Psilotaceae
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Common names: Whisk fern Family
Treatment appears in FNA Volume 2. Treatment on page 16.
Plants perennial, terrestrial or epiphytic, with corallike, rhizoid-bearing, branched, subterranean axes. Roots absent. Aerial shoots simple or dichotomously branched; appendages leaflike or bractlike, alternate to subopposite, veinless or 1-veined, less than 1 cm. Synangia globose, of 2–3 fused, homosporous eusporangia, solitary in axils of shoot appendages, dehiscing loculicidally. Spores many, reniform, not green. Gametophytes subterranean, mycotrophic, fleshy, elongate, and branched.
Distribution
{{#Distribution Maps: family
|Worldwide in tropical regions.
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| }} Worldwide in tropical regions.
Discussion
Genera 2, species 4–8 (1 genus, 1 species in the flora).
Selected References
None.
Lower Taxa
None.
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