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Keys
Vascular plant groups
Club mosses
Ferns
Vegetative key to families
Gymnosperms
Flowering plants
Genera
Families
Asteraceae
Flowers grouped into heads
Asteraceae
consider the other alternative
Burr
not formed around the fruits at maturity
consider the other alternative
Florets
ligulate
and tubular, or all
ligulate
;
ligule
more than 3 mm long
consider the other alternative
Ray
florets
ligulate
;
disc
florets tubular
choose this alternative
reject this alternative
Pappus
absent or
minute
(less than 0.5 mm long)
choose this alternative
reject this alternative
Pappus
present and conspicuous