Eight new species of the fern genus Polystichum (subg. Haplopolystichum; Dryopteridaceae) from limestone caves in Guizhou, China

Phytotaxa ◽  
2019 ◽  
Vol 404 (6) ◽  
pp. 209
Author(s):  
LI-BING ZHANG ◽  
YI-FAN DUAN ◽  
MATTHIAS KROPF
Keyword(s):  
New Species ◽  
Iucn Red List ◽  
Red List ◽  
Critically Endangered ◽  
Guizhou Province ◽  
Southwestern China ◽  
Fern Species ◽  
Iucn Red List Criteria

Eight new fern species of Polystichum subg. Haplopolystichum sect. Haplopolystichum (Dryopteridaceae) are described and illustrated from Guizhou Province, southwestern China. These eight species include P. anshunense, P. asperrimum, P. confusum, P. kropfii, P. libingii, P. macrodon, P. perditum, and P. yifanii. Each of these eight species was discovered from only 1–2 limestone caves showing extremely narrow distributions. Therefore, all are classified as Critically Endangered (CR) following IUCN Red List criteria.

Eight new species of Polystichum (subg. Haplopolystichum; Dryopteridaceae) from limestone caves in Guangdong and Yunnan, China, with reference to species diversity in the karst terrains at high elevations in subtropical areas

Phytotaxa ◽  
2018 ◽  
Vol 365 (2) ◽  
pp. 145 ◽  
Author(s):  
MENG-QI HAN ◽  
YAN LIU ◽  
LI-BING ZHANG
Keyword(s):  
New Species ◽  
Species Diversity ◽  
Iucn Red List ◽  
Red List ◽  
Critically Endangered ◽  
Southwestern China ◽  
Fern Species ◽  
Iucn Red List Criteria ◽  
Karst Terrains ◽  
High Elevations

Eight new fern species of Polystichum subg. Haplopolystichum (Dryopteridaceae) are described and illustrated from Guangdong and Yunnan provinces, southern and southwestern China, respectively. These eight species include P. deltatum, P. gejiuense, P. malipoense, P. oblongipinnarum, P. pingbianense, P. rectum, and P. superum from Yunnan, and P. hanmengqii from Guangdong. Four of the eight species are described from high elevations (around 2000 m) demonstrating that the limestone areas at high elevations in subtropical areas are species-rich and deserve special conservation attention. All eight species are so far known only from single caves; they are all classified as Critically Endangered (CR) following IUCN Red List criteria.

Polystichum dongchuanense and P. menglaense (subg. Haplopolystichum; Dryopteridaceae), two new ferns from Yunnan, China

Phytotaxa ◽  
2021 ◽  
Vol 479 (1) ◽  
pp. 114-120
Author(s):  
ZHEN-LONG LIANG ◽  
ZHAO-RONG HE ◽  
LI-BING ZHANG
Keyword(s):  
New Species ◽  
Plant Size ◽  
Iucn Red List ◽  
Red List ◽  
Critically Endangered ◽  
Fern Species ◽  
Iucn Red List Criteria

Two new fern species, Polystichum dongchuanense and P. menglaense (Dryopteridaceae), are described and illustrated from Yunnan, China. Both are members of P. subg. Haplopolystichum sect. Haplopolystichum. Polystichum dongchuanense is most similar to P. acutidens in plant size and pinna size, but the two can be distinguished from each other by pinna serration and soral number on pinnae. Polystichum menglaense is most similar to P. deltodon in plant size, but the two are different in pinna shape and soral distribution. Both new species have extremely narrow distributions and are classified as Critically Endangered (CR) following IUCN Red List Criteria.

Polystichum zhijinense (subg. Haplopolystichum; Dryopteridaceae), a new cave species of Polystichum from Guizhou, China

Phytotaxa ◽  
2017 ◽  
Vol 331 (1) ◽  
pp. 124
Author(s):  
YI-FAN DUAN ◽  
MATTHIAS KROPF ◽  
LI-BING ZHANG
Keyword(s):  
Southwest China ◽  
Iucn Red List ◽  
Red List ◽  
Critically Endangered ◽  
Guizhou Province ◽  
Cave Entrance ◽  
Fern Species ◽  
Iucn Red List Criteria

A new fern species, Polystichum zhijinense, a member of P. subg. Haplopolystichum (Dryopteridaceae), is described and illustrated from Guizhou Province in Southwest China. Polystichum zhijinense is somehow similar to P. fengshanense in having pinnae oblong and entire or shallowly repand (not aristate-spinulose on the margin), but differs in the shape of the pinna apex, the morphology of microscales, and the sorus distribution. Polystichum zhijinense was found at a cave entrance and is currently known from one population only and thus is classified as Critically Endangered (CR) following IUCN Red List criteria.

