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Keys
Vascular plant groups
Club mosses
Ferns
Vegetative key to families
Gymnosperms
Flowering plants
Genera
Families
Cyperaceae >
Leaf
sheath
closed or rarely open and then the
perianth
reduced to bristles or
minute
scales
Cyperaceae
consider the other alternative
Flowers
bisexual
or unisexual but never enclosed in a
utricle
and never apparently separated into unisexual spikelets
consider the other alternative
Spikelets with more than 2 perfect flowers
consider the other alternative
Perianth
scales often numerous but always with 2
lateral
ones
keeled
or at least concave; usually a number of flat ones inside these
lateral
scales
consider the other alternative
Spikelet
solitary, conical.
Nut
smooth. Glumes closely
imbricate
;
perianth
scales not exserted
Lepironia