qiang Li, Kai-Hui Zhao, Fang-yuan Zhang, Zhi-hua Liao and Xiao-Zhong Lan. 2026. Hydrangea medogensis (Hydrangeaceae), A New Species from Xizang (Tibet), China. PhytoKeys. 279: 51-68. DOI: doi.org/10.3897/phytokeys.279.203326 [10 Sep 2026]

[Botany • 2026] Begonia salog (Begoniaceae, sect. Baryandra) • A New endemic Species from southeastern Luzon, Philippines

 

Begonia salog Dela Cruz, Bucay, Corre, & Valiente, 

in Dela Cruz, Bucay, Corre, Valiente, Tandang et Chung, 2026. 

 taiwania.ntu.edu.tw/abstract/2212 

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Abstract

Begonia salog, a member of section Baryandra, is characterized by rhizomatous growth, axillary protandrous inflorescences with boat-shaped bracts, and ovaries with bifid placentae. While sharing glandular hairs on the inflorescence with B. caramoanensis, it is distinguished by puberulent petioles (vs. tomentose), broadly serrated, non-ciliate leaf margins (vs. shallowly undulate and ciliate), a glabrous abaxial leaf surface (vs. pilose), glabrous bracts (vs. glandular-hairy), and a glabrous ovary (vs. glandular-hairy). Begonia salog is described here as a new species from the karst landscapes of southeastern Luzon, Philippines, with notes on its ecology and habitat, and a preliminary IUCN-based conservation assessment.

Keyword: Begonia caramoanensis, biodiversity conservation, comparative morphology, plant endemism, species delimitation

Begonia salog Dela Cruz, Bucay, Corre, & Valiente.
A. Habitat and habit; B. Rhizome, showing stipules and petiole base; C. Petiole showing vestiture; D. Adaxial leaf lamina; E. Abaxial leaf lamina; F. Staminate flower, face view; G. Pistillate flower, face view; H. Staminate flower, side view; I. Pistillate flower, side view; J. Inflorescence; K. Immature staminate flower showing the bracts and vestiture; L. Dissected stipule; M. Capsule; N. Ovary cross-section.

All from C.J.P. Dela Cruz 0016 (Holotype, PNH)

Begonia salog Dela Cruz, Bucay, Corre, & Valiente, sp nov.

 (§ Baryandra) 

Diagnosis: Begonia salog is characterized by its rhizomatous growth habit, axillary protandrous inflorescences with boat-shaped bracts, and an ovary exhibiting bifid placentation. Begonia salog is morphologically similar to B. caramoanensis (Rubite et al., 2020) in possessing glandular hairs on the inflorescences, but it can be distinguished by several key morphological traits. These include its puberulent (vs. tomentose) petioles; broadly serrate, non-ciliate leaf margins (vs. shallowly undulate to almost entire and ciliate); a glabrous abaxial lamina (vs. pilose with lightgreen to maroon hispid hairs denser along the veins) abaxial leaf lamina; glabrous (vs. glandular-hairy) bracts; and a glabrous (vs. glandular-hairy) ovary. Additional diagnostic differences between the two taxa are detailed in Table 1

Etymology: The epithet salog comes from the Bicolano word meaning ‘river,’ referring to the habitat where the plant was first documented.

Cyrus Job P. Dela Cruz, Mark Angelo C. Bucay, Karen B. Corre, Judy Ann V. Valiente, Danilo N. Tandang and Kuo-Fang Chung. 2026. Begonia salog (Begoniaceae, section Baryandra), A New endemic Species from southeastern Luzon, Philippines.  Taiwania. 71(4); 632-637 DOI: 10.6165/tai.2026.71.632 [10 August 2026] 

 taiwania.ntu.edu.tw/abstract/2212 

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[Botany • 2026] Begonia andariasii (Begoniaceae) • A New Species from Mamasa, Sulawesi

 

Begonia andariasii  Mustaqim & Ardi,

in Mustaqim et Ardi, 2026.  

 taiwania.ntu.edu.tw/abstract/2213 

Abstract

Begonia andariasii (Begoniaceae) is described as a new species endemic to Mamasa Regency, Sulawesi Barat Province, Indonesia. The species is provisionally assigned as Critically Endangered (CR). Detailed descriptions, distribution, photographs, and discussions are given.

