截裂毛蕨(原变种) jie lie mao jue (yuan bian zhong)

Polypodium truncatum Poiret, Encycl. 5: 534. 1804; Cyclosorus pustulifer Ching ex K. H. Shing ["pustuliferus"]; C. truncatus var. acutiloba Ching; C. truncatus f. kwashotensis (Hayata) H. Itô; C. truncatus f. laevifrons (Hayata) H. Itô; C. truncatus f. sublaevifrons (Tagawa) H. Itô; Dryopteris kwashotensis Hayata; D. laevifrons Hayata; D. laevifrons var. kwashotensis (Hayata) Tagawa; D. sublaevifrons Tagawa; D. truncata (Poiret) Kuntze; Nephrodium truncatum (Poiret) C. Presl; Pneumatopteris truncata (Poiret) Holttum; Polystichum truncatum (Poiret) Gaudichaud; Thelypteris truncata (Poiret) K. Iwatsuki; T. truncata f. kwashotensis (Hayata) C. F. Reed; T. truncata f. laevifrons (Hayata) C. F. Reed; T. truncata f. sublaevifrons (Tagawa) C. F. Reed.

Plants 0.6-2 m tall. Middle pinnae 18-30 × 1.5-2.5 cm, lobed 1/3-1/2 toward costae; veinlets 6-10 pairs per segment, proximal 1 or 2 pairs anastomosing, next pair running to sinus membrane. 2n = 72, 144.

Streamsides, wet places in forests; 100-1300 m. S Fujian, Guangdong, Guangxi, S Guizhou, Hainan, S Hunan, Taiwan, SE Xizang, S Yunnan [India, Indonesia, Japan, Laos, Malaysia, Myanmar, Philippines, Sri Lanka, Thailand, Vietnam; N Australia, Pacific islands (Polynesia)].

In FRPS (4(1): 257. 1999), K. H. Shing mentioned that many specimens from China with broadened pinna bases differed from the type. Although both broadened and narrowed pinna bases exist, all of the Chinese specimens are ± different in general outline from the type. More detailed studies are needed.