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Keys
Vascular plant groups
Club mosses
Ferns
Vegetative key to families
Gymnosperms
Flowering plants
Genera
Families
Rubiaceae
Leaves apparently whorled or
opposite
with
interpetiolar
stipules
Rubiaceae
consider the other alternative
Flowers not united with each other
consider the other alternative
Herbs
consider the other alternative
Stipules leaf-like forming what appear to be whorls of “leaves” at the nodes
consider the other alternative
Corolla
funnel-shaped, with a distinct tube at least in the male flowers
choose this alternative
reject this alternative
Calyx
present, 6-toothed
Sherardia
choose this alternative
reject this alternative
Calyx
absent
Asperula