Seven new species of Polystichum (subg. Haplopolystichum; Dryopteridaceae) from southern China

Phytotaxa ◽  
2016 ◽  
Vol 280 (3) ◽  
pp. 201 ◽  
Author(s):  
MENG-QI HAN ◽  
YAN LIU ◽  
LI-BING ZHANG
Keyword(s):  
New Species ◽  
Southwest China ◽  
Southern China ◽  
Iucn Red List ◽  
Red List ◽  
Critically Endangered ◽  
Fern Species ◽  
Iucn Red List Criteria

Seven new fern species of Polystichum subg. Haplopolystichum (Dryopteridaceae) are described and illustrated from Guizhou and Yunnan provinces, Southwest China. These seven species include P. arcuatum, P. multispinulosum, and P. paucicarpum from Guizhou, and P. crassirachis, P. membranifolium, P. paraobliquum, and P. serratissimum from Yunnan. Four of these seven species are described from limestone caves. All seven species have extremely narrow distributions and are classified as Critically Endangered (CR) following IUCN Red List criteria.

Polystichum clarinervium (subg. Haplopolystichum; Dryopteridaceae), a new fern from Emei shan, China

Phytotaxa ◽  
2016 ◽  
Vol 280 (3) ◽  
pp. 271
Author(s):  
CHUN-XIANG LI ◽  
NIKISHA R. PATEL ◽  
LI-BING ZHANG
Keyword(s):  
New Species ◽  
Southwest China ◽  
Iucn Red List ◽  
Sichuan Province ◽  
Red List ◽  
Critically Endangered ◽  
Small Populations ◽  
Fern Species ◽  
Iucn Red List Criteria

A new fern species, Polystichum clarinervium, a member of P. subg. Haplopolystichum (Dryopteridaceae), is described and illustrated from Emei shan, Sichuan Province, Southwest China. The new species is similar to P. deltodon, but the former has pinnae slightly imbricate, pinna apex rounded, and veins clear, while the latter has pinnae not imbricate, pinna apex acute, and veins obscured. Polystichum clarinervium was found on a limestone slope under sparse forest at an elevation of 1300 m and is currently known from two small populations. It is classified as Critically Endangered (CR) following IUCN Red List criteria.

Polystichum luteoviride (subg. Haplopolystichum; Dryopteridaceae), a new, highly endangered cave species from Guizhou, China

Phytotaxa ◽  
2017 ◽  
Vol 313 (3) ◽  
pp. 296
Author(s):  
YI-FANN DUAN ◽  
NGAN THI LU ◽  
LIANG ZHANG ◽  
LI-BING ZHANG
Keyword(s):  
Southwest China ◽  
Iucn Red List ◽  
Red List ◽  
Critically Endangered ◽  
Guizhou Province ◽  
Karst Cave ◽  
Yellowish Green ◽  
Fern Species ◽  
Iucn Red List Criteria

One new fern species, Polystichum luteoviride, a member of P. subg. Haplopolystichum (Dryopteridaceae), is described and illustrated from Guizhou Province in Southwest China. Polystichum luteoviride is similar to P. deflexum Ching ex W.M.Chu (1992: 47) in having crenate pinna margins, but the former has lamina yellowish green and pinnae oblong, strongly reflexed, and acute to obtuse at apex, while the latter has laminae green and pinnae lanceolate, slightly reflexed or even angled acroscopically, and acuminate at apex. Polystichum luteoviride was found inside a karst cave at an elevation of 1200 m with humid and shady conditions and is currently known from one population in Ziyun County, southern Guizhou, and is classified as Critically Endangered (CR) following IUCN Red List criteria.

Hymenasplenium hastifolium sp. nov. (Aspleniaceae) from a karst cave in western Guangxi, China

Phytotaxa ◽  
2018 ◽  
Vol 333 (2) ◽  
pp. 281 ◽  
Author(s):  
KE-WANG XU ◽  
XIN-MAO ZHOU ◽  
LI-BING ZHANG ◽  
WEN-BO LIAO
Keyword(s):  
New Species ◽  
Iucn Red List ◽  
Red List ◽  
Critically Endangered ◽  
Karst Cave ◽  
Limestone Cave ◽  
Cave Entrance ◽  
Fern Species ◽  
Ca 50 ◽  
Iucn Red List Criteria

A new fern species, Hymenasplenium hastifolium (Aspleniaceae), from a limestone cave in western Guangxi, China, is described and illustrated. Morphological affinities of genus Hymenasplenium are also compared and discussed. The new species is distinguished by the shape of lamina, the venation, and the sorus distribution. Hymenasplenium hastifolium was found at a cave entrance and is currently known only from one population with ca. 50 individuals. It should be classified as Critically Endangered (CR) following IUCN Red List criteria.

