Thursday, June 17, 2021

[Botany • 2021] Zingiber magang & Z. tamii (Zingiberaceae) • Two New Species from central Vietnam

 

 Zingiber tamii N.S.Lý & Škorničk.

in Ly, Do, Cao, ... et Leong-Skornickova, 2021. 

Abstract
Zingiber magang and Z. tamii, two new species of Zingiber sect. Cryptanthium (Zingiberaceae) from central Vietnam are described and illustrated. Information on their distribution, ecology, phenology, uses and vernacular names are provided. A preliminary IUCN conservation assessment of each of these species is proposed. A key to species of Zingiber sect. Cryptanthium in Vietnam is also given.

Keyword: Annamite range, endemic species, monocots, taxonomy, Zingiber sect. Cryptanthium



Fig. 2. Zingiber magang N.S.Lý & Škorničk. 
A. Habit. B. Detail of pseudostem. C. Basal part of the plant with an inflorescence. D. Inflorescence with flowers (top view). E. Fertile bract (basal part of the inflorescence), flower enclosed in fertile bract (middle part of the inflorescence), bract, bracteole. F. corolla lobes, labellum, ovary with floral tube and stamen (calyx removed), calyx. G. Stamen from side and front view, ovary with epigynous glands. H. Young fruit from outside and when open with young seed in between.
Photos Ngọc-Sâm Lý from the type Lý-1327.

Fig. 1. Zingiber magang N.S.Lý & Škorničk. 
A. Habit. B. Basal part of the plant with an inflorescence. C. Inflorescence with a flower (side view).
Photos Ngọc-Sâm Lý from the type Lý-1327.

Zingiber magang N.S.Lý & Škorničk. sp. nov. 

 Zingiber magang is rather distinct from its congeners by combination of leafy shoots composed of only 3–5 prominently petiolate leaves with weakly plicate and somewhat shiny leathery laminae, and inflorescences with basal part of basal bracts convex and slightly inflated giving it somewhat bullate appearance. 

Vernacular names and uses: This species is locally known as magang (Kinh minority), Pagieng or Pagang (Co, Ca Dong and Hre minorities). Rhizomes of this species are harvested, crushed and applied for healing wounds and bone fractures. 

Etymology: The specific epithet “magang” is derived from the common name applied to this species by local people from Kinh tribe in Quảng Ngãi province
 

    

Fig. 4. Zingiber tamii N.S.Lý & Škorničk.
A. Basal portion of flowering plant showing rhizome, inflorescence and leafless sheaths. B. Fertile bracts (external and internal view), bracteole, flower in side view with bracteole attached. C. Flowerin side view with calyx removed. D. Flower dissection (from left): floral tube with ovary and stamen attached (calyx removed), ovary with epigynous glands, calyx, dorsal corolla lobe, two lateral corolla lobes, labellum with basally connate lateral staminodes
 Photos Ngọc-Sâm Lý from the type Lý-1323.

Fig. 3. Zingiber tamii N.S.Lý & Škorničk.
A. Plant habit. B. Leaves and petioles. C. Inflorescence with a flower (side view). D. Inflorescence with a flower (semi-top view).
Photos Ngọc-Sâm Lý from the type Lý-1323.

Zingiber tamii N.S.Lý & Škorničk. sp. nov. 

 Similar to Z. vuquangense N.S.Lý et al. by overall similarity in leafy shoots consisting of prominently petiolate, broadly elliptic and prominently plicate laminae, but differs by overall smaller size 0.5–0.7 m, shorter ligules 3–5 mm long, smaller abaxially glabrous laminae 15.8–21.5 × 7.5–9.5 cm, narrowly ovate bracts, shorter calyx 10–12 mm long, pale yellow and externally sparsely puberulous corolla lobes, pale yellow lateral staminodes and ovate to elliptic ovate very dark purple labellum with small yellow blotches and yellow margin (compared to larger size 1.2–1.8 m, ligules 12–30 mm long, larger laminae abaxially densely pubescent along midrib 26–50.8 × 9–14.7 cm, oblong to club-shaped bracts, longer calyx 17–18 mm long, bright yellow and glabrous corolla lobes, lateral staminodes yellow with pink purple apex and obovate pink-purple labellum with pale yellow spots in Z. vuquangense).  

