A new species of Annonaceae, endemic to the limestone karst forests of Chiapas, Mexico

Area Of Occupancy ◽

AbstractBackground and Aims: In Mexico, the Neotropical genera of Annonaceae tribe Miliuseae, including Sapranthus, Stenanona and the Mexican endemic genus Tridimeris, are particularly diverse and many of their species are endemic to this country. This diversity is not fully documented and many new species have been discovered as a result of recent botanical explorations in southern Mexico. Here, we describe a new species of Stenanona.Methods: We collected a new species of Stenanona during field work in a little known karst forest area located in the highlands of Chiapas, Mexico. The new species was recognized using the unique combination of features through comparisons with morphologically similar species and literature review. We assessed its conservation status by calculating its extent of occurrence (EOO) and its area of occupancy (AOO) using the GeoCAT tool and applying the IUCN Red List Categories and criteria.Key results: A new species of Annonaceae, namely Stenanona morenoi, endemic to karstic forests of southern Mexico, is described and illustrated. According to the criteria established by the IUCN, it is possible to tentatively determine the species as Critically Endangered (CR B1ab (iii)).Conclusions: Based on its general floral morphology, S. morenoi is hypothesized to belong to subclade A of the Desmopsis-Stenanona clade. Within this lineage, S. morenoi shares several morphological features with S. migueliana, S. stenopetala and S. zoque.

A new species of Parasopubia (Orobanchaceae) from the southern Western Ghats, India

Anales del Jardín Botánico de Madrid ◽

10.3989/ajbm.2585 ◽

2021 ◽

Vol 78 (1) ◽

pp. e106

Author(s):

Divya Korappara Venugopal ◽

Santhosh Nampy ◽

Ayilliath Kuttiyeri Pradeep ◽

Dani Francis ◽

Vishnu Mohan ◽

...

Keyword(s):

New Species ◽

Western Ghats ◽

National Park ◽

Conservation Status ◽

Iucn Red List ◽

Red List ◽

Similar Species ◽

Southern Western Ghats ◽

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.

Echeandia cholulensis (Asparagaceae), a new species from central Mexico

Acta Botanica Mexicana ◽

10.21829/abm128.2021.1915 ◽

2021 ◽

Author(s):

Aarón Rodríguez ◽

Juan Pablo Ortiz Brunel

Keyword(s):

New Species ◽

Conservation Status ◽

Volcanic Belt ◽

Field Work ◽

Iucn Red List ◽

Morphological Description ◽

Central Mexico ◽

New Taxon ◽

Area Of Occupancy ◽

Background and Aims: The genus Echeandia (Asparagaceae) characterizes the Mexican geophyte flora. The group is exclusive of the Americas and includes 85 species. In Mexico, there are 74 species, of which 63 are endemic; however, the species richness is concentrated in the Mexican Transition Zone, including the Transmexican Volcanic Belt (TMVB). Here, we name and describe a new species of Echeandia found along the TMVB in the states of Puebla and Tlaxcala.Methods: Field work and herbarium revision led us to discover a new species of Echeandia. The morphological description and illustration were based on eight voucher specimens plus living plants from two populations. Moreover, we compared the morphology of the new taxon with that of E. michoacensis and E. robusta. Lastly, we assessed its conservation status by calculating its extent of occurrence (EOO) and its area of occupancy (AOO), using the GeoCAT tool and based on the IUCN Red List categories and criteria.Key results: Echeandia cholulensis is a new species from Mexico. The new taxon includes robust plants characterized by root-thickenings distant from the corm; lanceolate, undulate, and glaucous leaves; ascending flowers with white tepals; clavate and muricate filaments, and free anthers with longitudinal dehiscence. Until now, it is known from three populations in central Mexico in the states of Puebla and Tlaxcala.Conclusions: Along the TMVB, volcanism has created topographic and climatic variation favoring speciation and persistence. The discovery and morphological description of Echeandia cholulensis exemplifies this observation. Furthermore, botanical exploration and herbaria revisions might discover new species that would increase the great plant diversity of the TMVB.

A new species (Begonia giganticaulis) of Begoniaceae from southern Xizang (Tibet) of China

PhytoKeys ◽

10.3897/phytokeys.187.75854 ◽

2021 ◽

Vol 187 ◽

pp. 189-205

Author(s):

Dai-Ke Tian ◽

Wen-Guang Wang ◽

Li-Na Dong ◽

Yan Xiao ◽

Min-Min Zheng ◽

...

Keyword(s):

New Species ◽

Phylogenetic Analyses ◽

Conservation Status ◽

Female Flower ◽

Iucn Red List ◽

Red List ◽

Current Data ◽

Unique Shape ◽

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.

