scholarly journals Validation of Gastrochilus prionophyllus (Vandeae, Orchidaceae), a new species from Yunnan Province, China

PhytoKeys ◽  
2019 ◽  
Vol 130 ◽  
pp. 161-169
Author(s):  
Xun-Feng Wu ◽  
De-Ping Ye ◽  
Bo Pan ◽  
Xiang-Qun Lin ◽  
Hong Jiang ◽  
...  

Gastrochilus prionophyllus, which was previously not validly published, is here validated. The species is described along with illustration and photos. Morphologically, the long and pendulous stem and distichous leaves of this new species indicate that it belongs to the sect. Microphyllae. It is unique in having thick fleshy leaves and margin significantly serrate, small flowers, reniform epichile and margin with dentations, thickened cushion on the central epichile and subconic hypochile. Meanwhile, a preliminary conservation status assessment according to IUCN Red List categories and criteria is given to the new species.

PhytoKeys ◽  
2019 ◽  
Vol 117 ◽  
pp. 1-8 ◽  
Author(s):  
Lei Wu ◽  
Xiong Li ◽  
Wen-Jian Liu ◽  
Quan-Ru Liu

Spiradicliskarstana, a new species of Spiradiclis (Rubiaceae) collected from Yunnan, China, is described for the first time. It is morphologically close to S.jingxiensis, but differs from the latter mainly by its inflorescences with 5–9 flowers, its 1.5–2.4 mm long peduncles, its stipules shorter than 1 mm and the 5–12 pairs of secondary veins. The conservation status is assessed as “Vulnerable” (VU) according to the IUCN Red List Categories and Criteria.


Phytotaxa ◽  
2021 ◽  
Vol 480 (2) ◽  
pp. 201-209
Author(s):  
SHI-WEI GUO ◽  
WEN-HONG CHEN ◽  
AUNG AUNG ◽  
SIRILAK RADBOUCHOOM ◽  
JIN-CHAO ZHAO ◽  
...  

Begonia nangunheensis belonging to Begonia sect. Platycentrum is described and illustrated as a new species in Caryota obtusa forests in Yunnan province of China. It is similar to Begonia siamensis in 3-winged fruits, 2-loculed ovary and axile placentation with 2 segments per locule, but differs in its glabrous petiole and abaxial leaf-blade, ovate outer tepals and oblanceolate to narrowly obovate inner tepals of staminate flower, and the unequal pistillate tepals. The new species is assigned to Critically Endangered according to the guidelines of IUCN Red List Categories and Criteria (version 13).


2020 ◽  
Vol 45 (1) ◽  
pp. 219-225
Author(s):  
Cassio Rabuske-Silva ◽  
Marcos Sobral ◽  
João Ricardo Vieira Iganci

Abstract—Valeriana caparaoensis, a new species from the High Altitude Tropical Grasslands of Southeastern Brazil, is described and illustrated. The new species is known only from the Serra do Caparaó massif, between the states of Minas Gerais and Espírito Santo, Southeastern Brazil. It shares morphological affinities with V. catharinensis and V. polystachya, the first restricted to Brazilian Subtropical Highland Grasslands, and the last restricted to Lowland Grasslands of Southern Brazil, Uruguay and Argentina. Besides the great geographical disjunction, the new species differs from the other two species by the pinnately lobed proximal leaves, by the lanceolate distal lobes and longer pseudopetioles in distal leaves, by differences in the size of the flowers, and by the rounded to ovate and broader achenes. Additionally, we provide the preliminary conservation status assessments using IUCN Red List categories and criteria, as well as an updated checklist and a key for Valeriana species from Southeastern Brazil.


Phytotaxa ◽  
2020 ◽  
Vol 436 (3) ◽  
pp. 293-297
Author(s):  
XUN-FENG WU ◽  
QIANG LIU ◽  
JIN-LONG LI ◽  
ZONG-YING TANG ◽  
XIAO-KE XING

Cheirostylis barbata, a new species of Orchidaceae, is described and illustrated from Yunnan Province, China. It is morphological similar to C. griffthii, but it can be easily distinguished from the latter in having densely villous inflorescence, floral bracts 1.2–1.4 cm, significantly longer than ovary, lobes of lip deeply laciniate with 7–9 divisions, each lacinae randomly oriented, 6.0–7.5 mm long, hypochile containing 2 callus, each callus 4-toothed. A preliminary assessment of ex­tinction risk, according to the IUCN Red List Categories and Criteria, is also provided.


