A taxonomic revision of Angraecum section Dolabrifolia (Orchidaceae, Angraecinae), with the description of a new species from Gabon

Phytotaxa ◽  
2016 ◽  
Vol 280 (2) ◽  
pp. 81 ◽  
Author(s):  
MURIELLE SIMO-DROISSART ◽  
BONAVENTURE SONKÉ ◽  
VINCENT DROISSART ◽  
DANIEL GEERINCK ◽  
PORTER P. LOWRY II ◽  
...  
Keyword(s):  
New Species ◽  
Central Africa ◽  
Taxonomic Revision ◽  
Iucn Red List ◽  
Distribution Maps ◽  
Line Drawings ◽  
Iucn Red List Categories ◽  
Molecular Phylogenetic ◽  
Floral Characters ◽  
A New Species

Despite a paucity of material available from continental Africa, previous morphological and molecular phylogenetic studies have suggested that Angraecum, the largest genus of the angraecoid orchids, is polyphyletic. A recent study based on broad sampling from the region confirmed the monophyly of section Dolabrifolia and a clear delimitation of four of its five members, one of which represents a new species. Based on these results, a comprehensive taxonomic revision of Angraecum sect. Dolabrifolia is presented here. It includes an identification key and a detailed description of each species, along with color photographs, distribution maps, information on habitat and phenology, and a preliminary risk of extinction assessment according to the IUCN Red List categories and criteria. Species richness in the section is highest in Atlantic Central Africa and around the Albertine Rift. The new species, A. biteaui, is described and illustrated with line drawings. It most closely resembles A. aporoides in general aspect but differs in both foliar and floral characters, and is only known from lowland forests in Gabon.

Synoptic revision of the genus Cyrtorchis Schltr. (Angraecinae, Orchidaceae) in Central Africa, with the description of a new species restricted to submontane vegetation

Phytotaxa ◽  
2016 ◽  
Vol 267 (3) ◽  
pp. 165
Author(s):  
LAURA AZANDI ◽  
TARIQ STEVART ◽  
BONAVENTURE SONKÉ ◽  
MURIELLE SIMO-DROISSART ◽  
MARIE-LOUISE AVANA ◽  
...  
Keyword(s):  
New Species ◽  
New Records ◽  
Central Africa ◽  
Taxonomic Revision ◽  
Detailed Examination ◽  
Iucn Red List ◽  
Herbarium Specimens ◽  
Iucn Red List Categories ◽  
One New Species ◽  
A New Species

As a preliminary step to the taxonomic revision of the genus Cyrtorchis, a synoptic revision of the species occurring in Central Africa was undertaken. Based on a detailed examination of 1,039 herbarium specimens, including nomenclatural types, we have recognized 14 species in Central Africa (one of which is divided into two subspecies), including one new species that the study brought to light, described here as Cyrtorchis submontana. The new species closely resembles C. guillaumetii and C. brownii in general aspect, but differs from them in having thinner, small elliptic leaves and shorter, fewer-flowered, more lax inflorescences with shorter bracts. The species is restricted to submontane vegetation of Central Africa and is assessed as Endangered following the IUCN Red List Categories and Criteria. Cyrtorchis latibracteata and C. subcylindrifolia are lectotypified, and the latter is placed as a synonym under C. henriquesiana. Many new records are reported, and for each taxon the distribution, habitat and ecology are given. An identification key for the Central African taxa is also provided.

A new species of Trembleya (Melastomataceae: Microlicieae) with notes on leaf anatomy and generic circumscription

Phytotaxa ◽  
2019 ◽  
Vol 391 (5) ◽  
pp. 289 ◽  
Author(s):  
RICARDO PACIFICO ◽  
FRANK ALMEDA ◽  
AMANDA APARECIDA DO CARMO ◽  
KARINA FIDANZA
Keyword(s):  
New Species ◽  
Conservation Status ◽  
Iucn Red List ◽  
Conservation Assessment ◽  
Sem Images ◽  
Distribution Maps ◽  
Line Drawings ◽  
Iucn Red List Categories ◽  
Leaf Anatomical Structure ◽  
A New Species

A new species of Trembleya that was first recognized by Auguste François Marie Glaziou is described. Line drawings, photographs, descriptions of the leaf anatomical structure, SEM images, distribution maps, conservation status, and comments on the generic circumscription of Trembleya are provided. The new species appears to be endemic to the Chapada dos Veadeiros in Goiás, Brazil. It is characterized by its oblong-lanceolate leaf blades (1.4–4.5 × 0.3–0.9 cm) that are papyraceous, 3–5-nerved from the base and glandular-punctate on both surfaces, tertiary veins not evident, well-developed inflorescences, flowers with subisomorphic stamens that are completely yellow and ovaries with 3(–4) locules. A conservation assessment of Endangered (EN) is recommended for this species based on IUCN Red List Categories and Criteria.

