Begonia yizhouensis, a new species in Begonia sect. Coelocentrum (Begoniaceae) from Guangxi, China

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.

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 ◽  
2021 ◽  
Vol 527 (4) ◽  
pp. 266-274
Author(s):  
XIN-XIN FENG ◽  
ZHI-XIAN LIU ◽  
DAN WEI ◽  
REN-KUN LI ◽  
YU-NI HUANG ◽  
...  

Begonia fenshuilingensis X.X.Feng, R.K.Li & Z.X.Liu, a new species in Begonia sect. Platycentrum (Klotzsch) A.DC. (Begoniaceae) from southeastern Yunnan, China, is here described and illustrated. It morphologically resembles B. dryadis and B. daweishanensis, but differs by its fleshy trigonous-ellipsoid capsules without wings. Molecular phylogenetic analysis of ITS sequence data supports the new species as monophyletic, and distinct from the two similar species. Due to its limited distribution, we consider the new taxon as “Vulnerable D2” (VU D2) according to the IUCN Red List Categories and Criteria.


PhytoKeys ◽  
2021 ◽  
Vol 182 ◽  
pp. 113-124
Author(s):  
Xin-Xin Feng ◽  
Yan Xiao ◽  
Zhi-Xian Liu ◽  
Ren-Kun Li ◽  
Dan Wei ◽  
...  

Begonia pseudoedulis, a new species in Begonia sect. Platycentrum (Klotzsch) A.DC. (Begoniaceae) from southern Guangxi of China, is here described and illustrated. It morphologically resembles B. edulis H.Lév. and B. dielsiana E.Pritz. ex Diels but differs easily by its hairy petioles and inflorescences, and red hispidulous flower tepals, ovary and capsules. The molecular phylogenetic analysis based on ITS supported that the new species was a monophyletic lineage, separating from both B. dielsiana and B. edulis. Due to its isolated distribution with several small populations, which are possibly disturbed by human activities, the species is considered as “Near Threatened” (NT) according to the IUCN Red List Categories and Criteria.


Phytotaxa ◽  
2019 ◽  
Vol 391 (2) ◽  
pp. 115
Author(s):  
FRANK ALMEDA ◽  
HERITIANA RANARIVELO

Gravesia serratifolia, a new species from upper elevations of Marojejy National Park in northeastern Madagascar, is herein described, illustrated, mapped, and compared with similar species. It is readily characterized by its sparingly branched habit, leaf blades coarsely serrate with a moderate to sparse lepidote indumentum on both surfaces, inflorescence of few-flowered dichasia, calyx obsolete or evident as depressed truncate undulations with prominent calyx teeth that are laterally compressed when fresh, filaments with rusty-brown glandlike indumentum, and dorso-basal staminal appendages linear-oblong and widely spreading to coiled. A conservation assessment of Vulnerable is recommended for this species based on IUCN Red List Categories and Criteria.


Phytotaxa ◽  
2021 ◽  
Vol 491 (4) ◽  
pp. 281-290
Author(s):  
WESSEL SWANEPOEL ◽  
VERA DE CAUWER ◽  
ABRAHAM E. VAN WYK

Syzygium kuneneense, here described as a new species, is known only from the northern part of the Namib Desert in the Kaokoveld Centre of Endemism, southwestern Angola and adjacent northwestern Namibia. These rheophytic shrubs or small trees grow among rocks on the floodplain and banks of the lower Kunene River on the international boundary between Angola and Namibia. Diagnostic characters for Syzygium kuneneense include the oblanceolate or narrowly elliptic leaves, dense flower heads and the pedicellate flowers. A comparison of some of the more prominent morphological features to differentiate between S. kuneneense and the morphologically most similar species, S. guineense, is provided. Based on IUCN Red List categories and criteria, a conservation assessment of Vulnerable (VU D1) is recommended for the new species.


PhytoKeys ◽  
2021 ◽  
Vol 181 ◽  
pp. 79-93
Author(s):  
Tetsukazu Yahara ◽  
Shun K. Hirota ◽  
Kengo Fuse ◽  
Hiroyuki Sato ◽  
Shuichiro Tagane ◽  
...  

