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

37. Themelium (T. Moore) Parris, Kew Bull. 52: 737. 1997.

蒿蕨属 hao jue shu

Authors: Shannjye Moore & Barbara S. Parris

Polypodium sect. Themelium T. Moore, Index Fil. 71. 1857.

Plants small to medium-sized, epiphytic. Rhizomes dorsiventral, with stipes in 2 rows; scales clathrate or not, medium to dark reddish brown, dark brown, or dark gray, glabrous. Stipe subarticulate or not articulate, phyllopodia absent. Lamina pinnately divided to bipinnatifid; veins in pinnae pinnately branched, free, each vein ending with a hydathode on adaxial surface. Sori more than 1 per pinna, orbicular to oval, superficial or slightly sunken in shallow depressions in lamina. Sporangia glabrous. Hairs simple eglandular.

About 20 species: Indonesia to Pacific islands; two species in China.

1 Pinnae entire; mature lamina glabrous except at base.   1 T. blechnifrons
+ Pinnae deeply pinnatifid; mature lamina with hairs on rachis.   2 T. tenuisectum

Lower Taxa


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