Keyword: Begonia ranoposoensis, Cucurbitales, herbs, Indonesia, taxonomy, Wallacea

Morphology of Begonia andariasii.
A. Wild plants. B. Stipule. C. Leaf, adaxial. D. Leaf, abaxial. E. Inflorescence. F. Male flower, lateral view. G. Male flower, frontal view. H. Stamens. I. Female flowers. J. Female flower, frontal view. K. Style and stigmas. L. Cross-section of ovary, also showing placentae. M. Capsules.

Photographs: A–E, F–G by Andarias Sambokaraeng and H–M by Wendy A. Mustaqim,

Begonia andariasii Mustaqim & Ardi, sp. nov. 

Diagnosis: Begonia andariasii is similar to B. ranoposoensis Saleh, Bandjolu & Ardi but differs in being consistently erect (vs. semi-erect to creeping), longer stipules (14–16 vs. 6‒11 mm long), male inflorescences consisting of 1–2 compressed monochasia, with up to 7 flowers (vs. a thyrse composed of up to 18 partial inflorescences, each compressed-subumbellate and bearing 4–12 flowers), male flowers with more anthers (43–47 vs. 21–29), longer female inflorescence peduncle (9–36 mm vs. 1–3 mm), longer fruiting pedicels (5–6 mm vs. up to 4 mm) and a longer capsule (20–22 mm vs. 9–17 mm). 

Etymology: Named in honour of Andarias Sambokaraeng, also known as Andre, a local plant enthusiast and conservationist whose contributions have revealed the plant diversity of Mamasa to the scientific community and the public.

 Wendy A. Mustaqim and Wisnu H. Ardi. 2026. Begonia andariasii (Begoniaceae), A New Species from Mamasa, Sulawesi.  Taiwania. 71(4); 638-642 DOI: 10.6165/tai.2026.71.638 [11 August 2026] 

  taiwania.ntu.edu.tw/abstract/2213

[Botany • 2026] Begonia neelamorum (Begoniaceae, sect. Monophyllon) • A remarkable New Species from Arunachal Pradesh, Northeast India

 

 Begonia neelamorum  D.Borah & M.Khanal,

in Borah, Khanal, Taram et Gap, 2026.

 taiwania.ntu.edu.tw/abstract/2210 

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Abstract

Begonia neelamorum D.Borah & M.Khanal, sect. Monophyllon, is described as a new species from Arunachal Pradesh, India. It closely resembles B. prolifera A.DC. in having a globose tuber, a single, sessile, basifixed leaf with a uniformly light-green lamina, an inflorescence which arises from the base of the sessile leaf blade, and white staminate and pistillate flowers, but differs in its glandular-hispid indumentum, terete stem, ovate lamina with double-serrate margins, a dichasial cyme and shorter styles. The species description is accompanied by illustrations and photographs, and information is provided on its distribution, phenology, ecology, preliminary conservation assessment and similarity to other species.

Keyword: Arunachal Pradesh, Begonia kayinensis, Begonia oyuniae, Begonia prolifera, Himalaya, Monophyllon, new species

 Begonia neelamorum. A. Habit; B. Flowering branch; C. Inflorescence; D-E. Male flowers, front and back views; F. Female flower, side view, G. Female flower, front view; H. Styles; I. Androecium.

(D.Borah, M.Khanal and G.Neelam 2267)

 Begonia neelamorum. A-C. Habitat

Begonia neelamorum D.Borah & M.Khanal, sp. nov. 

sect. Monophyllon

 Diagnosis: Begonia neelamorum D.Borah & M.Khanal is most similar to B. prolifera A.DC. in having a globose tuber, a single, sessile, basifixed leaf with a uniformly light-green lamina, an inflorescence from the base of the lamina and a symmetric or subsymmetric, cordate leaf bases, but differs in its glandular-hispid indumentum (vs. glabrous to subglabrous), stem terete (vs. adaxially grooved), ovate lamina with double-serrate margins (vs. orbicular-cordate lamina with dentate to slightly incised margins, sometimes tuberculate at the edges), dichasial cymes (vs. thyrsoid cyme), shorter styles, 1 mm long (vs. 3 mm)

Etymology: The specific epithet honours the Neelam clan of the Nyishi tribe of Arunachal Pradesh, who assisted in the collection of the species during a particularly treacherous expedition. Neelam is also the name of the village inhabited by members of the clan and is among the nearest villages to the type locality from which the species was collected. 