Anemopaegma kawense (Bignoniaceae), a new species from the Kaw Mountain (French Guiana), with notes on related species and a key to the genus in the Guianas

Plant Ecology and Evolution ◽

10.5091/plecevo.2021.1775 ◽

2021 ◽

Vol 154 (2) ◽

pp. 296-306

Author(s):

Olivier Lachenaud ◽

Fabiana Firetti ◽

Lúcia G. Lohmann

Keyword(s):

New Species ◽

French Guiana ◽

Conservation Status ◽

Iucn Red List ◽

Herbarium Specimens ◽

Similar Species ◽

Centre Of Diversity ◽

North Eastern ◽

The Guianas ◽

Background and aims – The genus Anemopaegma (Bignoniaceae) includes around 47 species and has its centre of diversity in Brazil. Here, we describe and illustrate a new species from French Guiana, Anemopaegma kawense, and compare it to the two most similar species, A. foetidum and A. granvillei. We further assess the conservation status of all three species.Material and methods – Morphological descriptions are based on herbarium specimens deposited at BM, BR, CAY, INPA, K, MO, P, SPF, and U, and, in the case of the newly described species, also on field observations. The conservation status assessments follow the IUCN Red List criteria.Key results – Anemopaegma kawense differs from both A. foetidum and A. granvillei by its densely villose twigs, longitudinally plicate leaflets with secondary veins not or hardly prominent below, and tertiary veins impressed below. It is further separated from A. foetidum by the leaflets that are villose below and the calyx that is entirely pubescent outside. On the other hand, A. kawense differs from A. granvillei by the densely lepidote outer surface of the corolla, shorter petiolules, leaflets with midrib impressed above, shorter bracts and bracteoles, inflorescence peduncle exceeding the rachis, and pedicels densely puberulous, not lepidote or only sparsely so at the apex. This species is endemic to the Kaw Mountain in north-eastern French Guiana, where it grows in low stunted forest on laterite; it is assessed as Endangered according to the IUCN criteria. New descriptions are provided for A. granvillei, which is newly reported from Suriname, and for A. foetidum, which is newly reported from French Guiana; these two species are assessed as Endangered and Least Concern, respectively. Lectotypes are designated for A. maguirei, which is here synonymised with A. foetidum, and for A. umbellatum, another synonym of that species. A key to the 12 species of Anemopaegma occurring in the Guianas is presented.

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

Phytotaxa ◽

10.11646/phytotaxa.407.1.9 ◽

2019 ◽

Vol 407 (1) ◽

pp. 59-70 ◽

Cited By ~ 1

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 ◽

Monophyletic Lineage ◽

Molecular Phylogenetic ◽

Relationship Of ◽

The Relationship ◽

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 ◽

10.11646/phytotaxa.177.1.2 ◽

2014 ◽

Vol 177 (1) ◽

pp. 26 ◽

Cited By ~ 5

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 ◽

Lowland Forests ◽

Distinguishing Features ◽

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 ◽

10.11646/phytotaxa.244.1.3 ◽

2016 ◽

Vol 244 (1) ◽

pp. 45 ◽

Cited By ~ 4

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 ◽

Molecular Phylogenetic ◽

Red List Categories ◽

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.

Spiradiclis karstana (Rubiaceae), a new species from Yunnan, China

PhytoKeys ◽

10.3897/phytokeys.117.28281 ◽

2019 ◽

Vol 117 ◽

pp. 1-8 ◽

Cited By ~ 1

Author(s):

Lei Wu ◽

Xiong Li ◽

Wen-Jian Liu ◽

Quan-Ru Liu

Keyword(s):

New Species ◽

Conservation Status ◽

Iucn Red List ◽

Red List ◽

Red List Categories ◽

First Time ◽

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.

Gravesia serratifolia (Melastomataceae: Sonerileae), a new species from Marojejy National Park, Madagascar

Phytotaxa ◽

10.11646/phytotaxa.391.2.4 ◽

2019 ◽

Vol 391 (2) ◽

pp. 115

Author(s):

FRANK ALMEDA ◽

HERITIANA RANARIVELO

Keyword(s):

New Species ◽

National Park ◽

Iucn Red List ◽

Red List ◽

Similar Species ◽

Conservation Assessment ◽

Red List Categories ◽

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.

A new rheophytic species of Syzygium (Myrtaceae) from the lower Kunene River of Angola and Namibia

Phytotaxa ◽

10.11646/phytotaxa.491.4.3 ◽

2021 ◽

Vol 491 (4) ◽

pp. 281-290

Author(s):

WESSEL SWANEPOEL ◽

VERA DE CAUWER ◽

ABRAHAM E. VAN WYK

Keyword(s):

New Species ◽

Iucn Red List ◽

Red List ◽

Similar Species ◽

Namib Desert ◽

Conservation Assessment ◽

International Boundary ◽

Red List Categories ◽

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.