Distribution and habitat: Near streams and in the moist and shady understorey of primary and secondary tropical broadleaved forests between 520–930 m elevation. 

 Eponymy: This species is named in honour of Mr. Trương Quang Tâm, a forestry engineer at Institute of Tropical Biology.


Ngọc-Sam Ly, Dang-Giap Do, Ngọc-Giang Cao, Ba-Vuong Truong, Van-Thanh Nguyen and Jana Leong-Skornickova. 2021. Zingiber magang and Z. tamii (Zingiberaceae), Two New Species from central Vietnam. Taiwania. 66(2); 232‒240. 


[Herpetology • 2021] Oligodon tolaki • A New Oligodon (Serpentes: Colubridae) from Sulawesi, Indonesia, Including Redescriptions of O. waandersi and O. propinquus


Oligodon tolaki
Amarasinghe, Henkanaththegedara, Campbell, Riyanto, Hallermann & Vogel, 2021

with O. waandersi and O. propinquus.


 Abstract 
We review the taxonomic status of Oligodon waandersi sensu lato after examining all the name-bearing types (including synonyms) and morphological evidence. Oligodon waandersi sensu stricto is widely distributed (up to 1200 m above sea level) throughout the southern, some parts of the central, and the northern slopes of Central Sulawesi Island, Indonesia, whereas a similar species, O. propinquus, is only known from its holotype and considered to have originated from Java. Here, we demonstrate that O. propinquus is a close match with the northern population (North and Gorontalo) of O. waandersi and morphologically distinct; hence, we consider the type locality of O. propinquus as North Sulawesi, not Java. Oligodon taeniurus, long considered a junior synonym of O. waandersi, is a distinct species, but here we synonymize it with the morphologically closely matched O. propinquus, which has priority over O. taeniurus. Oligodon waandersi in Southeast Sulawesi (including some populations of Buton Islet) is morphologically distinct from O. waandersi sensu stricto in South Sulawesi; hence, it requires a new name. The new species is distinguished from congeners by having the following combination of characters: maximum snout–vent length of 340 mm, a single postocular, a single cloacal plate, a completely divided nasal, ventrals 150–169, subcaudals 18–26, temporals 1+2, six supralabials with third and fourth in contact with eye, dorsal scale rows 15-15-15, hemipenes not forked and covered with spines, maxillary teeth 6–7, shorter tail (6.8–11.2% of total length), brownish dorsum with few dark-edged spots on the vertebral line anteriorly, reddish brown vertebral line on the posterior body and tail, mostly a blackish brown blotch below the eye, and whitish collar band interrupted middorsally. We provide a complete redescription for O. waandersi and O. propinquus based on respective holotypes deposited at the Natural History Museum London and the Zoologisches Museum Hamburg.

KEYWORDS: Celebes, distribution, Kukri snake, morphology, Rabdion waandersi, synonym






A.A. Thasun Amarasinghe, Sujan M. Henkanaththegedara, Patrick D. Campbell, Awal Riyanto, Jakob Hallermann and Gernot Vogel. 2021. Description of A New Oligodon (Squamata: Colubridae) from Sulawesi, Indonesia, Including Redescriptions of O. waandersi and O. propinquusHerpetologica. 77(2); 195-207. DOI: 10.1655/Herpetologica-D-20-00006.1

[Herpetology • 2021] Pristimantis ledzeppelin • A New Species of Terrestrial-breeding Frog Pristimantis (Anura: Strabomantidae) from the Cordillera del Cóndor, Zamora Chinchipe, Ecuador


Pristimantis ledzeppelin
Brito-Zapata & Reyes-Puig, 2021


ABSTRACT
We describe a new species of Pristimantis from the Comunidad Río Blanco, Cordillera del Cóndor, Ecuador. Pristimantis ledzeppelin sp. nov. is characterized by a snout–vent length of 23.9–24.6 mm in adult males (n = 2) and 36.1 mm in one adult female and is compared morphologically with Pristimantis muscosus and other similar species of Pristimantis. The new species is characterized by having skin on dorsum and flanks finely tuberculate to tuberculate, a distinctive scapular fold, skin on venter coarsely areolate; snout rounded with a small rostral papilla; discs on the digits truncate, three times the width of the digits; groin and hidden surfaces of thighs yellowish-cream with distinctive brownish-black marks and/or orange irregular blotches; and coppery red iris.