Vernacular name: Kobiirhopu Baabrai (Nyishi) 

 Dipankar Borah, Madhusudhan Khanal, Momang Taram and Neelam Gap. 2026. Begonia neelamorum (Begoniaceae sect. Monophyllon), A remarkable New Species from Arunachal Pradesh, Northeast India. Taiwania. 71(4); 617-620. DOI: 10.6165/tai.2026.71.617 [05 August 2026]

 taiwania.ntu.edu.tw/abstract/2210 

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[Botany • 2026] Raphiocarpus flavus (Gesneriaceae) • A New Species from the limestone karst areas, Northern Vietnam

Raphiocarpus flavus Y.G.Wei, F.Wen, Z.B.Xin, & T.V.Do, 

in Xin, Wei, Maciejewski, Fu, Qian, Wen et Do, 2026. 

黃花漏斗苣苔  | taiwania.ntu.edu.tw/abstract/2207 

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Abstract

Raphiocarpus flavus Y.G.Wei, F.Wen, Z.B.Xin, & T.V.Do, a new species from Ninh Bình Province and Hanoi City, Vietnam, is described and illustrated. This species is morphologically similar to R. asper (Drake) B.L.Burtt but can be distinguished by its stem height, absence of scabrous punctations, internode length, 3-whorled leaves, leaf size and indumentum, axillary inflorescences, corolla length, color and indumentum, and 2-lipped corolla limb. According to the IUCN Red List Categories and Criteria, this new species has been provisionally assessed as Least Concern (LC).

Keyword: Cuc Phuong National Park, Flora of Vietnam, Huong Pagoda, new taxon, Raphiocarpus asper

Raphiocarpus flavus Y.G.Wei, F.Wen, Z.B.Xin, & T.V.Do, sp. nov.
A–C. Habitat; D. Adaxial leaf blade; E. Abaxial leaf blade; F. Cymes; G. Bracts and bracteoles; H. Lateral view of the corolla; I. Top view of the corolla; J. Sepals; K. Pistil and disc; L. Opened corolla with stamens and staminode

(Photographed by Fang Wen, Plate arranged by Zi-Bing Xin).

Raphiocarpus flavus Y.G.Wei, F.Wen, Z.B.Xin, & T.V.Do, sp. nov. 

黃花漏斗苣苔  

Diagnosis: Raphiocarpus flavus is morphologically similar to R. asper (Drake) B.L.Burtt, but can be easily distinguished by its stems 1–1.8 m (vs. 0.4–0.5 m), scabrous punctations absent (vs. present), internodes 10– 12 cm (vs. 5–6 cm), 3-whorled leaves (vs. opposite), leaves almost glabrous (vs. densely appressed puberulent to pubescent), inflorescences axillary (vs. terminal), corolla glabrous (vs. densely pubescent), 2-lipped limb (vs. with 5 nearly equal lobes).

Etymology: The specific epithet "flavus" is derived from its unique yellowish corolla.

 

Zi-Bing Xin, Yi-Gang Wei, Stephen Maciejewski, Jia-Xin Fu, Xiao-Mao Qian, Fang Wen and Truong Van Do. 2026. Raphiocarpus flavus (Gesneriaceae), A New Species from the limestone karst areas, Northern Vietnam. Taiwania. 71(3); 592-596 DOI: 10.6165/tai.2026.71.592 [2026 July 11]

https://taiwania.ntu.edu.tw/abstract/2207 

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[Botany • 2026] Typhonium gonos • A New Species from Northern Thailand and a new synonym [Studies on Typhonium (Araceae: Areae) of Thailand VII]

 

 Typhonium gonos K.Z.Hein & Saensouk, 

in Hein, P. Saensouk, Rakarcha, Warseno et S. Saensouk, 2026.

 taiwania.ntu.edu.tw/abstract/2214 

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Abstract

Typhonium gonos K.Z.Hein & Saensouk is described and illustrated as a species new to science, restricted to Permian limestone in Phrae Province, Northern Thailand, and compared with its probable closest congener, T. sinhabaedyae Hett. & A.Galloway from Tak Province. In addition, T. pusillum Sookch., V.D.Nguyen & Hett. is newly synonymized under T. gagnepainii J.Murata & Sookch.

