Difference between revisions of "×achnella caduca"
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name=×achnella caduca | name=×achnella caduca | ||
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|authority=(Beal) Barkworth | |authority=(Beal) Barkworth | ||
|rank=species | |rank=species | ||
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|basionyms= | |basionyms= | ||
|family=Poaceae | |family=Poaceae | ||
| + | |illustrator=Cindy Roché | ||
| + | |illustration copyright=Utah State University | ||
|distribution=Alta.;B.C.;Man.;N.W.T.;Sask.;Yukon;Mont.;N.Dak.;Nebr. | |distribution=Alta.;B.C.;Man.;N.W.T.;Sask.;Yukon;Mont.;N.Dak.;Nebr. | ||
|reference=None | |reference=None | ||
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|publication year= | |publication year= | ||
|special status= | |special status= | ||
| − | |source xml=https:// | + | |source xml=https://bitbucket.org/aafc-mbb/fna-data-curation/src/200273ad09963decb8fc72550212de541d86569d/coarse_grained_fna_xml/V24/V24_233.xml |
|subfamily=Poaceae subfam. Pooideae | |subfamily=Poaceae subfam. Pooideae | ||
|tribe=Poaceae tribe Stipeae | |tribe=Poaceae tribe Stipeae | ||
Latest revision as of 16:22, 11 May 2021
Culms 50-90 cm, glabrous. Basal sheaths mostly glabrous, margins and throats usually ciliate; ligules 0.5-1.7 mm, truncate-rounded; blades 1-3.5 mm wide. Panicles 15-18 cm; branches ascending. Lower glumes 6-8.5 mm long, 1-1.6 mm wide; florets 4-5 mm; calluses about 0.7 mm; lemmas 7-veined, hairy, hairs 1-2 mm, apices awned; awns 9-16 mm, readily deciduous; paleas 2.5-3.3 mm, 2/3 - 3/4 the length of the lemmas, hairy; anthers 2, 1.7-2.3 mm, differing in length within the florets, indehiscent. 2n = 65.
Distribution
Alta., B.C., Man., N.W.T., Sask., Yukon, Mont., N.Dak., Nebr.
Discussion
×Achnella caduca is a sterile hybrid between Achnatherum hymenoides and Nassella viridula that occurs infrequently in Montana and Wyoming. It differs from Achnatherum hymenoides in its longer glumes and florets; from Nassella viridula in its more saccate glumes, longer lemma hairs, and well-developed palea; and from other hybrids involving Achnatherum hymenoides in its readily deciduous awn.
Selected References
None.