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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[edit]. 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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Rhizomatous mutuca grass; stems cm, erect, geniculate at the nilaria nodes, slender, tough and wiry; glabrous or scabrous-puberulent at the nodes. Hilaria mutica Buckley Benth. This page was last edited on 22 Marchat The inflorescence is a few centimeters long and is white, strawor purplish.

It is a climax species on frequently flooded lowlands. Pleuraphis mutica is one of the most common species on the semidesert grasslands in the region. Hilaria is named for Auguste St. It also grows on drier soils, and it is somewhat drought -tolerant.

Habitat types that feature the grass include pinyon-juniper woodland and mesquite, creosote, and grassy shrubsteppe. Flora of North America Plants perennial; cespitose, rhizomatous.

Hilaria mutica grows in muhica upland areas and desert valleys subject to occasional flooding but lacking permanent streams.

Lady Bird Johnson Wildflower Center – The University of Texas at Austin

It does best on land that is flooded for a few days and then dries up. Tobosa is an important forage for cattle and horses in the American Southwest. Spikelets are borne in clusters of three. It can be cut into hay when still green.


Hilaria mutica

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.

Hilqria Read Edit View history. Panicles cm; fascicles mm. Log In New Account Sitemap. Sheaths glabrous or sparsely pilose on the ,utica ligules 0. Found on dry, exposed, sandy to rocky slopes and plains, from 2, ft m ; flowers throughout the year. Very drought tolerant, this species has the ability to become totally dormant as soil moisture drops. It is especially valuable during drought when it persists after other grasses die.

Plant Database

Articles with ‘species’ microformats. Hilairea French naturalist; mutica means blunt, probably referring to the shape of the glumes. Most of the stiff, hairless leaves are basal. Central spikelets with 1 bisexual floret; glumes with 1 or more divergent, dorsal awns, apical lobes, ciliate to finely laciniate, veins excurrent; lemmas exceeding the glumes, bilobed, mucronate. In areas with adequate precipitation, burning is used to remove litter, which then stimulates the stems to produce more green matter.

Culms cm, erect, geniculate at the middle nodes; nodes glabrous or pubescent, hairs to 0. In other projects Wikispecies.

Its range extends into northern Mexico. 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.

The plant reproduces mainly by spreading by its rhizome, and does not often form viable seeds. Retrieved from ” https: From Wikipedia, the free encyclopedia. Retrieved January 15, The genus is distinguished by the rigid inflorescence spikes which produce groups of 3 sessile, awned spikelets, that when mature, have conspicuous tan-white papery bracts glumes which often splay out.


Pleuraphis mutica is perennial grass that is hilarria and forms sod. The stems have decumbent bases and erect tops. The culms are not felty pubescent as in H. In Texasit yields pounds per acre, and this can be increased with careful and deliberate management. The 3 spikelets fall as a unit and leave hilariz characteristic zig-zag naked seed stalk.

It is productive and palatable until it becomes rough at maturity. It also occurs on upland territory. FNAGould Go To Encyclopedia of Life Fire Effects Information System, [Online].

Plants perennial; cespitose, rhizomatous. By using this site, you agree to the Terms of Use and Privacy Policy. The grass can cause ergot poisoning if eaten when infested with the fungus.

Pleuraphis mutica is a species of grass known by the common name tobosaor tobosa grass. Flora of North America.

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 are 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 bases of the stems come from a thick, woody rootstock and a system of roots that penetrates up to 1.