Difference between revisions of "Setaria villosissima"
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|distribution=Ariz.;Tex. | |distribution=Ariz.;Tex. | ||
| − | |discussion=<p>Setaria villosissima is a rare species that grows on granitic soils in southwestern Texas and northern Mexico. The villous sheaths and blades and large spikelets of S. villosissima aid in its identification. A.S. Hitchcock's (1951) report of Setaria villosissima from Arizona is based on misidentification of a specimen of S. leucophila (Reeder 1994).</p> | + | |discussion=<p><i>Setaria villosissima</i> is a rare species that grows on granitic soils in southwestern Texas and northern Mexico. The villous sheaths and blades and large spikelets of <i>S. villosissima</i> aid in its identification. A.S. Hitchcock's (1951) report of <i>Setaria villosissima</i> from Arizona is based on misidentification of a specimen of S. leucophila (Reeder 1994).</p> |
|tables= | |tables= | ||
|references={{Treatment/Reference | |references={{Treatment/Reference | ||
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name=Setaria villosissima | name=Setaria villosissima | ||
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|authority=(Scribn. & Merr.) K. Schum. | |authority=(Scribn. & Merr.) K. Schum. | ||
|rank=species | |rank=species | ||
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|basionyms= | |basionyms= | ||
|family=Poaceae | |family=Poaceae | ||
| − | |illustrator=Linda A. Vorobik | + | |illustrator=Linda A. Vorobik;Annaliese Miller |
| + | |illustration copyright=Utah State University | ||
|distribution=Ariz.;Tex. | |distribution=Ariz.;Tex. | ||
|reference=reeder1994a | |reference=reeder1994a | ||
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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/V25/V25_1405.xml |
|subfamily=Poaceae subfam. Panicoideae | |subfamily=Poaceae subfam. Panicoideae | ||
|tribe=Poaceae tribe Paniceae | |tribe=Poaceae tribe Paniceae | ||
Latest revision as of 17:56, 11 May 2021
Plants perennial; cespitose. Culms 40-100 cm. Sheaths villous distally, margins ciliate; ligules about 1 mm, densely ciliate, hairs white; blades 15-30 cm long, 5-8 mm wide, both surfaces villous. Panicles 10-20 cm, loosely spicate; bristles usually solitary, 10-20 mm. Spikelets 2.8-3 mm. Lower glumes about 1/3 as long as the spikelets, broadly ovate, 3-veined; upper glumes nearly equaling the spikelets, 5-7-veined; lower lemmas equaling the upper lemmas, 5-veined; lower paleas about 1/5 as long as the upper paleas, lanceolate; upper lemmas finely and transversely undulate-rugose basally, striate and punctate distally; upper paleas similar, ovate-lanceolate. 2n = 54.
Discussion
Setaria villosissima is a rare species that grows on granitic soils in southwestern Texas and northern Mexico. The villous sheaths and blades and large spikelets of S. villosissima aid in its identification. A.S. Hitchcock's (1951) report of Setaria villosissima from Arizona is based on misidentification of a specimen of S. leucophila (Reeder 1994).