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Panicum obtusum - vine mesquite

Scientific Family
Poaceae
Synonyms
Hopia obtusa
Other common names
vine mesquite grass
vine-mesquite
Plant type
Grasses
Riparian
Yes

Grass Description

Origin
Native
Season
Warm

Found in periodically wet soils in grasslands; disturbed areas; along stream banks, ditches, roadsides, pastures.

Plant Community
Disturbed Areas
Grasslands
Riparian
Low elevation
1000
High elevation
6000

General Description

Bluish-green stoloniferous and sometimes rhizomatous, up to 2-1/2 feet tall grass that forms dense stands. Stems are wiry and smooth with swollen and densely hairy nodes.

Stolons to 3 feet, stems to 2-1/2 feet, collars densely hairy. Blades bluish-green flat or involute, prominent white mid-vein. Seedhead narrow; short appressed branches; spikelets rounded, 2-flowered; glumes similar in length; glumes,lemma not hairy.

Grass type
Perennial mat or sod-forming
Rhizomes
Yes
Stolons
Yes
Clump Diameter 2 ft or more
No
Bushy - highly branched
No
Height with Seedheads
24 inches or more
Seedhead Structure
Branched - contracted
Seedhead droops
No
First bloom month
May
Last bloom month
October

Flower Characteristics

Flowers per Spikelet
Multi-flowered
Spikelets One-Sided
No
Awns
Absent
Three Awns
No
Awns bent
No
Flower and Seedhead Notes

Seedhead is narrow and contracted with short simple, appressed branches. Spikelets are 2-flowered with one fertile floret. Spikelets are wrapped in bracts with vertical green veins, the purple stigmas usually peeking out before seeds ripen.

Vegetative Characteristics

Blade is hairy
No
Blade margins white
No
Blade cross-section
Flat
Involute – rolled inward on upper surface

Blades are 2 to 8 inches long, flat or loosely inrolled and light bluish-green in color. The mid-vein is white and prominent.

Sheath is hairy
Yes
Tufts of hair top of sheath or collar
No
Ligule
Membranous
Auricles
No

Fair to good for wildlife and livestock. Quail and doves eat the seed in the fall and early winter.