Difference between revisions of "Aegopogon tenellus"
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|synonyms={{Treatment/ID/Synonym | |synonyms={{Treatment/ID/Synonym | ||
|name=Aegopogon tenellus var. abortivus | |name=Aegopogon tenellus var. abortivus | ||
| − | |authority= | + | |authority= |
| + | |rank=variety | ||
}} | }} | ||
|hierarchy=Poaceae;Poaceae subfam. Chloridoideae;Poaceae tribe Cynodonteae;Aegopogon;Aegopogon tenellus | |hierarchy=Poaceae;Poaceae subfam. Chloridoideae;Poaceae tribe Cynodonteae;Aegopogon;Aegopogon tenellus | ||
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name=Aegopogon tenellus | name=Aegopogon tenellus | ||
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|authority=(DC.) Trin. | |authority=(DC.) Trin. | ||
|rank=species | |rank=species | ||
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|basionyms= | |basionyms= | ||
|family=Poaceae | |family=Poaceae | ||
| + | |illustrator=Linda A. Vorobik;Karen Klitz | ||
| + | |illustration copyright=Utah State University | ||
|distribution=Ariz. | |distribution=Ariz. | ||
|reference=None | |reference=None | ||
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|subfamily=Poaceae subfam. Chloridoideae | |subfamily=Poaceae subfam. Chloridoideae | ||
|tribe=Poaceae tribe Cynodonteae | |tribe=Poaceae tribe Cynodonteae | ||
Latest revision as of 17:59, 11 May 2021
Plants annual; tufted. Culms 2-30 cm, bases often prostrate or decumbent, strongly branching. Sheaths glabrous or sparsely hirsute; ligules 0.7-1.5 mm, lacerate; blades 1-7 cm long, 1-2 mm wide, glabrous or puberulent. Panicles 2-6 cm. Lateral spikelets 1.5-2.3 mm, on 1-1.3 mm pedicels; central spikelets 2.5-3.2 mm, on 0.3-0.6 mm pedicels. Glumes 1.3-1.8 mm, flabellate, lobes rounded, awns 0.1-0.6 mm; lemmas 2.5-3.2 mm, central awns 3-8 mm, lateral awns to 1 mm; anthers 0.5-0.8 mm. 2n = 20, 60.
Discussion
Aegopogon tenellus usually grows between 1550-2150 m in shady habitats of moist canyons, but it is sometimes found along roadsides and in other open areas. Its range extends from southern Arizona into northern South America. In some plants, the lateral spikelets are reduced (Aegopogon tenellus var. abortivus (E. Fourn.) Beetle), but such spikelets (and central spikelets with reduced awns) are also found in plants with normal spikelets, so taxonomic recognition is not warranted.
Selected References
None.