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FOC | Family List | FOC Vol. 2-3 | Davalliaceae

2. Araiostegia Copeland, Philipp. J. Sci. 34: 240. 1927.

小膜盖蕨属 xiao mo gai jue shu

Araiostegiella M. Kato & Tsutsumi.

Plants moderate-sized, epiphytic or growing on moss-covered rocks or old trunks. Rhizome long creeping, with a ring of 2 larger vascular bundles and 6-10 smaller ones, densely scaly; scales rufous, ovate to lanceolate, peltate, thin. Fronds remote or approximate; stipe purple or slightly purple, glabrous or scaly, with a ring of 2 large bundles and 4 smaller ones; lamina finely dissected, broadly ovate or narrowly ovate, deltoid, thinly papery, glabrous. Sori submarginal, small, terminal on veinlet; indusium small, membranous, semicircular or orbicular-reniform, attached only at base, long stalked; annulus longitudinal, consisting of 12-14 thickened cells; spores elliptic, translucent, usually without perispore. n = 10, (40).

About ten species: mostly in SW China, west to India and Myanmar; four species (one endemic) in China.

1 Scales of rhizome broadly ovate, apex obtuse.   1 A. pulchra
+ Scales of rhizome broadly lanceolate, apex acuminate   (2)
2 (1) Fronds 20-35 cm tall, approximate, 2-5 mm apart; lamina tripinnatifid; pinnae articulate to rachis; stipe and rachis persistent and turning black when pinnae fall.   2 A. hookeri
+ Fronds 40-70 cm tall, remote, 1.5-5 cm apart; lamina 4- or 5-pinnatifid; pinnae not articulate to rachis; stipe and rachis not persistent   (3)
3 (2) Basal pair of pinnules catadromous.   3 A. faberiana
+ Basal pair of pinnules opposite.   4 A. perdurans

Lower Taxa


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