scholarly journals Dryopteris wulingshanensis (Dryopteridaceae), a new species from Hunan, China

PhytoKeys ◽  
2021 ◽  
Vol 185 ◽  
pp. 17-26
Author(s):  
Jiang-Ping Shu ◽  
Zi-Yue Liu ◽  
Zhi-Rong Gu ◽  
Li-Jun Chen ◽  
Hong-Jin Wei ◽  
...  

Dryopteris wulingshanensis, a new species growing on limestone in the Wulingshan Mountains, Hunan, China, is described and illustrated. This species is most similar to D. jishouensis and D. gymnophylla on general morphological traits, such as the form of scales, rhizome and sori, but differs by the number of vascular bundles at the base of the petiole, length to width ratio of lamina, stalk length of basal pinnae, division of the lamina, apex form of the pinnule and habitat. Moreover, molecular phylogenetic analysis using the chloroplast rbcL gene suggested that D. wulingshanensis, as the sister group of D. jishouensis, is a monophyletic clade. According to its restricted geographic range, small populations and few individuals, D. wulingshanensis should be considered endangered, according to the IUCN Red List criteria.

PhytoKeys ◽  
2018 ◽  
Vol 98 ◽  
pp. 73-83 ◽  
Author(s):  
David H. Lorence ◽  
Thomas R. Van Devender ◽  
George M. Ferguson

The new species Chiococcagrandiflora Lorence & T.Van Devender from Sinaloa and Sonora, Mexico differs from its congeners by its larger, showy white flowers in compact cymes of 3–9, and infundibuliform corollas 16–20 mm long with tubes 13–17 mm long and lobes 3–3.5 mm long. Its distribution, habitat, and relationships are outlined. The conservation status for this species is estimated to be Endangered (EN) based on IUCN Red List Criteria.


Zootaxa ◽  
2018 ◽  
Vol 4450 (3) ◽  
pp. 359 ◽  
Author(s):  
SIMON T. MADDOCK ◽  
MARK WILKINSON ◽  
DAVID J. GOWER

A new species of indotyphlid caecilian amphibian, Hypogeophis montanus sp. nov., is described based on a series of specimens from the Seychelles island of Mahé, collected from two localities in 2013 and 2015. The new species most closely resembles the Seychelles (Mahé) endemic H. brevis in being short (maximum known total length in life ca. 110 mm) and long snouted, but differs by having more vertebrae, a relatively smaller head, and substantially distinct mitochondrial and nuclear gene sequences. Hypogeophis montanus sp. nov. is known from higher elevations (718–731 m) than H. brevis (ca. 350–650 m), and its elevationally restricted distribution on a single small island likely renders it threatened under IUCN Red List criteria. Hypogeophis montanus sp. nov. is the third species of small and long-snouted caecilian reported from the Seychelles. Along with H. brevis and H. pti, H. montanus sp. nov. is among the smallest known species of caecilian and possibly has the smallest global distribution. 


Phytotaxa ◽  
2021 ◽  
Vol 516 (1) ◽  
pp. 101-107
Author(s):  
KEAN ROE F. MAZO ◽  
LOWELL G. ARIBAL ◽  
RENE ALFRED ANTON BUSTAMANTE ◽  
YU PIN ANG

Begonia tinuyopensis is described and illustrated as a new species from Zamboanga del Norte, Philippines. This new species resembles B. mearnsii by having a decumbent stem, scattered hairs over the entire plant, terminal inflorescence bearing 2 staminate tepals and 5 pistillate tepals. However, Begonia tinuyopensis is distinct by having sparse pilose (vs. matted with long brown hairs) stems, ovate (vs. suborbicular to subreniform) leaves and glabrous (vs. densely pubescent) ovary. We assign B. tinuyopensis as Endangered (EN) following IUCN Red List Criteria.


Phytotaxa ◽  
2021 ◽  
Vol 494 (3) ◽  
pp. 268-272
Author(s):  
MOMANG TARAM ◽  
DIPANKAR BORAH ◽  
MARK HUGHES

A new species of Begonia sect. Platycentrum, B. kekarmonyingensis, from Kekar Monying, a place of historical significance in Arunachal Pradesh, Northeast India is illustrated and described. It is allied to B. cathcartii and B. menglianensis, and morphological similarities and differences between the species are discussed. It has been assessed as Vulnerable according to IUCN Red List criteria.


Phytotaxa ◽  
2019 ◽  
Vol 407 (1) ◽  
pp. 59-70 ◽  
Author(s):  
YI TONG ◽  
DAI-KE TIAN ◽  
JIANG-PING SHU ◽  
YAN XIAO ◽  
BING-MOU WANG ◽  
...  

