scholarly journals Calliandra mayana (Leguminosae, Mimosoideae), a new narrowly endemic species from Campeche, Mexico

Phytotaxa ◽  
2017 ◽  
Vol 307 (4) ◽  
pp. 278
Author(s):  
HÉCTOR M. M. HERNÁNDEZ ◽  
CARLOS GÓMEZ-HINOSTROSA

A new species of Calliandra (Leguminosae, Mimosoideae, tribe Ingeae) from a restricted locality of Campeche, Mexico is herein described and illustrated. The species appears to be closely related to C. molinae, a species from Honduras, El Salvador and Nicaragua, from which it may be distinguished by being allopatric, and by a more limited development of suberose bark in stems and branches, comparatively smaller leaflets, consistently glabrous leaflets and corollas, and by the scarcely villous pods. Calliandra mayana appears to be restricted to an extremely small seasonally flooded savannah surrounded by tropical deciduous forest and, based on IUCN criteria, it is provisionally considered Critically endangered.

Phytotaxa ◽  
2019 ◽  
Vol 423 (2) ◽  
pp. 105-110
Author(s):  
LUÍS ADRIANO FUNEZ ◽  
JULIO CESAR JARAMILLO ◽  
ELISANDRO RICARDO DRECHSLER-SANTOS

We describe here Begonia medeiroii, a narrow endemic species from the Atlantic Rainforest. The conservation status of this species was assessed as critically endangered according to IUCN criteria. This species resembles to B. catharinensis and B. hirtella in some characteristics, differing among other features due the presence of adventitious vegetative buds on the adaxial surface of the leaves.


Phytotaxa ◽  
2016 ◽  
Vol 255 (3) ◽  
pp. 281 ◽  
Author(s):  
DIEGO TAVARES IGLESIAS ◽  
VALQUÍRIA FERREIRA DUTRA ◽  
RENATO GOLDENBERG

Behuria mestrealvarensis (Melastomataceae) from the state of Espírito Santo, Brazil, is described, illustrated and compared with B. capixaba, the species most similar to it. Behuria mestrealvarensis differs from B. capixaba by the glabrous petioles and hypanthia, by the solitary flowers or these in simple or compound triads up to 7 flowers, elliptic bracteoles almost the same size of the pedicel and hypanthium, sepals with eciliate margins and ovary apex with trichomes up to 0.5 mm. It occurs in a single locality, on an isolated, ca. 800m elev. inselberg. Due to its restricted occupancy area, fragmented landscape and poor habitat quality, this species must be considered as Critically Endangered according to IUCN criteria.


Phytotaxa ◽  
2020 ◽  
Vol 460 (1) ◽  
pp. 89-96
Author(s):  
LUCAS F. BACCI ◽  
DIEGO TAVARES IGLESIAS ◽  
RENATO GOLDENBERG

We describe here Bertolonia lucernula, a new endemic species from the state of Espírito Santo, Brazil. It is only known from one locality, the “Área de Proteção Ambiental Mestre Álvaro”, in the municipality of Serra. The new species can be recognized by the branches and petioles covered with sessile and short-stalked glands and scattered unbranched trichomes, flat leaf blade surfaces covered only with sessile and short-stalked glands, small flowers with a widely campanulate hypanthium covered with the same trichomes as the petioles, calyx with membranaceous, truncate sepals, and short, triangular external teeth, asymmetric and obovate petals, with the apex covered with sessile and short-stalked glands on the adaxial surface. According to IUCN criteria, Bertolonia lucernula should be classified as Critically Endangered (CR).


Phytotaxa ◽  
2020 ◽  
Vol 440 (3) ◽  
pp. 232-238
Author(s):  
RAGHUVAR TIWARY ◽  
HARSH SINGH ◽  
DIBYENDU ADHIKARI ◽  
PREM PRAKASH SINGH ◽  
SAROJ KANTA BARIK

Aconitum haridasanii, a new species from Tawang, India, is described and illustrated. This new species differs from its allied species Aconitum spicatum in having a taller and flexuous stem, pale yellow to whitish flowers in a shorter few-flowered inflorescence, densely pubescent shorter pedicels, bract shorter than pedicel, shorter sepals, longer petals, and only 3 carpels. Threat assessment was undertaken for the species following IUCN criteria (IUCN 2017 version 13) and the species was classified as Critically Endangered.