KEYWORDS: Montane forest, Pristimantis ledzeppelin sp. nov., Comunidad Río Blanco, Terrarana

Figure 5. Coloration in life of Pristimantis ledzeppelin sp. nov.
Dorsal view. (a) ZSFQ 1872, SVL = 36.1 mm, holotype, adult female; (b) ZSFQ 1878, SVL = 24.6 mm, paratype, adult male; (c) ZSFQ 1877, SVL = 23.8 mm, paratype, adult male.
Ventral view (d) ZSFQ 1872, SVL = 36.1 mm, holotype, adult female; (e) ZSFQ 1878, SVL = 24.6 mm, paratype, adult male; (f) ZSFQ 1877, SVL = 23.8 mm, paratype, adult male. Photographs by David Brito-Zapata


Pristimantis ledzeppelin sp. nov.
Proposed standard English name. Led Zeppelin’s Rain Frog
Proposed standard Spanish name. Cutín de Led Zeppelin

Diagnosis: A new species of Pristimantis having the following combination of characters: (1) skin on dorsum and flanks finely tuberculate to tuberculate, with “W” shaped scapular fold (reduced by preservation effects); dorsolateral folds absent; skin on venter coarsely areolate; discoidal fold present; (2) tympanic membrane and tympanic annulus present, round, equivalent to 31.4% of ED; supratympanic fold present, extending from the eye insertion towards the posterior edge of the tympanum, covering 1/8 of the tympanum; with several conical to subconical postrictal tubercles, prominent; (3) snout rounded with a small rostral papilla in dorsal view, moderate in length and rounded in lateral view (Figure 1); a row of subconical tubercles on the lower jaw; (4) upper eyelid with one evident subconical tubercle on the center of eyelid, surrounded by several lower subconical tubercles (less evident in preserved specimens) (Figure 1); EW 89% of IOD; cranial crests absent; (5) dentigerous processes of vomers, prominent, triangular in outline, with three to four teeth, moderately separated, posteromedial to choanae; (6) vocal slits absent, nuptial pads present; (7) Finger I shorter that Finger II, discs of digits broadly expanded, truncate; three times the width of the digits on Fingers II to IV; (8) fingers with narrow lateral fringes; (9) ulnar tubercles present, subconical; (10) heel bearing one conical tubercle surrounded by two to five subconical low tubercles (less evident in preserved specimens), outer edge of tarsus bearing 4–6 subconical tubercles, inner tarsal fold absent; (11) inner metatarsal tubercle oval, 6X times the outer metatarsal tubercle that is subconical; supernumerary plantar tubercles present, evident, distributed throughout the plantar surface (Figure 3); (12) toes with narrow lateral fringes, discs slightly less wide than those of fingers, discs of digits broadly expanded, truncate; three times the width of the digits on toes II to V, webbing basal; Toe V longer that Toe III, disc on Toe V reaches and exceeds the distal subarticular tubercle on Toe IV; (13) in life, dorsum from background beige with irregular transversal dark brown marks to greenish-brown with scattered cream dots; groin and hidden surfaces of thighs yellowish-cream with distinctive brownish-black marks (more widespread in males) and/or orange irregular blotches; venter yellowish-cream to light brown with coppery tones and marbling with dark brown; ventral surfaces of the calf brownish-black enclosing yellowish-cream to yellowish-orange blotches. Coppery-red iris with thin brown reticulations; (14) SVL in two adult males 24.3 ± 0.3 (23.9–24.6 mm); in one adult female 36.1 mm.