Begonia yizhouensis, a new species in Begonia sect. Coelocentrum (Begoniaceae) from Guangxi of China, is described and illustrated. Morphologically, it is similar to the adjacently distributed B. luochengensis, but clearly separated by its waxy leaves with glabrous or sometimes sparsely puberulous surfaces, larger variation in leaf color and maculation along the main veins, white to pinkish-white flowers and late flowering. Furthermore, molecular phylogenetic analysis indicated B. yizhouensis was a monophyletic lineage and was sister with B. luochengensis. The relationship of the new species and other similar species is also discussed. This new species is endemic to limestone hills in Guangxi and is assessed as “Endangered” (EN) according to the IUCN Red List Categories and Criteria. Additionally, morphological and molecular evidence for B. yishanensis not being synonymous with B. porteri is presented.


Zootaxa ◽  
2018 ◽  
Vol 4462 (3) ◽  
pp. 349
Author(s):  
ALAN CHANNING ◽  
FRANK WILLEMS

We describe a new species of Ptychadena from Mutinondo Wilderness in northern Zambia. It has rupicolous tadpoles that develop in a film of water. The species is distinguished on morphology, advertisement call and DNA sequences from other grass frogs and was found to be most closely related to P. broadleyi. It has no contrasting longitudinal bands on the posterior thigh, the foot is longer than half SVL, it has no light triangle on the snout, three phalanges of the fourth toe free of web and the snout has no skin folds. The species should be considered Near Threatened in terms of the IUCN Red List criteria given its limited extent of occurrence and population size. 


Zootaxa ◽  
2018 ◽  
Vol 4415 (3) ◽  
pp. 452 ◽  
Author(s):  
P. R. PUGH ◽  
C.W. DUNN ◽  
S.H.D. HADDOCK

A new species of calycophoran siphonophore, Tottonophyes enigmatica gen. nov, sp. nov., is described. It has a unique combination of traits, some shared with prayomorphs (including two rounded nectophores) and some with clausophyid diphyomorphs (the nectophores are dissimilar, with one slightly larger and slightly to the anterior of the other, and both possess a somatocyst). Molecular phylogenetic analyses indicate that the new species is the sister group to all other diphyomorphs. A new family, Tottonophyidae, is established for it. Its phylogenetic position and distinct morphology help clarify diphyomorph evolution. The function and homology of the nectophoral canals and somatocyst is also re-examined and further clarification is given to their nomenclature.


Phytotaxa ◽  
2014 ◽  
Vol 159 (4) ◽  
pp. 279 ◽  
Author(s):  
Jiaxiang Li ◽  
Xunlin Yu

A new species of Astragalus Linn. (Leguminosae) from Wuling Mountain of Hunan province, China, Astragalus wulingensis Jia X. Li & X. L. Yu sp. nov. is described, illustrated, and compared with its close relatives. It belongs to section Lotidium Bunge, subgen. Astragalus Bunge. The new species is endemic to Wuling Mountain in NW Hunan Province and has limited populations and vulnerable habitat. Astragalus wulingensis is assessed as Critically Endangered (CR B2c) according to IUCN Red List criteria.


Phytotaxa ◽  
2016 ◽  
Vol 244 (1) ◽  
pp. 45 ◽  
Author(s):  
CHUN LI ◽  
LI-HUA YANG ◽  
DAI-KE TIAN ◽  
YUE CHEN ◽  
RUI-JUAN WU ◽  
...  

Begonia leipingensis D. K. Tian, L. H. Yang & C. Li (2n = 30), a new species in Begonia sect. Coelocentrum from the limestone area of Guangxi, China. B. leipingensisis is easily distinguished from any other compound-leaved species in Begonia by its large variation in petiolule number and its unique spirally-arranged petiolule pattern, which has never been seen in Begoniaceae before and rarely seen even in other angiosperm taxa. Besides having non-overlapping flowering periods, it is clearly different from B. fangii, the most morphologically similar species in the same section and with the same chromosome number. In addition to its unique petiolule pattern, B. leipingensis has longer abaxial wings, shorter internodes, and usually larger leaves, leaflets and habit. Molecular phylogenetic analysis showed that B. leipingensis formed an independent lineage belonging to Sect. Coelocentrum. Morphological and phylogenetic evidence strongly supports this species as a new taxon in Sect. Coelocentrum of Begonia. B. leipingensis was assessed to be critically endangered based on criterion outlined by IUCN Red List Categories and Criteria.


Phytotaxa ◽  
2015 ◽  
Vol 192 (4) ◽  
pp. 290 ◽  
Author(s):  
Cleusa Vogel Ely ◽  
Ilsi Iob Boldrini ◽  
Sérgio Augusto de Loreto Bordignon

In this article we describe and illustrate Hypericum austrobrasiliense, a new species endemic to the grasslands of the Brazilian Atlantic Forest biome and restricted to Southern Brazil. This distinctive species is classified as Endangered based on IUCN Red List criteria.


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