1	"Fronds clustered or crowded on rhizome, not atriculated; stipe indistinct, winged almost to base; sori linear or oval-shaped"	Notogrammitis
1	"Fronds well-spaced along rhizome, usually articulated; stipe prominent (at least on feritle fronds), lacking wing, or winged only in upper half; sori round or oval-shaped"	2
2	"Fronds more than 10 cm long. simple or pinnately lobed, glabrous or with sparse scales; veins evident; sori rather distant"	Microsorum
2	"Fronts less than 10 cm long, simple, lower surface densely matted with stellate hairs; veins obscure in thick lamina; sori crowded"	"Pyrrosia {Pyrrosia rupestris}"