Etymology: The name honours Led Zeppelin and their extraordinary music. Led Zeppelin was a British rock band formed in London in 1968, one of the most influential bands throughout the 1970s, and progenitors of both hard rock and heavy metal.

 
David Brito-Zapata and Carolina Reyes-Puig. 2021. A New Species of Terrestrial-breeding Frog Pristimantis (Anura: Strabomantidae) from the Cordillera del Cóndor, Zamora Chinchipe, Ecuador. Neotropical Biodiversity. 7(1); 213-222. DOI: 10.1080/23766808.2021.1940048 

Resumen: Describimos una nueva especie de Pristimantis de la Comunidad de Río Blanco, Cordillera del Cóndor, Ecuador. Pristimantis lezeppelin sp. nov. es caracterizada por una longitud rostro-cloacal de 23.9–24.6 mm en machos adultos (n = 2), 36.1 mm en una hembra adulta, y es comparada morfológica con Pristimantis muscosus y con otras especies similares de Pristimantis. La especie nueva se caracteriza por tener la piel del dorso y flancos finamente tuberculada a tuberculada, un pliegue escapular distintivo, piel en el vientre fuertemente aerolada; hocico redondeado con una pequeña papila rostral; discos de los dígitos truncados, tres veces el ancho de los dígitos; ingles y superficies ocultas de los muslos crema amarillentas con marcas distintivas café-negruzcas o negras con manchas irregulares crema amarillentas y naranja; e iris rojo-cobrizo.
Palabras clave: Bosque montano, Pristimantis ledzeppelin sp. nov., comunidad Río Blanco, Terrarana

[Botany • 2021] Begonia jubar (Begoniaceae) Begonia of Vietnam: An Updated Checklist, Including A New Species and A New Record


Begonia jubar V.T.Pham & C.W.Lin
 
in Pham, Dinh, Nguyen, ... et Lin, 2021. 

Abstract
Vietnam is an important hotspot for Begonia in Southeast Asia. Due to its broad latitudinal range and varied terrain, it has developed a rich biodiversity of flora, of which the genus of Begonia is one of the most striking taxa. In this study, we provide a checklist of Begonia found in Vietnam, including a new species: Begonia jubar V.T.Pham & C.W.Lin, which is described and illustrated. In addition, Begonia modestiflora Kurz is recorded for the first time in Vietnam.

Keywords: biodiversity, silicate geology, taxonomy, Begonia, Eudicots





Begonia jubar V.T.Pham & C.W.Lin
 
 


Van The Pham, Quang Diep Dinh, Van Canh Nguyen, Ngoc Bon Trihn, Duc Dinh Nguyen, The Hien Nguyen and Che Wei Lin. 2021. Begonia of Vietnam: An Updated Checklist, Including A New Species and A New Record. Phytotaxa. 507(2); 144–154. DOI: 10.11646/phytotaxa.507.2.2

    

Wednesday, June 16, 2021

[Mammalogy • 2021] Dendrohyrax interfluvialis • A New Species of Tree Hyrax (Hyracoidea: Procaviidae) from West Africa and the Significance of the Niger–Volta Interfluvium in Mammalian Biogeography


Dendrohyrax interfluvialis
 Oates, Woodman, Gaubert, Sargis, Wiafe, Lecompte, Dowsett-Lemaire, Dowsett, Bi, Ikemeh, Djagoun, Tomsett & Bearder, 2021

 
Abstract
Tree hyraxes (Dendrohyrax) are one of only three genera currently recognized in Procaviidae, the only extant family in the mammalian order Hyracoidea. Their taxonomy and natural history have received little attention in recent decades. All tree hyrax populations of Guineo-Congolian forests of Africa are currently treated as a single species, Dendrohyrax dorsalis, the western tree hyrax, but many other groups of mammals distributed across this large biome have been shown to consist of several different species, each restricted to a distinct biogeographical region. We analysed variation in loud-call structure, pelage colour, skull morphometrics and mitochondrial genomes in populations across much of the range of D. dorsalis. This integrative approach uncovered considerable cryptic variation. The population found between the Niger and Volta Rivers in West Africa is particularly distinctive, and we describe it herein as a new species. Our study highlights the need to revise the taxonomy of the genus Dendrohyrax in light of modern systematics and current understanding of its distribution. It also adds to a growing body of evidence that the Niger–Volta interfluvium has a distinct meso-mammal fauna. Unfortunately, the fauna of this region is under major threat and warrants much greater conservation attention.

