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

1. Psilotum Swartz, J. Bot. (Schrader). 1800(2): 8, 109. 1801.

松叶蕨属 song ye jue shu

Plants small to medium-sized, often epiphytic. Rhizomes long creeping, mostly dichotomously branched. Stems erect to somewhat pendulous, glabrous, repeatedly dichotomously branched; branches green, ridged or complanate. Leaves reduced, veinless, sessile, dimorphic; trophophylls scalelike, subulate-triangular; sporophylls deeply bifid. Sporangia 3-lobed, attached at bases of sporophylls. Spores oblong in polar view, reniform in equatorial view, monolete, foveolate.

Two species: widespread in tropical and warm-temperate regions; one species in China.

Psilotum complanatum O. Swartz, which differs from P. nudum in its flattened stems 1.5-3 mm wide, has been reported from Malaysia and Oceania (among other regions). It eventually may be discovered in S China.

Lower Taxon


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