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 ◽  
...  
Keyword(s):  
New Species ◽  
Iucn Red List ◽  
Molecular Evidence ◽  
Similar Species ◽  
Iucn Red List Categories ◽  
Monophyletic Lineage ◽  
Molecular Phylogenetic ◽  
Relationship Of ◽  
The Relationship ◽  
A New Species

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.

Taxonomy of Atlantic Central African orchids 3. A new species of Bulbophyllum Thouars (Orchidaceae) from the Monts de Cristal, Gabon

Phytotaxa ◽  
2014 ◽  
Vol 177 (1) ◽  
pp. 26 ◽  
Author(s):  
Tariq Stévart ◽  
Jean Philippe Biteau ◽  
Valérie Cawoy ◽  
Vincent Droissart
Keyword(s):  
New Species ◽  
Conservation Status ◽  
Leaf Shape ◽  
Central Africa ◽  
Iucn Red List ◽  
Preliminary Assessment ◽  
Iucn Red List Categories ◽  
Lowland Forests ◽  
Distinguishing Features ◽  
A New Species

Two specimens of an apparently new Bulbophylum species were found in the Monts de Cristal, Gabon. They have a unique leaf shape among the species of this genus in Continental Africa. The flower shares the general morphology of Bulbophyllum saltatorium, one of the most common members of Bulbophyllum in Central Africa. Eight other taxa of the Continental African Bulbophyllum possess unifoliate pseudobulbs and long hairs on the lip. Comparison with them indicates that the new collections from Gabon represent a distinctive species, not yet known in the genus. We describe it here as Bulbophyllum pauwelsianum. The distinguishing features of the species include its leaves, which are pendant, coriaceous, linear, semiterete and v-shaped in transverse section, and its sepals, which possess relatively long hairs on their margins. A table of the taxonomic treatments of the nine Continental African Bulbophyllum taxa considered here is included. A taxonomic key and a table of the diagnostic characters of these nine taxa are given to facilitate identification. The new species is restricted to lowland forests of the Monts de Cristal in Gabon. A preliminary assessment of the conservation status, using the IUCN Red List Categories and Criteria is provided.

Begonia leipingensis (Begoniaceae), a new compound-leaved species with unique petiolule pattern from Guangxi of China

Phytotaxa ◽  
2016 ◽  
Vol 244 (1) ◽  
pp. 45 ◽  
Author(s):  
CHUN LI ◽  
LI-HUA YANG ◽  
DAI-KE TIAN ◽  
YUE CHEN ◽  
RUI-JUAN WU ◽  
...  
Keyword(s):  
Phylogenetic Analysis ◽  
New Species ◽  
Iucn Red List ◽  
Red List ◽  
Similar Species ◽  
New Taxon ◽  
Iucn Red List Categories ◽  
Molecular Phylogenetic ◽  
Red List Categories ◽  
A New Species

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.

Begonia fenshuilingensis, a new species in Begonia sect. Platycentrum (Begoniaceae) from southeastern Yunnan, China

Phytotaxa ◽  
2021 ◽  
Vol 527 (4) ◽  
pp. 266-274
Author(s):  
XIN-XIN FENG ◽  
ZHI-XIAN LIU ◽  
DAN WEI ◽  
REN-KUN LI ◽  
YU-NI HUANG ◽  
...  
Keyword(s):  
New Species ◽  
Sequence Data ◽  
Iucn Red List ◽  
Red List ◽  
Its Sequence ◽  
Similar Species ◽  
New Taxon ◽  
Iucn Red List Categories ◽  
Molecular Phylogenetic ◽  
A New Species

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.