Keywords: biogeography, cryptic species, Dahomey Gap, endemism, Mammalia, molecular systematics, morphometrics, skull, speciation, vocalizations




Dendrohyrax interfluvialis

Photo of tree hyrax habitat; Omo Forest Reserve W Nigeria


John F. Oates, Neal Woodman, Philippe Gaubert, Eric J. Sargis, Edward D. Wiafe, Emilie Lecompte, Françoise Dowsett-Lemaire, Robert J. Dowsett, Sery Gonedelé Bi, Rachel A. Ikemeh, Chabi A. M. S. Djagoun, Louise Tomsett and Simon K. Bearder. 2021. A New Species of Tree Hyrax (Procaviidae: Dendrohyrax) from West Africa and the Significance of the Niger–Volta Interfluvium in Mammalian Biogeography. Zoological Journal of the Linnean Society. zlab029.  DOI: 10.1093/zoolinnean/zlab029

A new study in the Zoological Journal of the Linnean Society co-authored by Yale anthropologist Eric Sargis finds that the barking hyraxes are a separate species from their shrieking neighbors. The newly described species, Dendrohyrax interfluvialis, populates the wet and dry forests that lie between the two rivers in coastal regions of southeastern Ghana, southern Togo and Benin, and southwestern Nigeria. 

Barks in the night lead to the discovery of new species


[Herpetology • 2021] Vietnamophryne vuquangensis • A New Species of Vietnamophryne (Anura, Microhylidae) from Vietnam


Vietnamophryne vuquangensis 
 Hoang, Jiang, Nguyen, Orlov, Le, Nguyen, Nguyen, Nguyen & Ziegler, 2021

Vu Quang Dwarf Frog | Nhái lùn vũ quang || DOI:  10.35929/RSZ.0046 

 Abstract  
A new species of the genus Vietnamophryne is described from Vu Quang National Park in North Vietnam based on molecular phylogenetic and morphological analyses. The new species is morphologically distinct from congeners and can be easily distinguished from all other members of the genus Vietnamophryne by (1) body size males (n=4) 14.12-14.91 mm; females (n=9) 15.15-17.33 mm; (2) dorsal skin shagreened with small flat pustules loosely scattered on back in males, mostly smooth, slightly shagreened posteriorly, lacking enlarged tubercles in females; (3) belly color ivory-lemon to lemon-yellow with weak dark-brown marbling in males, bright lemon-yellow with weak dark-brown marbling in females; (4) tympanum relatively faint, comparatively small, rounded, 5.4-6.0% of SVL in males, 4.8-6.2% of SVL in females; (5) ratio snout length to eye length 119-128% in males, 100-130 % in females; (6) ratio head width to head length 117-124% in males, 110-131% in females; and (7) ratio first finger to second finger 43-49% in males, 44-50% in females. In the phylogenetic analysis the new species revealed to be sister to V. inexpectata, with 4.3-4.6% divergence in the 16SrRNA gene. So far, the new species is only known from the evergreen tropical forests of Vu Quang National Park at an elevation of 966 m a.s.l. This is the third species of Vietnamophryne reported from Vietnam.

KEYWORDS: Vietnamophryne vuquangensis sp. nov., MtDNA phylogeny, new species, taxonomy, Vietnam

Fig. 1. Map showing the type locality of Vietnamophryne vuquangensis sp. nov. (red circle) in Vu Quang NP, Ha Tinh Province, Vietnam.

