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Keys
Vascular plant groups
Club mosses
Ferns
Vegetative key to families
Gymnosperms
Flowering plants
Genera
Families
Psilotum Sw. >
Sterile
lateral
appendages 0.5–2 mm long; the apex non-
mucronate
.
Synangia
composed of 3 (very rarely 2 or 4)
sporangia
(Fig. 12)
Psilotum