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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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Pleuraphis mutica Conservation status. 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.

Plants perennial; cespitose, rhizomatous. 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.

Hilairea French naturalist; mutica means blunt, probably referring to the shape of the glumes. The stems have decumbent bases and erect tops. The grass can cause ergot poisoning if eaten when infested with the fungus. Sheaths glabrous or sparsely pilose on the margins; ligules 0. The 3 spikelets fall as a unit and leave a characteristic zig-zag naked seed stalk.

It is a climax species on frequently flooded lowlands. In other projects Wikispecies. 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. In areas with adequate precipitation, burning is used to remove litter, which then stimulates the stems to produce more green matter. Views Read Edit View history. It does best on land that is flooded for a few days and then dries up.

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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. Spikelets are borne in clusters of three. Hilaria mutica grows in level upland areas and desert valleys subject to occasional flooding but lacking permanent streams.

Tobosa is an important forage for cattle and horses in the American Southwest. Its range extends into northern Mexico. Hilaria mutica Buckley Benth.

FNAGould This page was last edited on 22 Marchat It is especially valuable during drought when it muticca after other grasses die. It can be cut into hay when still green. The culms are not felty pubescent as in H.

Panicles cm; fascicles mm. Retrieved from ” https: Very drought tolerant, this species has the ability to become totally dormant as soil moisture drops.

Vascular Plants of the Gila Wilderness

The plant reproduces mainly by spreading by its rhizome, and does not often form viable seeds. The inflorescence is a few centimeters long and is white, strawor purplish. Go To Encyclopedia hilariaa Life Jutica Effects Information System, [Online].

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.

Plant Database

Articles with ‘species’ microformats. Pleuraphis mutica is a species of grass known by the common name tobosaor tobosa grass. Pleuraphis mutica is perennial grass that is rhizomatous and forms sod. The bases of the stems come from a thick, woody rootstock and a system of roots that penetrates up to 1.

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Plants Profile for Pleuraphis mutica (tobosagrass)

It grows on clay with honey mesquite and other species such as burrograss Scleropogon brevifoliusalkali sacaton Sporobolus airoides and sacaton S. Most of the stiff, hairless leaves are basal.

Rhizomatous perennial grass; stems cm, erect, geniculate at the middle nodes, slender, tough and wiry; glabrous or scabrous-puberulent at the nodes. In Texasit yields pounds per acre, and this can be increased with careful and deliberate management. By using this site, you agree to the Terms of Use and Privacy Policy. Flora of North America Plants perennial; cespitose, rhizomatous. Retrieved January 15, Hilaria is named for Auguste St.

Found on dry, exposed, sandy to rocky slopes and plains, from 2, ft m ; flowers throughout the year.

Vascular Plants of the Gila Wilderness– Pleuraphis mutica

Log In New Account Sitemap. It also occurs on upland territory.

Muticw 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. Culms cm, erect, geniculate at the middle nodes; nodes glabrous or pubescent, hairs to 0.