特徵描述
作者
CHIOU, WEN-LIANG, SHIEH, WANG-CHUENG and DEVOL, CHARLES E.
型態特徵
Caudex erect, sometimes a small tree-like trunk, or rhizome creeping or scandent. Fronds monomorphic or dimorphic, usually pinnate or pinnatifid, rarely simple or bipinnate; stipes scaly at base, not articulate to rhizome; venation usually free, or with a costal row of areolae. Sori costal, discrete or in a coenosori; usually with an indusium opening towards costa, rarely exindusiate. Spore bilaterale. Adult gametophytes cordate.
屬
Nine or ten genera, five in Taiwan.
參考文獻
Diploblechnum 假桫欏屬
作者
CHIOU, WEN-LIANG, SHIEH, WANG-CHUENG and DEVOL, CHARLES E.
型態特徵
Small tree ferns; stem black, erect, to about 1 m tall, 1-2 cm in diameter, covered with stubs of persistent leaf bases, apex scaly. Fronds slightly dimorphic, long lanceolate, hair-pointed, brown scales with paler margins; rachis scales similar but smaller; rachis narrowly winged, bearing a small lobe between each pinna; venation free, simple or once forked; veinlets ending in hydathodes; margins of pinnules entire or serrulate; median pinnae 4-8 cm long, lower pinnae shortened to small lobes of about 2 mm long. Fertile fronds slightly contracted, pinnae with caudate apices. Sori costal, coenosori, sporangia borne on straight unbranched fertile veins parallel to costa; indusia thin, linear, brown, continuous or lobed; free margin of fertile pinnae very narrow, inroled.
