The scientific name of tobosagrass is Pleuraphis mutica Buckley (Poaceae) [71, 79,81,95]. SYNONYMS: Hilaria mutica (Buckl.) Benth. [1,6,57,71,78,79,82,95]. Name. Hilaria mutica (Buckley) Benth., Pleuraphis mutica Buckley Hilaria mutica in World Checklist of Selected Plant Families. Pleuraphis mutica. Pleuraphis mutica Buckley. Tobosa Grass, Tobosagrass. Poaceae (Grass Family). Synonym(s): Hilaria mutica.
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Habitat types that feature the grass include pinyon-juniper woodland and mesquite, creosote, and grassy shrubsteppe. Sheaths glabrous or sparsely pilose on the margins, blades mm wide, cm long, flat or rolled, glabrous to scabrous with papillose-based hairs behind the ligules; ligules 0. Retrieved from ” https: The 3 spikelets fall as a unit and nutica a characteristic zig-zag naked seed stalk.
Spikelets are borne in clusters of three. This page was last edited on 22 Marchat It also grows on drier soils, and it is somewhat drought -tolerant. Sheaths glabrous or sparsely pilose on the margins; ligules 0. Tobosa is an important forage for cattle and horses in the American Southwest.
It is especially valuable during drought when it persists after other grasses die. Central hklaria with 1 bisexual floret; glumes with 1 hilria more divergent, dorsal awns, apical lobes, ciliate to finely laciniate, mtuica excurrent; lemmas exceeding the glumes, bilobed, mucronate. Pleuraphis mutica is perennial grass that is rhizomatous and forms sod. Lateral spikelets with 1 or 2 4 staminate florets; glumes not conspicuously fused basally, thin, papery, flabellate, dorsally awned, awns not exceeding the apices, apical lobes rounded, ciliate to finely laciniate, veins not or scarcely excurrent; anthers 3, 2.
It is productive and palatable until it becomes rough at maturity. In Texasit yields pounds per acre, and this can be increased with careful and deliberate management.
The culms are not felty pubescent as in H.
Articles with ‘species’ microformats. Flora of North America. Most of the stiff, hairless leaves are basal. Spikes cm long with spikelet clusters, these mostly mm long; the clusters have 3 spikelets and disarticulate as a unit, leaving zig-zag rachises; the three spikelets hilarka subequal, with tuft of hairs mostly mm long at the base; glumes thin, papery, dorsally awned, awns not exceeding apices, veins excurrent; lemmas longer than glumes.
The grass can cause ergot poisoning if eaten when infested with the fungus. It can be cut into hay when still green. The inflorescence is a few centimeters long and is white, strawor purplish. It does mutiica on land that is flooded for a few days and then dries up.
The stems have decumbent bases and erect tops.
Hilairea French naturalist; mutica means blunt, probably referring to the shape of the glumes. Retrieved January 15, The plant reproduces mainly by spreading by its rhizome, and does not often form viable seeds. Hilaria is named for Auguste St. Log In New Account Sitemap.
Lady Bird Johnson Wildflower Center – The University of Texas at Austin
The genus is distinguished by the rigid inflorescence spikes muticw produce groups of 3 sessile, awned spikelets, that when mature, have conspicuous tan-white papery bracts glumes which often splay out. It also occurs on upland territory. Plants perennial; cespitose, muica.
Views Read Edit View history. Pleuraphis mutica is one of the most common species on the semidesert grasslands in the region.
In other projects Wikispecies. Pleuraphis mutica Conservation status. Culms cm, erect, geniculate at the middle nodes; nodes glabrous or pubescent, hairs to 0. Pleuraphis mutica is a species of grass known by the common name tobosaor tobosa grass. Flora of North America Plants perennial; cespitose, rhizomatous. Go To Encyclopedia of Life Found on dry, exposed, sandy to rocky slopes and plains, from 2, ft m ; flowers throughout the year.
Its range hilarix into northern Mexico. From Wikipedia, the free encyclopedia. The bases of the stems come from a thick, woody rootstock and a system of roots that penetrates up to 1.