Molecular phylogenetic studies of Hosta pulchella (Asparagaceae) and its relatives, which are native to Japan, have been conducted and resulted in a highly resolved phylogeny. Specifically, the relationship of H. pulchella to H. alata Hatusima, nom. nud. is investigated. These data include genome-wide SNPs obtained through conducting multiplexed ISSR genotyping by sequencing (MIG-seq). Based on these phylogenetic results, morphological observations, distribution, and differences in flowering periods of H. alata collections sympatric with H. pulchella, we find the two species closely related, but distinct. As such, we formally describe Hosta alatasp. nov. from the Oita Prefecture of Kyushu island, southwestern Japan.


2021 ◽  
Vol 78 (1) ◽  
pp. e106
Author(s):  
Divya Korappara Venugopal ◽  
Santhosh Nampy ◽  
Ayilliath Kuttiyeri Pradeep ◽  
Dani Francis ◽  
Vishnu Mohan ◽  
...  

Parasopubia raghavendrae, a new species of Orobanchaceae is described from the southern Western Ghats of Kerala. It resembles P. delphinifolia and P. hofmannii var. hofmannii by its habit, shape, colour and hairiness of corolla lobes but differs by length of calyx tube, hairiness of staminal filaments and stomium, and shape and ornamentation of seeds. Parasopubia raghavendrae is hitherto known only from the type locality Mathikettan Shola National Park in Idukki district, Kerala. Detailed description of the new species along with colour photographs and comparison with its closely similar species are given. We also assessed provisionally the conservation status of the new species as Critically Endangered (CR) according to IUCN Red List Categories and Criteria.


Phytotaxa ◽  
2021 ◽  
Vol 478 (2) ◽  
pp. 216-224
Author(s):  
GANG-TAO WANG ◽  
FANG-PU LIU ◽  
GUO-BIN JIANG ◽  
YING ZHANG ◽  
YU-QIANG CHEN ◽  
...  

Gyrocheilos taishanense G.T. Wang, Yu Q. Chen & R.J. Wang (Gesneriaceae) from south China is described and illustrated with photographs. It is morphologically similar to G. microtrichum W.T.Wang, but it is distinguished by its glabrous or sparsely hairy pedicels, zygomorphic calyx with hairs in unequal length, and slightly bilobed adaxial corolla lips. Molecular phylogenetic analysis based on nuclear ITS and plastid trnL-F sequences strongly supported this new species as sister to a clade comprising the previously described Gyrocheilos species (100% posterior probability and bootstrap support). The new species is evaluated here as Least Concern (LC) according to the IUCN Red List Categories and Criteria.


2014 ◽  
Vol 21 (2) ◽  
pp. 167-173 ◽  
Author(s):  
S. Karuppusamy ◽  
M. Ajmal Ali ◽  
K. M. Rajasekaran ◽  
Joongku Lee ◽  
Soo-Yong Kim ◽  
...  

Hydrocotyle kollimalayensis, a new species is described and illustrated from Kolli hills of South Eastern Ghats, Tamil Nadu, India. The new species is morphologically closer to H. sibthorpioides, but differs from the latter by its filiform stem, glabrous peduncle, shorter petiole and narrower flowers. The most prominent features of the new species Hydrocotyle kollimalayensis are: stem filiform with silky setaceous hairs; leaves sparsely hirsute above and dense below, 5-lobed; flowers 6-12 per inflorescence with glabrous peduncle; and fruits ellipsoidal with 3 obscure ribs. A key to distinguish the new species from other Hydrocotyle species of Tamil Nadu, India is provided. We also inferred the relationship of H. kollimalayensis with allied species using molecular phylogenetic analyses based on nrDNA ITS sequence data.DOI: http://dx.doi.org/10.3329/bjpt.v21i2.21356Bangladesh J. Plant Taxon. 21(2): 167-173, 2014 (December)


Phytotaxa ◽  
2020 ◽  
Vol 428 (1) ◽  
pp. 43-50
Author(s):  
YING ZHANG ◽  
GUO-BIN JIANG ◽  
RUI-JIANG WANG

A new species, Dimetia brevipetiolata R. J. Wang, from Guangxi Zhuang Autonomous Region, China, is described and photographed. Morphologically, it is similar to D. scandens and D. ampliflora with respect to their terete stem, lanceolate and thick papery leaves and compound-cymose inflorescences, but differs in prostrate habit, subsessile leaves, rounded leaf base, nearly glabrous corolla, and indehiscent capsules. The molecular phylogenetic analysis revealed that D. brevipetiolata was embedded in the Dimetia clade and closely related to D. auricularia. It is evaluated as Least Concern according to IUCN Red List Categories and Criteria.


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