作者

DEVOL, CHARLES E. and SHIEH, WANG-CHUENG

型態特徵

Terrestrial ferns; rhizome creeping, short, densely covered with long, multicellular, yellow hairs; protostelic. Fronds dimorphic; stipes not articulate to rhizome, approximate, without hairs except at base, c. s. with one round bundle; stipe of sterile frond 20-30 cm long, stipe of fertile frond longer than sterile; lamina of sterile frond subcoriaceous, ovate, apex acute, or with 2 acute lobes separated by a wide sinus; with 3-4 main veins at base, veinlets anastomosing, areolae with branching included veinlets; fertile frond elliptical, simple, blade 10-20 cm long, 1 cm broad. Sporangia acrostichoid, i. e. densely covering the whole undersurface; paraphyses abundant, capitate (terminal cell oblong).

屬

A family of only one genus.

參考文獻

作者

DEVOL, CHARLES E. and SHIEH, WANG-CHUENG

型態特徵

Rhizome woody, creeping, covered with very narrow linear, dark, stiff scales; siphonostelic. Fronds broadly fan-shaped, cleft to base into two equal divisions, each half dichotomously divided into several long linear lobes; main veins dichotomous, with many nearly parallel smaller veins connecting the main veins at right angles, forming oblong areolae, these sub-divided into many small rectangular areolae; stipes stout, longer than lamina, grooved on upper side, without scales except at base. Sori small, round, exindusiate, one per small areola, borne on junction of veinlets; paraphyses mixed with sporangia.

參考文獻