Keyword: Aroideae, heterotypic synonym, Indochina, Northern Thailand, permian limestone, plant taxonomy

 Typhonium gonos sp. nov.
 A. Flowering individuals in habitat. B. Plants in habitat showing leaf blade variation within a population.

Photos by T. Uttarapong.

 Typhonium gonos sp. nov.
A. Excavated flowering plant. B. Leaf blade showing abaxial surface. C. Side view of anthomorph at pistillate anthesis. D. Front view of anthomorph at pistillate anthesis. E. Side view of anthomorph at pistillate anthesis (nearside spathe artificially removed to expose the spadix).

Scale bars: A–B.=3 cm, C–E.=5 mm. Photos by T. Sangchun and K.Z. Hein.

Detail of the spadices, each showing pistillate zone, sterile interstice, staminate zone and base of appendix (the near side of the spathe artificially removed).
A. Typhonium gonos sp. nov. B. T. sinhabaedyae.

Scale bars: A-B = 5 mm. Photos by T. Sangchun and K.Z. Hein.

Typhonium gonos K.Z.Hein & Saensouk, sp. nov. 

 Type: THAILAND. Northern: Phrae Province, Long District, Ta Pha Mok Subdistrict, elev. ca. 260 m, 11 May 2026, T. Uttarapong 001 (holotype: ! [spirit collection]; isotype: VMSU! [spirit collection]). 

Diagnosis: Typhonium gonos most closely resembles T. sinhabaedyae Hett. & A.Galloway (Fig. 3B) in its anthomorph, but differs in having a sterile interstice bearing distantly arranged staminodes only in the middle portion, with the lower and upper portions naked (vs. tightly arranged staminodes restricted to the lower part of the sterile interstice immediately above the pistillate zone in T. sinhabaedyae), and a stigma narrower than the ovary narrower than the ovary (vs. wider than the ovary in T. sinhabaedyae).

Etymology: The specific epithet gonos is derived from the Greek γόνος (gonos), meaning seed, semen, or seminal fluid, in allusion to the odour reminiscent of seminal fluid emitted by the anthomorph during pistillate anthesis, and is used as a noun in apposition. 

Details of the spadices of Typhonium gagnepainii showing variation in the shape of the staminodes (A.–C. All specimens originally collected from the same locality).

Scale bars: A-C = 5 mm. Photos by K.Z. Hein.

Khant Zaw Hein, Piyaporn Saensouk, Sarayut Rakarcha, Tri Warseno and Surapon Saensouk. 2026. Studies on Typhonium (Araceae — Areae) of Thailand VII: A New Species and a new synonym.  Taiwania. 71(4); 643-648. DOI: 10.6165/tai.2026.71.643 [12 August 2026]

 taiwania.ntu.edu.tw/abstract/2214

  Researchgate.net/publication/412535832_Studies_on_Typhonium_of_Thailand_VII_A_new_species 

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[Botany • 2026] Typhonium mukdahanense • A New Species (Araceae) from Northeastern Thailand

 

Typhonium mukdahanense Chatan & Promprom,

in Promprom, Munglue, Phannasri et Chatan, 2026. 

DOI: doi.org/10.3390/life1608

Abstract

Typhonium is one of the most species-rich genera of Araceae in tropical Asia, with north-eastern Thailand representing an important but still incompletely documented area of diversity. During botanical surveys in northeastern Thailand, an unusual population of Typhonium was discovered in mixed deciduous forest and dry evergreen forest at 300–400 m elevation. Detailed morphological study of living plants and herbarium specimens, together with comparisons with relevant protologues, regional floras, and recently described species, confirmed that this population represents a species new to science. It is here described as Typhonium mukdahanense Chatan & Promprom, sp. nov. The new species is morphologically most similar to T. fornicatum, but differs by its taller habit, larger hastate to trisect leaf blades, more numerous primary lateral veins, larger and nearly symmetrical spathe tube, triangular reflexed spathe limb, dark red stigma with a cream-colored depressed center, sterile interstice bearing 10–14 staminodes arranged in two whorls, slightly curved and not spreading–declinate appendix, and pyriform mottled berries. It also differs from T. acetosella by its broader leaf blades, reflexed triangular spathe limb, dark red stigma, and pyriform fruits. The new species is currently known only from the type locality and is therefore provisionally assessed as Critically Endangered (CR) according to the IUCN Red List Categories and Criteria. A detailed description, diagnosis, information on distribution, habitat, phenology, conservation status, and an identification key to morphologically similar species are provided.

