披针叶石韦

Pyrrosia lanceolata (L.) Farwell in Amer. Midl. Nat. 12: 245. 1930: Ching in Bull. Chin. Soc. 1: 70. 1935; Tardieu et C. Chr. in Fl. Indo-Chine 7 (2): 515. 1941; Alston, Ferns W. Trop. Africa 46. 1959; Tardieu, Fl. Madagasc. 102. 1960; Copel., Fern Fl. Phil. 3: 472. 1960: Schelpe, Fl. Zambesiaca Pterid. 146. 1970: Ching et al., inC. Y. Wu, Fl. Xizang 1 335. f. 87: 4-5. 1983; Jacobson, Ferns F. Allies S. Africa305. f. 221. 1983; Satija et Bir, Polypod. Ferns India 38. 1985: Hovenk., Monogr. Pyrrosia 191. 1986, p. p. ; Tagawa et K. Iwats., Fl. Tailand 3: 500. 1989; Shing etK. Iwats., in J. Jap. Bot. 72 (1): 30. 1997. ——Acrostichum lanceoolatum L., SP. Pl. 2: 1067. 1753. ——Polypodium spissum Bory ex Willd., Sp. Pl. 5: 146. 1810. ——yclophorus spissum (Willd.) Desv. in Berl. Mag. 5: 301. 1811. ——Acrostichum dubium Pioir. in Lam., Enc. Suppl. 1: 120. 1810. ——Polypodium dubium (Poir.) Kuhn, Fil. Afr. 147. 1868. ——Cyclophorus glaber Desv. in Mag. 5: 301. 1811. ——Polypodium vittarioides Mett., Ferng. Polyp. 126. 1857. ——Niphobolus vittarioides (Mett.) T. Moore. Ind. Fil. 276. 1861. ——Niphobolus giesen-hageni Christ in Ann. Cons. Jard. Bot. Geneve 7-8: 330. 1904. ——Cyclophorusgiesenhageni (Christ) C. Chr. Ind. Fil. 199.. 1906. ——Cyclophorus cornutus Copel. in Brittonia 1: 77, pl. 3. 1931. ——Pyrrosia cornuta (Copel.) Tagawa in J. Jap. Bot. 22: 163. 1949.

植株高5-12厘米。根状茎细长横走，密被狭披针形鳞片；鳞片长渐尖头，边缘具长的睫毛，幼时白色，老时变淡棕色。叶远生，一型；叶柄长5-10毫米，基部被鳞片，向上疏被星状毛；叶片近线形，中部最宽，向两端渐变狭，钝尖头，基部长下延，长4-14厘米，中部宽约6毫米，上表面光滑无毛，下表面被厚层的星状毛，全缘。叶干后革质，上面淡黄色，下面深黄色或灰白色。主脉两面均不隆起，小脉网状，不显。孢子囊群近圆形，通常聚生于叶片的上半部，成熟时扩散而布满整个叶片下面，无盖，幼时被很厚的星状毛覆盖。

产云南（麻栗坡、泸水、沧源）、西藏（墨脱）。附生于雨林下岩石上或树干上，海拔750-2000米。缅甸、尼泊尔、泰国和新几内亚岛也产。