Difference between revisions of "Eragrostis swallenii"
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|distribution=Tex. | |distribution=Tex. | ||
| − | |discussion=<p>Eragrostis swallenii grows in sandy sites along coastal grasslands and roadsides, often with Andropogon and Spartina, at 30-150 m. Its range extends around the Gulf coast from Texas to Mexico.</p> | + | |discussion=<p><i>Eragrostis swallenii</i> grows in sandy sites along coastal grasslands and roadsides, often with <i>Andropogon</i> and <i>Spartina</i>, at 30-150 m. Its range extends around the Gulf coast from Texas to Mexico.</p> |
|tables= | |tables= | ||
|references= | |references= | ||
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name=Eragrostis swallenii | name=Eragrostis swallenii | ||
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|authority=Hitchc. | |authority=Hitchc. | ||
|rank=species | |rank=species | ||
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|basionyms= | |basionyms= | ||
|family=Poaceae | |family=Poaceae | ||
| + | |illustrator=Linda A. Vorobik;Cindy Roché | ||
| + | |illustration copyright=Utah State University | ||
|distribution=Tex. | |distribution=Tex. | ||
|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/V25/V25_149.xml |
|subfamily=Poaceae subfam. Chloridoideae | |subfamily=Poaceae subfam. Chloridoideae | ||
|tribe=Poaceae tribe Cynodonteae | |tribe=Poaceae tribe Cynodonteae | ||
Latest revision as of 17:57, 11 May 2021
Plants perennial; cespitose, with innovations, without rhizomes. Culms 35-70 cm, erect, with glandular bands below the nodes. Sheaths hairy on the margins and at the apices, hairs to 4 mm; ligules 0.2-0.5 mm; blades (8)10-25(30) cm long, 1.5-4 mm wide, flat to involute, abaxial surfaces glabrous, adaxial surfaces scabridulous, sometimes also sparsely hairy, hairs to 4 mm. Panicles 12-30 cm long, 5-16 cm wide, ovate, open, an oblique glandular ring present below the lowest rachis node; primary branches 2-10 cm, diverging 10-70° from the rachises, flexible; pulvini glabrous; pedicels 1.5-14 mm, divergent, with a glandular band. Spikelets 5-16 mm long, 1.2-2.3 mm wide, linear-lanceolate, plumbeous to dark reddish-purple, with 5-25 florets; disarticulation acropetal, paleas persistent. Glumes ovate, membranous to hyaline; lower glumes 1.1-1.5 mm; upper glumes 1.4-2 mm; lemmas 1.5-2.5 mm, ovate, membranous, strongly keeled, keels without glands, lateral veins conspicuous, apices acute; paleas 1.2-2.1 mm, hyaline, narrower than the lemmas, apices obtuse to truncate; anthers 3, 0.3-0.5 mm, purplish. Caryopses 0.8-1.1 mm, rectangular-prismatic to ellipsoid, somewhat laterally compressed, with a well-developed adaxial groove, smooth, faintly striate, mostly opaque, light reddish-brown. 2n = 84.
Discussion
Eragrostis swallenii grows in sandy sites along coastal grasslands and roadsides, often with Andropogon and Spartina, at 30-150 m. Its range extends around the Gulf coast from Texas to Mexico.
Selected References
None.