Aristida schiedeana
Single Threeawn
Aristida schiedeana or Single Threeawn |
The seedheads tend to be almost spike-like. |
The awns start out like typical threeawns, but above the usual lemma projection that supports the
three awns, there is only one awn, bent off to the side.
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The seedheads are rather spikelike and clustered.
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Seedheads can lean to one side.
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You can usually see the bent awn if you look closely.
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The florets below the awns are elongate, with
unequal glumes.
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On the left is the base of the grass with seedheads
cut off, showing long thin leaves.
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The old leaves of a perennial grass remain at the
base. Sometimes they curl.
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How to Identify Single Threeawn
First see if you can tell by the spindly, pointy look that it is a threeawn (Aristida)
species. Then note the single bent awn. Quite a few grasses have bent awns, but
this one looks just like one of the smaller threeawns that lost two awns.
Similar Species
All threeawns are somewhat recognizable by their
general spindly appearance. Two grow large and have stiff branches that emerge
perpendicular to the stem and several inches apart, Spidergrass and
the similar Poverty Threeawn. However, those
shorter ones with bunched, almost spike-like
seedheads, the ones that look like Single Threeawn, all have three awns of
varying lengths.