Gyrocheilos taishanense: A new species of Gesneriaceae from Guangdong, China

Phytotaxa ◽  
2021 ◽  
Vol 478 (2) ◽  
pp. 216-224
Author(s):  
GANG-TAO WANG ◽  
FANG-PU LIU ◽  
GUO-BIN JIANG ◽  
YING ZHANG ◽  
YU-QIANG CHEN ◽  
...  
Keyword(s):  
New Species ◽  
Posterior Probability ◽  
Iucn Red List ◽  
Red List ◽  
Bootstrap Support ◽  
Iucn Red List Categories ◽  
Molecular Phylogenetic ◽  
Nuclear Its ◽  
A New Species ◽  
Unequal Length

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.

Dimetia brevipetiolata (Spermacoceae: Rubiaceae): A new species from Guangxi, China

Phytotaxa ◽  
2020 ◽  
Vol 428 (1) ◽  
pp. 43-50
Author(s):  
YING ZHANG ◽  
GUO-BIN JIANG ◽  
RUI-JIANG WANG
Keyword(s):  
Phylogenetic Analysis ◽  
New Species ◽  
Iucn Red List ◽  
Red List ◽  
Leaf Base ◽  
Autonomous Region ◽  
Iucn Red List Categories ◽  
Molecular Phylogenetic ◽  
Red List Categories ◽  
A New Species

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.

scholarly journals Brownlowia latifiana (Malvaceae-Brownlowioideae), a new species from Terengganu, Peninsular Malaysia

Phytotaxa ◽  
2017 ◽  
Vol 298 (2) ◽  
pp. 134
Author(s):  
R. C. K. CHUNG ◽  
E. SOEPADMO
Keyword(s):  
New Species ◽  
Morphometric Analysis ◽  
Taxonomic Revision ◽  
Morphological Characters ◽  
Iucn Red List ◽  
Peninsular Malaysia ◽  
Conservation Assessment ◽  
Iucn Red List Categories ◽  
The Status ◽  
A New Species

A new species, Brownlowia latifiana (Malvaceae-Brownlowioideae), endemic to Terengganu, Peninsular Malaysia, is described and illustrated. This new species has most of its morphological characters that are related to those of the genus Jarandersonia. Therefore, a standard morphological taxonomic revision and morphometric analysis were carried out to assess the status of Brownlowia latifiana. Results of the morphometric analysis based on morphological characters showed that Brownlowia latifiana is embedded within the clades of Brownlowia but distanced from the clades Jarandersonia. Brownlowia formed a distinct clade in the clustering tree well separated from the Jarandersonia. A distribution map and a conservation assessment using the IUCN Red List categories and criteria are provided.

Taxonomy of Atlantic Central African orchids 4. A new species of Tridactyle (Vandeae, Epidendroideae, Orchidaceae) from Gabon and Equatorial Guinea

Phytotaxa ◽  
2015 ◽  
Vol 212 (2) ◽  
pp. 141 ◽  
Author(s):  
Tania D'haijère ◽  
Sophie Leguil ◽  
Pierre Meerts ◽  
Tariq Stévart
Keyword(s):  
New Species ◽  
Conservation Status ◽  
Leaf Shape ◽  
Central Africa ◽  
Iucn Red List ◽  
Red List ◽  
Equatorial Guinea ◽  
Preliminary Assessment ◽  
Iucn Red List Categories ◽  
A New Species

Nine plants specimens of an apparently new Tridactyle species were collected in Gabon and Equatorial Guinea. They have an erect habit and a particular leaf shape which makes the species unique in the genus. The flowers and inflorescences share the general morphology of Tridactyle tridactylites, one of the most frequently collected species of Tridactyle in Central Africa. Four other Tridactyle taxa possess a 3 to 6 cm long inflorescence and a labellum with entire side lobes, and one species, Tridactyle stevartiana, has leaves of similar width and length. We here show that these new 9 specimens represent a new species, described as Tridactyle minutifolia. The diagnostic traits include linear thin leaves, and erect habit. Interestingly, many specimens of Tridactyle minutifolia lack spur; this phenomenon is sometimes found in orchids growing in an environment where their pollinators are absent. A table of the diagnostic characters of the six Continental African Tridactyle taxa considered here is included. A preliminary assessment of the conservation status of T. minutifolia, using the IUCN Red List Categories and Criteria is provided.

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