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Keys
Vascular plant groups
Club mosses
Ferns
Vegetative key to families
Gymnosperms
Flowering plants
Genera
Families
Acianthus R.Br.
Labellum
with 2 well developed basal glands
Acianthus
consider the other alternative
Sepals not long-
filiform
, up to 20 mm long.
Perianth
brown, green or pinkish
choose this alternative
reject this alternative
Petals spreading.
Column
covered by the
dorsal
sepal
.
choose this alternative
reject this alternative
Petals reflexed against the
ovary
.
Column
prominently exserted.