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