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Plant
longevity
annual or biennial
perennial
Graminoid Traits
leaf arrangment - number of ranks
2-ranked
3-ranked
stem consistency
hollow except at nodes
solid
culm cross-section
round
angled
leaf sheath
closed (not split)
open (split on side)
ligules
eciliate membrane
ciliate membrane
fringe of hairs
erose
spikelet disarticulation
breaking up at maturity (above glumes)
falling entire (below glumes)
spikelet compression
laterally compressed
dorsally compressed
subterete
awns - present/absent
awns present
awns absent