Fig. 3. Holotype (VNMN 010489, male) of Vietnamophryne vuquangensis sp. nov. in life:
 dorsolateral view (A) and ventral view (B).

    

Fig. 5. Paratypes of Vietnamophryne vuquangensis sp. nov.
(A) VNMN 010487, (B) VNMN 010491, (C) VNMN 010519, (D) VNMN 010518, (E) VNMN 010490, (F) VNMN 010521.

Vietnamophryne vuquangensis sp. nov.

Diagnosis: (1) Body size small SVL (n=4 males, 14.12-14.91 mm; n=9 female, 15.15-17.33 mm); (2) body habitus stout FLL/SVL and HLL/SVL ratios 52-55% and 149-157% in males; 50-58% and 136-158% in females, respectively; (3) Head length greater than width, HW/HL ratio 117-124% in males, 110-131% in females; (4) snout comparatively long, rounded in dorsal view, snout length greater than eye length (SL/EL ratio 119-128% in males; 103-130% in females); (5) eye medium-sized, eye length/snout-vent length ratio 11% in males; 10-12% in females; eye to nostril distance 6-7% of SVL; (6) tympanum relatively blurred in males, comparatively small, rounded, TYD/SVL ratio 5.4-6.0% in males, 4.8-6.2% in females; (7) first finger (F1) well developed, less than half of second finger (F2) (1FLO/2FLO ratio 43-49% in male, 44-50% in females), relative finger lengths: I<IV<II<III, relative toe lengths: I<II<V<III<IV; (8) tips of all digits rounded, not expanded in F1-F4, T1, T2, and T5, weakly expanded in T3 and T4; (9) subarticular tubercles under fingers and toes weak, indistinct; (10) outer metatarsal tubercle absent, inner metatarsal tubercle small, flattened (3-5% of SVL); (11) skin of ventral surface completely smooth, dorsal skin shagreened with small flat pustules loosely scattered on dorsum in males, dorsal skin mostly smooth, slightly shagreened posteriorly, lacking enlarged tubercles in females; (12) belly color ivory-lemon to lemon-yellow with weak dark-brown marbling in males, bright lemon-yellow with weak dark-brown marbling in female.

Etymology: The specific epithet is in reference to the type locality (Vu Quang National Park). We recommend “Vu Quang Dwarf Frog” as the common English name of the new species and the common name in Vietnamese as “Nhái lùn vũ quang”.

Distribution and ecology: Vietnamophryne vuquangensis sp. nov. is currently known only from the type locality, Vu Quang NP, Vu Quang District, Ha Tinh Province. Specimens of the new species were found on the soil or under large tree-trunks and under leaf litter in evergreen tropical forests of Vu Quang NP at an elevation of 966 m a.s.l. (Fig. 6). The air temperature at the time of the finding was not recorded, but was 27°C at 19:40h. Other species of amphibians were found at night in the same habitat comprising Microhyla mukhlesuri Boulenger, 1884, M. cf. heymonsi Vogt, 1911, Leptobrachium cf. chapaensis (Bourret, 1937) and Polypedates mutus (Smith, 1940).
 

Van Chung Hoang, Jianping Jiang, Quoc Huy Nguyen, Nikolai Orlov, Van Manh Le, Viet Hung Nguyen, Vinh Thanh Nguyen, Tao Thien Nguyen and Thomas Ziegler. 2021. A New Species of Vietnamophryne from Vietnam. Revue suisse de Zoologie. 128(1); 207-219. DOI:  10.35929/RSZ.0046 

    

[Botany • 2021] Paraboea khotamiae (Gesneriaceae) ດອກລະຄັງໂຄຕະມີ • A New Species of Paraboea and A New Species Record of Middletonia (Gesneriaceae) from A Limestone Karst of Central Laos


Paraboea khotamiae Phonep. & Souvann. 

in Phonepaseuth, Souvannakhoummane, ... et Yahara, 2021. 
ດອກລະຄັງໂຄຕະມີ  ||  DOI: 10.20531/tfb.2021.49.1.17 

ABSTRACT
A new species of Paraboea (Gesneriaceae), Paraboea khotamiae, from a limestone karst in central Laos, is described and illustrated. The species resembles Paraboea bintangensis, P. prazeri and P. robusta, but differs in leaf shape and floral features, especially corolla shape and size, the interior of the corolla tube, and capsule characters. In addition, we report the occurrence of Middletonia reticulata (Gesneriaceae) for the flora of Laos for the first time.