2021 ◽  
pp. 1-11
Author(s):  
Juana Durán-Luz ◽  
Sergio Ibáñez-Bernal ◽  
Guillermo Hugo Omad

Neurosystasis Satchell is newly recorded in Mexico by means of the description of a new species. Specimens captured in a tropical deciduous forest in southern Puebla, central Mexico, were examined and determined as a species new to science. The male and female are described based on morphological characteristics. Neurosystasis longistylis sp. nov. is similar in appearance to Neurosystasis saltenia (Omad, Mangudo & Gleiser, 2015), but is readily distinguished based on characters of the head, wing, and male genitalia. In both species, R2+3 is attached to vein R4, the wing membrane is infuscate with dark spots on vein apices, and lacks sensory organs near the apex of Sc, characters not present in other species of Neurosystasis, and for that reasons we proposed the recovery of Chuspilepia from its synonym and validate it as a subgenus of Neurosystasis to include both continental species.


2020 ◽  
Vol 13 (1) ◽  

A new endemic species, Nepenthes cabanae, belonging to sect. Insignes is described from the Mt. Pantaron range of central Mindanao. The species is assessed as Critically Endangered. This discovery brings the number of Nepenthes species in this mountain range to eight. Mt. Pantaron is currently not a protected area, but the diversity of Nepenthes taxa suggests concerted efforts should be made to develop a conservation strategy to preserve and protect the area.


2021 ◽  
Author(s):  
Nicolás Lavandero ◽  
Ludovica Santilli ◽  
Maria Fernanda Pérez

A new species of Calceolaria endemic to central Chile is described. A comparison with morphologically similar species is made, and a key as well as detailed images to differentiate them is provided. The species is only known from the Natural Sanctuary Cerro El Roble, which is part of the coastal mountain range of central Chile and can be considered as  Critically Endangered (CR) under the IUCN categories and criteria.


PhytoKeys ◽  
2021 ◽  
Vol 177 ◽  
pp. 55-61
Author(s):  
Zi-Bing Xin ◽  
Wei-Chuen Chou ◽  
Stephen Maciejewski ◽  
Long-Fei Fu ◽  
Fang Wen

Primulina papillosa Z.B. Xin, W.C. Chou & F. Wen, a new species from limestone areas of Guangxi, China, is described and illustrated here. It morphologically resembles P. linearifolia (W.T. Wang) Yin Z. Wang and P. pseudolinearifolia W.B. Xu & K.F. Chung, but can be easily distinguished by some combined characters, especially its leaf blades densely papillose-hispid. We found only one population at the type locality with no more than 200 individuals, so that this new species is provisionally assessed as Critically Endangered (CR) using IUCN Criteria.


2021 ◽  
Vol 46 (1) ◽  
pp. 24-33
Author(s):  
Livia Echternacht ◽  
Mariane da Silva Freitas ◽  
Marcelo Trovó

Abstract—Three new species of Eriocaulaceae, endemic to the Serra da Canastra in Minas Gerais state, are described. Paepalanthus petraeus is assigned to P. ser. Paepalanthus, differing within the series by its thickened stem accumulating leaf sheaths, linear leaves, and numerous scapes shorter or equaling the leaf height and bearing capitula with brown involucral bracts. Paepalanthus sinuosus belongs to P. subsect. Polyactis and is distinguished by few scapes in lax fascicles, more than twice as long as the leaves, which are patent to slightly recurved, and light brown involucral bracts with acute apex. Syngonanthus culcitosus, within S. sect. Syngonanthus, is unique due to its elongate and branched stem forming dense mats, simple inflorescences, cream-colored involucral bracts equaling the length of the floral disc, and gynoecium with nectariferous appendages. Comparisons with the most similar species are provided for each new taxon. Maps, photographs, and illustrations are presented, together with comments on phenology, distribution, habitat, and morphology. Paepalanthus petraeus and P. sinuosus are likely to be assessed as Critically Endangered, and S. culcitosus as Vulnerable, according to IUCN criteria.


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