Difference between revisions of "Digitaria arenicola"
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| − | |discussion=<p | + | |discussion=<p>Digitaria arenicola is endemic to deep sands along the coast of Texas, a very restricted habitat and one that is being lost to the development of coastal parks and housing.</p> |
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|family=Poaceae | |family=Poaceae | ||
| + | |illustrator=Linda A. Vorobik and Hana Pazdírková | ||
|distribution=Tex. | |distribution=Tex. | ||
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|subfamily=Poaceae subfam. Panicoideae | |subfamily=Poaceae subfam. Panicoideae | ||
|tribe=Poaceae tribe Paniceae | |tribe=Poaceae tribe Paniceae | ||
Revision as of 16:17, 30 October 2019
Illustrator: Linda A. Vorobik, Hana Pazdírková
Copyright: Utah State University
Plants perennial; loosely tufted, with long, creeping rhizomes. Culms 20-60 cm, erect; lower nodes glabrous or pubescent; upper nodes glabrous. Leaves mainly cauline; sheaths usually glabrous, lower sheaths sometimes pubescent; ligules 0.4-1 mm, truncate, entire to lacerate; blades 5-11.5 cm long, 3-4.5 mm wide, glabrous, usually flat or folded. Panicles simple, 12-24 cm long, 19-40 cm wide, open; nodes hispid; branches divergent; lower primary branches 10-21 cm, with 1-several sterile branches near the base; pedicels divergent, spikelets solitary. Spikelets 3.5-4.6 mm long, 0.8-1 mm wide, elliptical. Lower glumes 0.2-0.5 mm; upper glumes 3-3.8 mm, 5-7-veined, densely villous between the veins, hairs white, becoming purple at maturity; lower lemmas similar to the upper glumes in size, texture, and pubescence; upper lemmas 3-3.7 mm, narrowly acute, dark brown; anthers 1.1-1.4 mm. Caryopses 1.5-2 mm. 2n = 36, 37.
Discussion
Digitaria arenicola is endemic to deep sands along the coast of Texas, a very restricted habitat and one that is being lost to the development of coastal parks and housing.
Selected References
None.