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

35. Prosaptia C. Presl, Tent. Pterid. 165. 1836.

穴子蕨属 xue zi jue shu

Authors: Shannjye Moore & Barbara S. Parris

Ctenopteris Blume ex Kunze.

Plants small to medium-sized, epiphytic, rarely petrophytic. Rhizomes dorsiventral, with stipes in 2 rows; scales subclathrate to clathrate, reddish brown, dark reddish brown, brown, dark brown, or dark grayish brown, with simple eglandular hairs, sometimes also with 1- or 2-forked hairs with eglandular branches on margin, sometimes simple eglandular hairs also on abaxial surface. Stipe articulate to rhizome, phyllopodia present. Lamina pinnatifid to pinnate; pinnae entire to lobed; venation free, pinnately branched in pinnae, veins simple or rarely 1-forked, vein endings without hydathodes on adaxial surface of lamina; hairs simple eglandular, solitary or tufted, or 1- or 2-forked with eglandular branches. Sori 1 to several per pinna, 1 per vein, usually sunken in marginal or submarginal pouches, or depressed in cavities on abaxial surface of lamina, sometimes on surface of lamina or slightly sunken in shallow depressions. Sporangia glabrous.

About 60 species: Sri Lanka and China to Australia and Pacific islands; seven species in China.

1 Sori superficial or slightly sunken.   5 P. nutans
+ Sori deeply sunken   (2)
2 (1) Mouth of soral cavity opening toward lamina margin; mature sporangia extending beyond margin   (3)
+ Mouth of soral cavity not opening toward lamina margin; mature sporangia not extending beyond margin   (4)
3 (2) Fronds pinnate or pinnately divided to narrow wing less than 0.5 mm wide along rachis; sori marginal.   3 P. contigua
+ Fronds not pinnate, pinnately divided to wing 1-2 mm wide along rachis; sori submarginal.   7 P. urceolaris
4 (2) Soral cavity with distinct prominent edge   (5)
+ Soral cavity without prominent edge   (6)
5 (4) Soral cavity ?circular to broadly elliptic, rim higher on side nearest to costa.   4 P. intermedia
+ Soral cavity elliptic to narrowly elliptic, rim of even height.   6 P. obliquata
6 (4) Fronds pinnately divided to wing 2-3 mm wide along rachis.   1 P. barathrophylla
+ Fronds pinnate or deeply pinnately divided to narrow wing less than 0.5 mm wide along rachis.   2 P. celebica

Lower Taxa


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