Keywords: aroid; Indochina; nomenclature; plant diversity

Typhonium mukdahanense.
 (A, B) Habitat and habit under natural field conditions; (C–F) Habit of cultivated plants; (G) Whole plant.

 Typhonium mukdahanense.
 (A) Tuber and roots; (B,E) Leaf blades (adaxial surfaces); (C,D,F) Leaf blades (abaxial surfaces).

 Typhonium mukdahanense.
 (A) Basal portion of the spadix showing the pistillate zone, staminodes, and sterile interstice; (B) Appendix; (C) Enlarged view of the pistillate zone, staminodes, and sterile interstice; (D) Pistils; (E) Enlarged view of a pistil; (F) Staminate zone; (G,H) Stamens in top and lateral views, respectively.

 Typhonium mukdahanense.
(A, B) Naturally damaged infructescence in the field;
(C, D) Infructescence before and after longitudinal sectioning.

Typhonium mukdahanense Chatan & Promprom, sp. nov.  

 Diagnosis: Typhonium mukdahanense Chatan & Promprom, sp. nov., is most similar to Typhonium fornicatum in its clustered leaves and small inflorescences, but differs by its taller habit (up to 18 cm vs. up to 10 cm tall); larger hastate to trisect leaf blades (8–12 × 6.5–9.5 cm vs. 5.0–6.5 × 2.6–2.8 cm); more numerous primary lateral veins (5–8 vs. 3–4 per side of the midrib); larger and nearly symmetrical spathe tube (12–15 mm long vs. 8–9 mm long); triangular reflexed spathe limb with the adaxial surface facing upwards (vs. lanceolate and fornicate); longer spadix (9.5–10 cm vs. ca. 7 cm long); stigma dark red with a cream-colored depressed center (vs. white); sterile interstice bearing 10–14 staminodes arranged in two whorls (vs. only three staminodes arranged in single whorl); appendix slightly curved and not spreading-declinate (vs. spreading-declinate); and pyriform berries irregularly mottled or speckled with reddish- to purplish-brown markings (vs. clavate berries with darker brown mottling). A detailed morphological comparison between the new species and its most similar species is provided in Table 1.

...

Etymology: The specific epithet refers to its type locality, Mukdahan Province, in northeastern Thailand.

 Wilawan Promprom, Phukphon Munglue, Chuthep Phannasri and Wannachai Chatan. 2026. Discovery of Typhonium mukdahanense (Araceae), a New Species from Northeastern Thailand. Life. 16(8), 1376. DOI: doi.org/10.3390/life16081376 [20 August 2026]

[Botany • 2026] Begonia trichopetiolata (Begoniaceae, sect. Baryandra) • A New Species from Bukidnon, Central Mindanao, the Philippines

 

Begonia trichopetiolata  Medecilo, Rubite & Caballes, 

in Medecilo-Guiang, Rubite, Vallejos, Atay et Caballes, 2026. 

DOI: doi.org/10.11646/phytotaxa.773.2.5  

 facebook.com: Ken Bien Mar CABALLES

Illustrated by Julieferd Torres facebook.com: Ferd Torres

 Researchgate.net/publication/414085231

Abstract

Begonia trichopetiolata from Bukidnon, Central Mindanao, is described and illustrated as a new species endemic to the Philippines. It closely resembles B. mabuhayensis from Surigao del Sur, Eastern Mindanao; however, it differs in having triangular, keeled stipules, densely villose petioles, leaves with 10 primary veins and non-repand margin, shorter inflorescences and primary peduncles, larger bracts, and smaller capsules. Following IUCN Red List criteria, we propose B. trichopetiolata as Critically Endangered (CR). This discovery raises the total number of Begonia species in Bukidnon to 14 and marks the third member of Begonia section Baryandra recorded in the province.

