scholarly journals Primulina papillosa (Gesneriaceae), a new species from limestone areas of Guangxi, China

Author(s):  
Fang Wen ◽  
Zi-Bing Xin ◽  
Wei-Chuen Chou ◽  
Stephen Maciejewski ◽  
Long-Fei Fu

Primulina papillosa Z.B. Xin, W.C. Chou & F. Wen, a new species from limestone areas of Guangxi, China, is described and illustrated. It 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.

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.


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 ◽  
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 ◽  
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.


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.


PhytoKeys ◽  
2020 ◽  
Vol 159 ◽  
pp. 61-69
Author(s):  
Tao Peng ◽  
Bo Pan ◽  
Stephen Maciejewski ◽  
Fang Wen

The limestone regions of Yunnan-Guangxi-Guizhou in southern and southwestern China are regarded as some of biodiversity’s hotspots for China’s Gesneriaceae where numerous rare new species of Primulina have been, or are being, described over the past two decades. Primulina flexusa, a new lithophytic species of Gesneriaceae from a limestone hill in a Karst area, from Guizhou, China, is described here with color photographs. It is similar to P. curvituba, but can be easily distinguished by a combination of characteristics, especially in the shape and length of its capsule. We found only one population with approximately 100 mature individuals at the type locality. This new species is provisionally assessed as Critically Endangered [CR C1] by using IUCN criteria.


PhytoKeys ◽  
2018 ◽  
Vol 110 ◽  
pp. 1-8
Author(s):  
Gildas Gâteblé ◽  
Jérôme Munzinger

A new species, Acropogonhorarius Gâteblé & Munzinger, sp. nov. (Malvaceae, Sterculioideae), is described from New Caledonia. It is known only from two very small subpopulations in the rainforests of the Petchécara Pass between Thio and Canala, in the southeast of Grande-Terre, New Caledonia’s main island. This shrub to small tree has hastate leaves and minute sessile tubular whitish-yellowish flowers and is strikingly different from all other members of the genus. The type locality is geologically complex and located within one of only four amphibolite lenses known in New Caledonia. A line drawing and colour photos are provided for the new species, along with a preliminary risk of extinction assessment, which indicates that the species is Critically Endangered.


Phytotaxa ◽  
2017 ◽  
Vol 311 (2) ◽  
pp. 168
Author(s):  
ROBERT DOUGLAS STONE ◽  
NTOMBIPHUMILE PERCEVERENCE TENZA

Described and illustrated is Warneckea albiflora R.D. Stone & N.P. Tenza, another localized endemic of coastal dry forest near Quiterajo in Mozambique’s Cabo Delgado Province. In Flora Zambesiaca the new species would key to Memecylon sansibaricum Taub. [≡Warneckea sansibarica (Taub.) Jacq.-Fél.], but is distinguished by its elliptic-lanceolate, attenuate–acuminate leaves and white flowers borne on pedicels 3.5–4 mm long (versus leaves elliptic and rounded to shortly and obtusely acuminate, pedicels 6–15 mm long, and flowers pale blue to deep blue in Warneckea  sansibarica). Because of its evidently very limited occurrence as well as on-going anthropogenic threats, Warneckea albiflora is provisionally assessed as Critically Endangered (CR) B1ab(iii) according to IUCN criteria. A key is provided to the Mozambican species of Warneckea.


2018 ◽  
Vol 76 (1) ◽  
pp. 45-54 ◽  
Author(s):  
K. Souvannakhoummane ◽  
P. Souladeth ◽  
S. Tagane ◽  
C.-J. Yang ◽  
T. Yahara

Didymocarpus middletonii Souvann., Soulad. & Tagane, a new species of Gesneriaceae from Nam Kading National Protected Area, is described and illustrated. The new species is morphologically similar to Didymocarpus brevicalyx, D. formosus and D. puhoatensis but distinguished from the three by its fewer-flowered inflorescence, longer pedicel, and urceolate and multicellular eglandular hairy calyx. Based on the latest IUCN criteria, Didymocarpus middletonii is proposed to be Critically Endangered (CR). Our record of Didymocarpus represents a new genus record for the flora of Laos.


Phytotaxa ◽  
2015 ◽  
Vol 221 (2) ◽  
pp. 157 ◽  
Author(s):  
Ivón M. Ramírez ◽  
Claudia Hornung-Leoni ◽  
Manuel González ◽  
Jacinto Treviño-Carreon

We propose that two populations previously referred to Hechtia epigyna, from the Mexican state of Hidalgo, represent a new species. Plants from the Hidalgo populations share the inferior ovary with Hechtia epigyna, an unusual trait in the genus, but they differ in their growth pattern (central vs. lateral inflorescence), characters of the adaxial foliar surface, petal color, and fruit position during dehiscence. We also provide a clarification on the typification of Hechtia epigyna. An assessment of the conservation status of the new species, Hechtia deceptrix following IUCN criteria resulted as CR (Critically Endangered).


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