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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This page was last edited on 22 Marchat FNAGould Flora of North America Plants perennial; cespitose, rhizomatous. It is especially valuable during drought when it persists after other grasses die. Retrieved January 15, The hilarua of the stems come from a thick, woody rootstock and a system of roots that penetrates up to 1.

Panicles cm; fascicles mm.

In Texasit yields pounds per acre, and this can be increased with careful hilaeia deliberate management. 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.

Vascular Plants of the Gila Wilderness

Retrieved from ” https: It also grows on drier soils, and it is somewhat drought -tolerant. Pleuraphis mutica Conservation status. The grass can cause ergot poisoning if eaten when infested with the fungus. The inflorescence is a few centimeters long and is white, strawor purplish.

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Views Read Edit View history. The 3 spikelets fall as a unit and leave a characteristic zig-zag naked seed stalk. Spikelets are borne in clusters of three. Habitat types that feature the grass include pinyon-juniper woodland and mesquite, creosote, and grassy shrubsteppe. It also occurs on upland territory. Articles with ‘species’ microformats.

By using this site, you agree to the Terms of Use and Privacy Policy. 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.

Log In New Account Sitemap. Hilaria mutica grows in level upland areas and desert valleys subject to occasional flooding but lacking permanent streams. In areas with adequate precipitation, burning is used to remove litter, which then stimulates the stems to produce more green matter. Sheaths glabrous or sparsely pilose on the margins; ligules 0.

Hilaria mutica Buckley Benth. The jutica reproduces mainly by spreading by its rhizome, and does not often form viable seeds. 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.


Rhizomatous perennial grass; stems cm, erect, geniculate at the middle nodes, slender, tough and wiry; glabrous or scabrous-puberulent at the nodes. Pleuraphis mutica is one of the most common species on the semidesert grasslands in the region. It is productive and palatable until it becomes rough at maturity. Culms cm, erect, geniculate at the middle nodes; nodes glabrous or pubescent, hairs to 0.


Hilaria mutica

Pleuraphis mutica is a species of grass known by the common name tobosaor tobosa grass. Very drought tolerant, this species has the ability to become totally dormant as soil moisture drops. Fire Effects Information System, [Online]. Hilariaa of North America.

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

In other projects Wikispecies. Its range extends into northern Mexico. It does best on land that is flooded for a few days and then dries up.

The culms are not felty pubescent as in H.