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

29. Oreogrammitis Copeland, Philipp. J. Sci., C. 12: 64. 1917.

滨禾蕨属 bin he jue shu

Authors: Shannjye Moore & Barbara S. Parris

Plants small, epiphytic, seldom petrophytic. Rhizomes dorsiventral, with stipes in 2 rows; scales not clathrate, brown or reddish brown, glabrous. Stipe articulate or not, phyllopodia present or not. Lamina usually entire, rarely slightly crenulate; veins simple or 1- or 2-forked, free, vein endings sometimes with a hydathode on adaxial surface of lamina. Sori usually superficial or slightly sunken in shallow depressions on lamina, sometimes deeply sunken, on acroscopic vein branch unless veins simple, in 2 rows, 1 on each side of midrib. First-developed sporangia usually with 1-4 simple hairs at apex adjacent to annulus, rarely glabrous; later-developed sporangia glabrous. Hairs usually simple eglandular, either solitary or tufted, and rarely 1- or 2-forked with eglandular branches.

About 110 species: Sri Lanka and China to Australia and Pacific islands; seven species (two endemic) in China.

1 Mature lamina glabrous in apical half, or only with very sparse hairs   (2)
+ Mature lamina with hairs in apical half, at least on midrib   (3)
2 (1) Sori superficial, or slightly sunken; sporangia setose.   1 O. adspersa
+ Sori deeply sunken; sporangia glabrous.   5 O. nuda
3 (1) Lateral veins distinct.   6 O. reinwardtii
+ Lateral veins hidden   (4)
4 (3) Lamina usually less than 6 cm; stipe usually less than 1 cm   (5)
+ Lamina usually more than 8 cm; stipe more than 1 cm   (6)
5 (4) Stipe hairs dark reddish brown, 0.1-0.2 mm.   3 O. dorsipila
+ Stipe hairs pale to dark red-brown, 0.2-1.8 mm.   7 O. sinohirtella
6 (4) Stipe hairs up to 1.2 mm; lateral veins 1- or 2-forked, acroscopic branch extending beyond sorus.   2 O. congener
+ Stipe hairs up to 0.5 mm; lateral veins 1-forked, acroscopic branch not extending beyond sorus.   4 O. hainanensis

Lower Taxa


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