Keywords: Angiosperms, Flora of Laos, limestone flora, taxonomy


Paraboea khotamiae Phonep. & Souvann.:
A. Flower (front view); B. Flower (lateral view); C. Calyx lobes; D. Corolla opened out (adaxial side); E. Pistil; F. Stamens (front view); G. Stamens (lateral view); H. Capsule with persistent stigma.
 Materials from Phonepaseuth P010 (FOF). 
Line drawing by K. Souvannakhoummane.

Paraboea khotamiae Phonep. & Souvann.:
A. Habitat; B. Flowering plant; C. Leaves adaxial side (below) and abaxial side (above); D. Inflorescences; E. Flower (front view); F. Flower (back view); G. Lateral view of flower bud (left) and flower (right); H. Dissected flower showing corolla, stamens, pistil and calyx; J. Fruits.
Photos (A–H) from Phonepaseuth P010 (FOF) and (J) Phonepaseuth et al. P015 (FOF) by P. Phonepaseuth.


Paraboea khotamiae Phonep. & Souvann., sp. nov.

This species is most similar to Paraboea bintangensis B.L.Burtt from Peninsular Malaysia in its almost stemless habit, ovate or ovate-oblong leaves, axillary inflorescences and white flowers but differs in having 6–8 pairs of lateral veins anastomosing (vs ca 5 veins in P. bintangensis), 3 upper calyx lobes fused ½–¾ lobes length and 2 lower lobes free (vs 5calyx lobes free), and larger corolla 1.6–1.8 cm long, 1.6–2.4 cm across (vs ca 1 cm long, ca 1.5 cm across). Paraboea khotamiae is also similar to P. prazeri (B.L.Burtt) C.Puglisi from Myanmar in having long petiolate leaves, cymose inflorescence, 3 upper calyx lobes fused, and lingulate stigma, but differs in havinga broader stem 1–1.5 cm in diameter (vs 3–3.5 mm in diam. in P. prazeri), leaf blade ovate to ovate-oblong, glabrescent above (vs elliptic, pubescent with short hairs above), non-twisted capsules (vs twisted capsule). It also shares some similar characters with Paraboea robusta (B.L.Burtt) C.Puglisi from Thailand(Northern region) such as a white corolla, lingulate stigma, 3 upper calyx lobes fused, and cymose inflorescence, but differs in its shorter stem 0.8–1.2 cm long(vs at least 6 cm long in P. robusta), smaller ovate or ovate-oblong leaf blade 7–10 × 5–6 cm, glabrescent adaxially (vs narrowly elliptic-oblanceolate, 12–25 × 2–5.5 cm, densely pilose-pubescent adaxially). 

Type: Laos. Khammouan Province, Gnommalat District, in limestone karst, 30 Aug. 2020, Phonepaseuth, P. P010 (holotype FOF[FOF0005194!]; isotype HNL!).

Etymology.— The specific epithet “khotamiae” is coined in honour of Khotamy Sayyasone - ໂຄຕະມີ ໄຊຍະສອນ, who was the teacher of the first author in the field of biology and taxonomy. 
ດອກລະຄັງໂຄຕະມີ

Ecology.— Paraboea khotamiae grows on shaded limestone cliffs, associated with Begonia spp. (Begoniaceae), Amorphophallus spp. (Araceae) and some lithophytic ferns; ca 200 m elev.

