Difference between revisions of "Sporobolus texanus"
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|common_names=Texas dropseed | |common_names=Texas dropseed | ||
| + | |special_status={{Treatment/ID/Special_status | ||
| + | |code=E | ||
| + | |label=Endemic | ||
| + | }} | ||
|basionyms= | |basionyms= | ||
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name=Sporobolus texanus | name=Sporobolus texanus | ||
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|authority=Vasey | |authority=Vasey | ||
|rank=species | |rank=species | ||
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|basionyms= | |basionyms= | ||
|family=Poaceae | |family=Poaceae | ||
| + | |illustrator=Linda A. Vorobik;Hana Pazdírková | ||
| + | |illustration copyright=Utah State University | ||
|distribution=Kans.;Nebr.;Okla.;Colo.;N.Mex.;Tex.;Utah;Ariz. | |distribution=Kans.;Nebr.;Okla.;Colo.;N.Mex.;Tex.;Utah;Ariz. | ||
|reference=None | |reference=None | ||
|publication title= | |publication title= | ||
|publication year= | |publication year= | ||
| − | |special status= | + | |special status=Endemic |
| − | |source xml=https:// | + | |source xml=https://bitbucket.org/aafc-mbb/fna-data-curation/src/200273ad09963decb8fc72550212de541d86569d/coarse_grained_fna_xml/V25/V25_682.xml |
|subfamily=Poaceae subfam. Chloridoideae | |subfamily=Poaceae subfam. Chloridoideae | ||
|tribe=Poaceae tribe Cynodonteae | |tribe=Poaceae tribe Cynodonteae | ||
Latest revision as of 17:58, 11 May 2021
Plants perennial (often appearing annual); cespitose, with fibrous roots, not rhizomatous. Culms 20-70 cm, erect to decumbent, glabrous or scurfy roughened below. Sheaths rounded basally, apices glabrous or with scattered, appressed, papillose-based hairs, hairs to 4 mm; ligules 0.2-0.6 mm; blades 2.5-13(18) cm long, 1-4.2 mm wide, flat to involute, glabrous abaxially, scabrous adaxially, margins scabridulous, often also with a few papillose-based hairs; flag blades ascending. Panicles 10-35 cm long, 4.5-30 cm wide, open, diffuse, subpyramidal, about as long as wide, partially included in the uppermost leaf sheath; lower nodes with 1-2 branches; primary branches 4-14 cm, capillary, spreading 10-80° from the rachis; secondary branches spreading, without spikelets on the lower 1/3 - 1/2; pedicels 6-25 mm, spreading. Spikelets 2.3-3 mm, purplish-tinged. Glumes unequal, linear-lanceolate to lanceolate, membranous; lower glumes 0.5-1.7 mm, often without midveins; upper glumes 1.7-3 mm, at least 2/3 as long as the florets, often longer; lemmas 1.8-3 mm, lanceolate to ovate, membranous, glabrous, acute; paleas 1.7-2.9 mm, ovate, membranous, glabrous, often splitting as the fruit matures; anthers 0.3-1 mm, yellowish. Fruits 1.1-1.5 mm, obovoid, light brown, translucent, occasionally rugulose. 2n = unknown.
Distribution
Kans., Nebr., Okla., Colo., N.Mex., Tex., Utah, Ariz.
Discussion
Sporobolus texanus grows along rivers, ponds, and in wet alkaline habitats, at 100-3300 m. It is known only from the United States.
Selected References
None.