特徵描述
作者
SHIEH, WANG-CHUENG and DEVOL, CHARLES E.
型態特徵
Eusporangiate, succulent herbs, usually terrestrial (1-2 genera epiphytic); caudex fleshy, short or rhizome fleshy creeping; roots long, fleshy. Fronds simple, pinnate or ternate, not circinnate; fertile segment brandching from sterile frond. Sporangia borne in a simple or compound spike. Gametophytes of terrestrial speciies subterranean, fleshy, containing endophytic fungi.
屬
A family of five genera and 90 species, four genera in Taiwan.
參考文獻
Helminthostachys 七指蕨屬
作者
SHIEH, WANG-CHUENG and DEVOL, CHARLES E.
型態特徵
Rhizome very short, fleshy, and erect in young plants, creeping in mature plants, with an ectophloic siphonostele, cortex without sclerenchyma; roots fleshy with endophytic fungi. Fronds tripartite; each division with 2-3 (or more) lanceolate lobes, the lateral lobes often decurrent; veins free, forking. Fertile spike long-stalked; sporangia borne in clusters on short lateral branches.