 

 
Phongphayboun Phonepaseuth, Keooudone Souvannakhoummane, Shuichiro Tagane, Phetlasy Souladeth and Tetsukazu Yahara. 2021. A New Species of Paraboea and A New Species Record of Middletonia (Gesneriaceae) from A Limestone Karst of Central Laos. Thai Forest Bulletin (Botany). 49(1), 135-141. DOI: 10.20531/tfb.2021.49.1.17


[Botany • 2021] Vincetoxicum emeiense (Apocynaceae: Asclepiadoideae: Asclepiadeae) • A New Species from Sichuan, China


Vincetoxicum emeiense  

in Zeng, Yang, Yu & Shen, 2021. 
 
Abstract
Vincetoxicum emeiense (Apocynaceae), a new species from Emeishan City, Sichuan Province, China, is described and illustrated. It is morphologically similar to V. hui and V. koi but can be distinguished by the glabrous stem, marginally finely ciliate with adaxially puberulent leaves and orange to purple corolla. Color photographs, conservation assessment and other relevant notes are also provided.

Keywords: Mount Emei, morphology, new taxon, Tylophora, Eudicots

 
    


Si-Yuan Zeng, Qiyi Yang, Jie Yu and Jian-Yong Shen. 2021. Vincetoxicum emeiense (Asclepiadeae, Asclepiadoideae, Apocynaceae), A New Species from Sichuan, China. Phytotaxa. 505(1); 56–62. DOI: 10.11646/phytotaxa.505.1.3

New Species of Milk Weed Family Found in Mount Emei


[Botany • 2021] Argyreia sharadchandrajii (Convolvulaceae) • A New Species from the Western Ghats, India


 Argyreia sharadchandrajii Lawand & Shimpale

in Lawand & Shimpale, 2021.

Abstract
 Argyreia sharadchandrajii Lawand & Shimpale, a new species from the Western Ghats of Maharashtra, India is described and illustrated. Argyreia sharadchandrajii is morphologically similar to A. pilosa Wight & Arn. but differs in habit, shape of leaves and bracts, indumentum and size of peduncle, sepal and berries. Notes on taxonomy and conservation status are provided.

 Keywords: Asia, Ipomoeae, Maharashtra, Morning glory, Taxonomy.

 Argyreia sharadchandrajii Lawand & Shimpale:
 a. Flowering twig; b. Bracts; c. Outer Sepals; d. Inner sepals; e. Dissected corolla with androecium; f. Gynoecium with disc; g. Berries
 (from P.R. Lawand 077; drawn by Pramod Lawand).

 Argyreia sharadchandrajii Lawand & Shimpale:
a. Habitat; b. Habit; c. Flower–side view; d. Fruiting habit; e. Androecium; f. Gynoecium
 (photos by Vinod Shimpale).


Comparison between Argyreia pilosa Wight & Arn. (a-d)
and  Argyreia sharadchandrajii Lawand & Shimpale (e-h):
a & e. Abaxial leaf surface; b & f. Inflorescence; c & g. Bracts; d & h. Sepals
(photos by Pramod Lawand).

Argyreia sharadchandrajii Lawand & Shimpale, sp. nov. 

 Similar to A. pilosa but can be distinguished by its prostrate habit, terete petioles, widely ovate to orbicular leaves, white sericeous indumentum on abaxial leaf surface, short peduncles, oblong or lance-ovate bracts, unequal sepals and larger berries (2–2.5 cm across). The differences between the two species are presented in Table 1 and pictorially represented in Fig. 3.

Habitat: This species grows in open habitats and trails amidst grassland but remain rooted near shrubs. 

Etymology: The specific epithet ‘sharadchandrajii’ is chosen after Shri. Sharadchandraji Pawar, former Union Minister of Agriculture, Government of India, New Delhi for his valuable contribution to Indian agriculture. 

Distribution: Known from a single locality (Fig. 4) in the sub-ranges of Sahyadris (the Western Ghats), India.
  

Pramod R. Lawand and Vinod B. Shimpale. 2021. Argyreia sharadchandrajii (Convolvulaceae), A New Species from the Western Ghats, India. RHEEDEA: Journal of the Indian Association for Angiosperm Taxonomy. 31(1); 18-24. DOI: 10.22244/rheedea.2021.31.01.03