Difference between revisions of "Aristida californica"
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| − | |discussion=<p>The range of both varieties of | + | |discussion=<p>The range of both varieties of Aristida californica extends from the southwestern United States into northwestern Mexico.</p> |
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|distribution=Calif.;Ariz. | |distribution=Calif.;Ariz. | ||
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|subfamily=Poaceae subfam. Aristidoideae | |subfamily=Poaceae subfam. Aristidoideae | ||
|tribe=Poaceae tribe Aristideae | |tribe=Poaceae tribe Aristideae | ||
Revision as of 17:19, 30 October 2019
Plants perennial; sometimes flowering the first year. Culms 10-40 cm, highly branched above the base in age; internodes glabrous or pubescent, sometimes nearly lanose. Leaves cauline; sheaths shorter than the internodes, glabrous or puberulent; collars glabrous or pubescent at the sides; ligules 0.5-1 mm; blades usually less than 6 cm long, 0.5-1 mm wide, pale green, involute, glabrous or puberulent abaxially. Inflorescences paniculate or racemose, 5-10 cm long, 1-2 cm wide, with few spikelets; rachis nodes glabrous or with straight hairs; primary branches 1-2 cm, appressed, without axillary pulvini. Spikelets appressed. Glumes unequal, 1-2-veined; lower glumes 4-10 mm; upper glumes 7-15 mm; calluses about 1 mm; lemmas 5-7 mm, purple or mottled, junction of the lemma and awns evident; awns twisted together basally into a 4-26 mm column, free portions 12-50 mm, those of the central and lateral awns similar in length, curved to arcuate basally, straight and divergent distally, disarticulating at the base of the column at maturity; anthers 3, about 2 mm long. 2n = 22.
Distribution
Calif., Ariz.
Discussion
The range of both varieties of Aristida californica extends from the southwestern United States into northwestern Mexico.
Selected References
None.
Key
| 1 | Cauline internodes puberulent to nearly lanose | Aristida californica var. californica |
| 1 | Cauline internodes glabrous | Aristida californica var. glabrata |