Phytotaxa ◽  
2020 ◽  
Vol 461 (3) ◽  
pp. 195-203
Author(s):  
GÜLNUR EKŞİ ◽  
HAYRİ DUMAN

Allium shahinii, a new species of Allium sect. Scorodon, is described and illustrated from Erzincan Province, Eastern Turkey. It is a narrowly distributed geophyte growing on siliceous screes of warm exposure in mountain ranges of the nemoral and thermophilous deciduous woodland zone, showing close morphological relationships mainly with A. moschatum, A. stocksianum, A. spirophyllum, A. circumflexum but it is clearly differentiated due to perigon, outer tunic, indumentum, leaf and scape characteristics. In this study, diagnostic characters, description, taxonomic comments, photographs, distribution map, detailed illustration, the conservation status of A. shahinii and identification key are provided for A. shahinii and related taxa. According to IUCN Red List Categories and Criteria, A. shahinii is assessed here as a Critically Endangered (CR) species.


Phytotaxa ◽  
2018 ◽  
Vol 340 (3) ◽  
pp. 293 ◽  
Author(s):  
QIANG LIU ◽  
JIANG-YUN GAO

Gastrochilus dulongjiangensis, a new species from Gaoligongshan National Natural Reserve, Yunnan, China, is described here. It is morphologically similar to G. pseudodistichus and G. fuscopunctatus, but can be distinguished from them by having the orbicular epichile, hypochile as wide as epichile and fusiform pollinia. A preliminary risk-of-extinction assessment shows that the new species should be regarded as Data Deficient (DD) according to the IUCN Red List Categories and Criteria.


PhytoKeys ◽  
2020 ◽  
Vol 153 ◽  
pp. 37-48
Author(s):  
Zhiyou Guo ◽  
Zhaowen Wu ◽  
Weibin Xu ◽  
Zhenyu Li ◽  
Xiaoguo Xiang

Here we describe Paraboea dolomitica Z.Y. Li, X.G. Xiang & Z.Y. Guo, a new species of Gesneriaceae from Guizhou, China. Based on recent extensive observations, this new species is morphologically similar to Paraboea filipes (Hance) Burtt, in having obovate leaf blades, 1–4-flowered cymes and purplish corolla, but differs from that species by the combination of denticulate leathery leaves, sparsely brown haired peduncles, two woolly bracts, reniform anthers and two glabrous staminodes. Additionally, molecular data support this new species as a member of a clade that includes P. crassifolia, P. tetrabracteata, P. peltifolia, P. vetutina, P. dushanensis, P. dictyoneura, P xiangguiensis and P. guilinensis, but it is distinct from them in leaf position, inflorescence, penduncle, bract and capsule. The conservation status of this species is considered to be “Vulnerable” (VU) according to the IUCN Red List Categories and Criteria.


PhytoKeys ◽  
2021 ◽  
Vol 183 ◽  
pp. 108-114
Author(s):  
Cuong Huu Nguyen ◽  
Ly Van Nguyen ◽  
Khang Sinh Nguyen ◽  
Alexander A. Egorov ◽  
Leonid V. Averyanov

Hemiboea chanii, a new species of Gesneriaceae from Ha Giang Province, northern Vietnam, is here described and illustrated. It has many branched stems, diamond-shaped involucre with two cirrose opposite apices, a pink corolla, red spotted inside, and a flowering time in January-February. Among congeners with an externally hairy corolla, this new species is morphologically close to H. crystallina and H. sinovietnamica. Diagnostic discriminative characters in all mentioned species are discussed. The conservation status of this species is considered to be “Critically endangered” (CR) according to the IUCN Red List Categories and Criteria.


Phytotaxa ◽  
2019 ◽  
Vol 388 (1) ◽  
pp. 135
Author(s):  
FENGLIN CHEN ◽  
YUNFEI DENG ◽  
ZHIBIN XIONG ◽  
JINGCHENG RAN

Strobilanthes hongii, a new species of Acanthaceae is described and illustrated from Libo, Guizhou, China. The new species is similar to S. pateriformis and S. truncata, but differs by the characters of leaf blade, bracteole and calyx and pollen grains. The new species is plietesial and grows in forest on limestone hills. The conservation status of S. hongii is assessed as “Vulnerable (VU)” according to the IUCN red list categories and criteria.


PhytoKeys ◽  
2019 ◽  
Vol 122 ◽  
pp. 79-86 ◽  
Author(s):  
Zhaowen Wu ◽  
Zhiyou Guo ◽  
Chaoyi Deng ◽  
Zhenyu Li ◽  
Xiaoguo Xiang

Hemiboeaalbiflora X.G.Xiang, Z.Y.Guo & Z.W.Wu, sp. nov., a new species of Gesneriaceae from Guizhou, China, is described and illustrated. This species was previously listed informally as a variety of H.gamosepala, but it differs significantly from H.gamosepala by its 5-parted calyx from the base, longer peduncle, white corolla and longer pistil. Based on recent extensive observations, this new species is similar to H.cavalerieivar.paucinervis and H.subcapitata but differs from them by its longer petiole, larger involucre, white corolla and longer staminal filaments. The conservation status of this species is considered to be “Vulnerable” (VU) according to the IUCN Red List Categories and Criteria.


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