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Keys
Vascular plant groups
Club mosses
Ferns
Vegetative key to families
Gymnosperms
Flowering plants
Genera
Families
Vegetative key to the families
Vegetative Key
Vegetative key to the families
consider the other alternative
OCHREA
(
sheath
) Present around the stem and
petiole
, formed from
fused
stipules (Fig. 25). Leaves
alternate
. Herbs
Polygonaceae
choose this alternative
reject this alternative
Perianth
segments or lobes 6, unequal
choose this alternative
reject this alternative
Perianth
segments 5, ± equal