slimspike threeawn (wiregrass, needlegrass)
Aristida longespica Poiret

Two subspecies below, click thumbnail to see a larger image
slimspike threeawn
Aristida longespica Poiret var. longespica

plantspikeletillustration

 Kearney threeawn
Aristida longespica var. geniculata (Raf.) Fernald

plantspikeletillustration
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