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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The plant reproduces mainly by spreading by its rhizome, and does not often form viable seeds. Most of the hilariia, hairless leaves are basal. Culms cm, erect, geniculate at the middle nodes; nodes glabrous or pubescent, hairs to 0. The stems have decumbent bases and erect tops. The inflorescence is a few centimeters long and is muhica, strawor purplish.

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.

Flora of North America Plants perennial; cespitose, rhizomatous. The culms are not felty pubescent as in H. By using this site, you agree to the Terms of Use and Privacy Policy.

It is especially valuable during drought when it persists after other grasses die. Retrieved January 15, Pleuraphis mutica is one of the most common species on the semidesert grasslands in the region. In Texasit yields pounds per acre, and this can be increased with careful and deliberate management. Sheaths glabrous or sparsely pilose on the margins; ligules 0. Flora of North America.

Vascular Plants of the Gila Wilderness– Pleuraphis mutica

Very drought tolerant, this species has the ability to become totally dormant as soil moisture drops. Hilairea French naturalist; hiladia means blunt, probably referring to the shape of the glumes. Views Read Edit View history. Pleuraphis mutica is perennial grass that is rhizomatous and forms sod. In other projects Wikispecies. It also occurs on upland territory. It grows on clay with honey mesquite and other species such as burrograss Scleropogon brevifoliusalkali sacaton Sporobolus airoides and sacaton S.


Its range extends into northern Mexico. It also grows on hilarua soils, and it is somewhat drought -tolerant. The grass can cause ergot poisoning if eaten when infested with the fungus.

From Wikipedia, the free encyclopedia. Articles with ‘species’ microformats.

SEINet Portal Network – Hilaria mutica

Rhizomatous perennial grass; stems cm, erect, geniculate at the middle nodes, slender, tough and wiry; glabrous or scabrous-puberulent at the nodes. The 3 spikelets fall as a unit and leave a characteristic zig-zag naked seed stalk. Spikelets are borne in clusters of three. It is productive and palatable until it becomes rough at maturity. It does best on land that is flooded for a few days and then dries hilarka. Fire Effects Information System, [Online]. Pleuraphis mutica is a species of grass known by the common name tobosaor tobosa grass.

Habitat types that feature the grass include pinyon-juniper woodland and mesquite, creosote, and grassy shrubsteppe.

Hilaria mutica

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


Lateral spikelets with 1 or 2 4 hilariw 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. Log In New Account Sitemap. Hilaria mutica Buckley Mutida. It can be cut into hay when still green. Hilaria is named for Auguste St. FNAGould Retrieved from ” https: This page was last edited on 22 Marchat 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.

Go To Encyclopedia of Life Sheaths glabrous or sparsely pilose on hilafia margins, blades mutic wide, cm long, flat or rolled, glabrous to scabrous with papillose-based hairs behind the ligules; ligules 0.

Pleuraphis mutica Conservation status.

Vascular Plants of the Gila Wilderness

Hilaria mutica grows in level upland areas and desert valleys subject to occasional flooding but lacking permanent streams. Plants perennial; cespitose, rhizomatous.

It is a climax species on frequently flooded lowlands. Panicles cm; fascicles mm. Tobosa is an important forage for cattle and hioaria in the American Southwest.

Found on dry, exposed, sandy to rocky slopes and plains, from 2, ft m ; flowers throughout the year. In areas with adequate precipitation, burning is used to remove litter, which then stimulates the stems to produce more green matter.