Polystichum alluvium (subg. Haplopolystichum; Dryopteridaceae), a new cave species from Guizhou, China, with reference to new distribution records of P. leveillei

Phytotaxa ◽  
2017 ◽  
Vol 323 (1) ◽  
pp. 88
Author(s):  
NGAN THI LU ◽  
YI-FAN DUAN ◽  
LI-BING ZHANG
Keyword(s):  
Southwest China ◽  
Iucn Red List ◽  
Red List ◽  
Guizhou Province ◽  
Fern Species ◽  
Southern Central ◽  
Ca 50 ◽  
Iucn Red List Criteria ◽  
Western Guizhou ◽  
New Distribution

A new fern species, Polystichum alluvium, a member of P. subg. Haplopolystichum (Dryopteridaceae), is described from Guizhou Province in Southwest China. Polystichum alluvium is similar to P. lanceolatum in having small habit and subcoriaceous pinnae, but the former has oblanceolate laminae with basal pinnae strongly contracted toward lamina base, deltoid-ovate and sessile pinnae, and very short spinules on acroscopic pinna margins or no spinules, while the latter has lanceolate laminae with basal pinnae not contracted toward lamina base, oblong and petiolate pinnae, and long spinules on acroscopic pinna margins. Polystichum alluvium was found from the alluvial bottom of a karst cave at an elevation of 1410 m with humid and shady conditions and is currently known from one population with ca. 50 plants in western Guizhou. It is classified as Critically Endangered (CR) following IUCN Red List criteria. We also expanded the distribution of P. leveillei to southern-central Guizhou based on our new collections.

scholarly journals Astragalus wulingensis (Leguminosae), a new species from Hunan China

Phytotaxa ◽  
2014 ◽  
Vol 159 (4) ◽  
pp. 279 ◽  
Author(s):  
Jiaxiang Li ◽  
Xunlin Yu
Keyword(s):  
New Species ◽  
Iucn Red List ◽  
Red List ◽  
Critically Endangered ◽  
Hunan Province ◽  
Iucn Red List Criteria ◽  
Close Relatives ◽  
A New Species

A new species of Astragalus Linn. (Leguminosae) from Wuling Mountain of Hunan province, China, Astragalus wulingensis Jia X. Li & X. L. Yu sp. nov. is described, illustrated, and compared with its close relatives. It belongs to section Lotidium Bunge, subgen. Astragalus Bunge. The new species is endemic to Wuling Mountain in NW Hunan Province and has limited populations and vulnerable habitat. Astragalus wulingensis is assessed as Critically Endangered (CR B2c) according to IUCN Red List criteria.

Polystichum quangbinhense sp. nov. (subg. Haplopolystichum; Dryopteridaceae), the southernmost cave species of Polystichum from central Vietnam

Phytotaxa ◽  
2016 ◽  
Vol 283 (3) ◽  
pp. 295
Author(s):  
NGAN THI LU ◽  
LIANG ZHANG ◽  
DUNG THAI NGUYEN ◽  
LI-BING ZHANG
Keyword(s):  
Iucn Red List ◽  
Red List ◽  
Critically Endangered ◽  
Karst Cave ◽  
Central Vietnam ◽  
Fern Species ◽  
Iucn Red List Criteria ◽  
Two Sides ◽  
Two Populations

A new fern species, Polystichum quangbinhense, a member of P. subg. Haplopolystichum (Dryopteridaceae), is described and illustrated from Quang Binh Province in central Vietnam. It is the southernmost cave species of the genus discovered so far. Polystichum quangbinhense is most similar to P. obliquum in having oblong pinnae, but the two can be distinguished from each other by the morphology of pinna margins. Polystichum quangbinhense was found inside a karst cave at an elevation of 120 m with humid and shady conditions and is currently known from two populations occurring at two sides of the Doi Cave (So Dua Cave), Quang Binh Province, central Vietnam, and is classified as Critically Endangered (CR) following IUCN Red List criteria.

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