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Keys
Vascular plant groups
Club mosses
Ferns
Vegetative key to families
Gymnosperms
Flowering plants
Genera
Families
Amaranthaceae
Perianth
segments
scarious
; filaments often
connate
at the base
Amaranthaceae
consider the other alternative
Leaves
opposite
choose this alternative
reject this alternative
Perianth
segments bracts and bracteoles not rigid
choose this alternative
reject this alternative
Perianth
segments, bracts and bracteoles rigid,
acute
, often
spinescent