Eudicots, Critically endangered, karst forest, limestone, Mindanao, Philippine endemic

Begonia trichopetiolata.
A. Habit; B. Detail of petiole; C. Leaf abaxial surface; D. Staminate flower bud; E. Staminate flowerfront view; F. Staminate flower lateral view; G. Stamens; H. Anther and filament; I. Pistillate flower front view; J. Pistillate flower lateralview; K. Stigma and style; L. Lateral view of the stipule; M. Anterior view of the stipule; N. Cross section of the ovary; O. Capsule.

Illustrated by Julieferd Torres. 

Begonia trichopetiolata Medecilo, Rubite & Caballes sp. nov. 

§ Baryandra

Etymology:—The specific epithet trichopetiolata refers to the petioles entirely and densely covered with long white hairs.

Maria Melanie P. MEDECILO-GUIANG, Rosario R. RUBITE, Christian Jay S. VALLEJOS, Jasten Kerk A. ATAY and Ken Bien Mar L. CABALLES. 2026. Begonia trichopetiolata (section Baryandra, Begoniaceae), A New Species from Bukidnon, Central Mindanao, the Philippines.  Phytotaxa. 773(2); 162-170. DOI: doi.org/10.11646/phytotaxa.773.2.5 [2026-09-08]

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 Researchgate.net/publication/414085231_Begonia_trichopetiolata_a_new_species_from_Central_Mindanao_the_Philippines

[Botany • 2026] Zingiber latibracteum (Zingiberaceae) • A New Species from Northern Vietnam

Zingiber latibracteum X.D.Ma, J.M.Lu & J.Y.Shen,

in Ma, Lu et Shen, 2026. 

taiwania.ntu.edu.tw/abstract/2194 

Abstract

Zingiber latibracteum X.D.Ma, J.M.Lu & J.Y.Shen, currently assigned to Zingiber sect. Dymczewiczia, is newly described from Ha Giang Province, Northern Vietnam. It resembles Z. calcicola Y.H.Tan & H.B.Ding, Z. mellis Škorničk., H.Đ.Trần & Šída f. and Z. plicatum Škorničk. & Q.B.Nguyễn in having terminal inflorescences but is clearly distinguished by its glabrous ligules with rounded apex, shorter petiole, broadly elliptic bracts and smaller lateral staminodes. A comparison table of related species is provided.

Keyword: distribution, Dymczewiczia, habitat, morphology, Vietnam, Zingiber calcicola, Zingiber mellis, Zingiber plicatum.

Zingiber latibracteum.
 A. Plants. B. Leaf, adaxial view. C. Leaf, abaxial view. D–E. Adaxial and abaxial leaf surfaces. F. Leafy shoot. G. Inflorescence. H. Bract, adaxial view. I. Bract, abaxial view. J. Flowers and bract, side view. K–L. Flowers, side view. M. Flower, front view. N. Dorsal corolla lobe, adaxial view. O–P. Lateral corolla lobes, adaxial view. Q. Labellum and lateral staminodes, adaxial view. R. Labellum and lateral staminodes, abaxial view. S. Ovary, floral tube, stamen and stigma, side view. T. Ovary, style and epigynous glands, side view. U. Longitudinal section of the calyx tube. V. Stamen, front view.

Zingiber latibracteum X.D.Ma, J.M.Lu & J.Y.Shen, sp. nov.  

Diagnosis: Zingiber latibracteum is readily distinguishable from Z. calcicola, Z. mellis and Z. plicatum by its glabrous ligules, rounded ligule apex, laminae without prominent plication, and shorter lateral staminodes (Table 1).

Etymology: The name ‘latibracteum’ from Latin latus (“wide”) and bractea (“bract”), indicating wide bracts in the species.

Xing-Da Ma, Jian-Mei Lu and Jian-Yong Shen. 2026. Zingiber latibracteum, A New Species of Zingiber (Zingiberaceae) from Northern Vietnam.  Taiwania. 71(3); 495-498 DOI: 10.6165/tai.2026.71.495 [2026 May 27] 

https://taiwania.ntu.edu.tw/abstract/2194