渐尖毛蕨(原变种) jian jian mao jue (yuan bian zhong)

Polypodium acuminatum Houttuyn, Nat. Hist. 2(14): 181. 1783; Aspidium sophoroides (Thunberg) Swartz; Christella acuminata (Houttuyn) Holttum; C. sophoroides (Thunberg) H. Léveillé; Cyclosorus cangnanensis K. H. Shing & C. F. Zhang; C. ciliensis K. H. Shing; C. dissitus Ching ex K. H. Shing; C. glabrescens Ching ex K. H. Shing; C. kuizhouensis K. H. Shing; C. nanchuanensis Ching & Z. Y. Liu; C. sinoacuminatus Ching & Z. Y. Liu; C. sophoroides (Thunberg) Tardieu; C. subacuminatus Ching ex K. H. Shing & J. F. Cheng; C. subcoriaceous Ching ex K. H. Shing; Dryopteris acuminata (Houttuyn) Nakai; D. sinica Christ; D. sophoroides (Thunberg) Kuntze; Nephrodium sophoroides (Thunberg) Desvaux; P. sophoroides Thunberg; P. unitum Thunberg (1784), not Linnaeus (1759); Thelypteris acuminata (Houttuyn) C. V. Morton.

Proximal pinnae usually not shortened, acuminate at apices; laminae with usually 2 pairs of veinlets beneath sinus.

Semi-open places in thickets, grasslands, farmland margins, roadsides; near sea level to 1700 m. Anhui, Chongqing, Fujian, S Gansu, Guangdong, Guangxi, Guizhou, Hainan, Henan, Hubei, Hunan, Jiangsu, Jiangxi, S Shaanxi, Shandong, Sichuan, Taiwan, Yunnan, Zhejiang [Japan, Korea, Philippines].

The type of Cyclosorus abbreviatus Ching & K. H. Shing ex K. H. Shing & J. F. Cheng (Jiangxi Sci. 8(3): 45. 1990) has features intermediate between C. acuminatus var. acuminatus and C. aridus. This taxon might be a hybrid.

The type of Cyclosorus yuanjiangensis Ching ex K. H. Shing (FRPS 4(1): 335. 1999) has features intermediate between C. acuminatus var. acuminatus and C. procurrens. Only one gathering with rare mature sori has been collected. This taxon might be a hybrid.

The type of Cyclosorus zhangii K. H. Shing (FRPS 4(1): 340. 1999) has features intermediate between C. acuminatus var. acuminatus and C. parasiticus. Only one gathering (the type) without mature sori has been collected. This taxon might be a hybrid.

The type of Cyclosorus tarningensis Ching (Wuyi Sci. J. 1: 4. 1981) might be an irregular plant of C. acuminatus var. acuminatus. The spores of the two species appear similar.

The type of Cyclosorus nanchuanensis Ching & Z. Y. Liu (Bull. Bot. Res., Harbin 4(3): 14. 1984) has not been examined by us, but it seems quite similar to C. acuminatus var. acuminatus according to the photo. Thus, this taxon is synonymized here, pending further study.