scholarly journals Two new species of Alseodaphnopsis (Lauraceae) from southwestern China and northern Myanmar: evidence from morphological and molecular analyses

PhytoKeys ◽  
2020 ◽  
Vol 138 ◽  
pp. 27-39
Author(s):  
Lang Li ◽  
Yun-Hong Tan ◽  
Hong-Hu Meng ◽  
Hui Ma ◽  
Jie Li

Alseodaphnopsis maguanensis and A. putaoensis, two new species of Alseodaphnopsis (Lauraceae) from southwestern China (Yunnan Province) and northern Myanmar (Kachin State), are here described and illustrated based on both morphological and molecular evidence. They are morphologically similar to Alseodaphnopsis rugosa and phylogenetically closely related to A. rugosa and A. hainanensis respectively. Their preliminary conservation status is also estimated according to the IUCN Red List Categories and Criteria.

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.


Phytotaxa ◽  
2019 ◽  
Vol 393 (1) ◽  
pp. 47 ◽  
Author(s):  
ZHEN-WEN LIU ◽  
WEI FANG ◽  
En-DE LIU ◽  
MING ZHAO ◽  
YAO-FENG HE ◽  
...  

Camellia mingii S.X.Yang is described and illustrated as a new species from southeast Yunnan Province, China. It is morphologically closest to C. pubipetala, but can be easily distinguished by its spiral arrangement of bracteoles and sepals; its bracteoles and sepals lunate, reniform or broadly ovate, glabrous inside and densely puberulent outside; its petals orbicular to short elliptic, puberulent on both sides; and its inner filaments puberulen to ca. 2/3 from base. Molecular analyses based on GBSSI sequences also support C. mingii as a distinct species of yellow camellia. It is ‘Critically Endangered’ (CR) according to the IUCN Red List Categories and Criteria.


PhytoKeys ◽  
2021 ◽  
Vol 187 ◽  
pp. 189-205
Author(s):  
Dai-Ke Tian ◽  
Wen-Guang Wang ◽  
Li-Na Dong ◽  
Yan Xiao ◽  
Min-Min Zheng ◽  
...  

Begonia giganticaulis, a huge new species in Begonia sect. Platycentrum of Begoniaceae from southern Xizang (Tibet) of China, is described. Morphologically, it is mostly similar to B. longifolia and B. acetosella, but clearly differs from the former mainly by its dioecious and taller plants, sparse hairs on abaxial veins, longer inflorescence, unique shape of fruits, and differs from the latter mainly by its late and longer flowering time, 6-tepals of female flower and 3-loculed ovary. The phylogenetic analyses also support the separation of the new species from other taxa. Based on the current data, its conservation status is assigned to Endangered (B2a) according to the IUCN Red List Categories and Criteria.


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.


2020 ◽  
Vol 28 (2) ◽  
pp. 75-84
Author(s):  
M. Marcela Mora ◽  
Porter P. Lowry II ◽  
Gregory M. Plunkett

Sciodaphyllum P. Browne (Araliaceae) has recently been resurrected to accommodate the majority of Neotropical species previously included in Schefflera J. R. Forst. & G. Forst. Recent field and herbarium studies have revealed many distinctive new species of Sciodaphyllum, including three from the eastern slopes of the Andes in central Peru, which are described and illustrated here: S. geniculatum M. M. Mora, Lowry & G. M. Plunkett, S. oxapampense G. M. Plunkett, Lowry & M. M. Mora, and S. rodolfoi Lowry, G. M. Plunkett & M. M. Mora. The conservation status of S. geniculatum is assessed as Vulnerable (VU) using the IUCN Red List categories and criteria, whereas both S. oxapampense and S. rodolfoi are assessed as Near Threatened (NT).


2020 ◽  
Vol 28 (1) ◽  
pp. 64-73
Author(s):  
Nadiah Manjato ◽  
Noromalala Ravololomanana ◽  
Richard Razakamalala

Ardisia sharoniae Manjato, Ravololoman.& Razakamal. and A. vohimenensis Manjato, Ravololoman. & Razakamal. (Primulaceae) are described as new species from southeastern Madagascar, the former from the Ankarabolava and Agnakatrika forests (Atsimo-Atsinanana Region) and the latter from the Vohimena range (Anosy Region). They differ from the four currently recognized Malagasy species of Ardisia Sw. by their leaves with serrate margins and their striking angulate twigs. The two new species differ from one another in several characters of their leaves, inflorescences, and fruits. An illustration and a distribution map are provided for each species. Preliminary assessments of the risk of extinction following the IUCN Red List categories and criteria indicate that both are Endangered. An identification key to the seven species of Ardisia occurring in Madagascar is presented.


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.


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