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Muhlenbergia dumosa - bamboo muhly

Scientific Family
Poaceae
Plant type
Grasses
Riparian
No

Grass Description

Origin
Native
Season
Cool

Found on dry rocky slopes, canyon ledges, and along cliffs. When protected from grazing animals it grows in oak-pine and thorn-scrub forests and oak-grama grasslands.

Plant Community
Desert Scrub
Grasslands
Interior Chaparral
Pinyon Juniper Woodlands
Low elevation
0
High elevation
6000

General Description

Perennial bunchgrass with a thick, hard, rhizomatous base. Stems are fibrous or woody and often persist for more than one season.

Perennial, woody at the base, freely branching at the middle and upper nodes; rhizomes prominent and scaly; blades rolled inward, less than 1/16 inches long; seedhead stems up to 9 feet tall; seedhead narrow and condensed; spikelets on short stems.

Grass type
Perennial bunchgrass
Rhizomes
Yes
Stolons
No
Clump Diameter 2 ft or more
Yes
Bushy - highly branched
Yes
Height with Seedheads
Greater than 36 inches
Seedhead Structure
Branched - contracted
Seedhead droops
Yes
First bloom month
January
Last bloom month
May

Flower Characteristics

Flowers per Spikelet
One-flowered
Spikelets One-Sided
No
Awns
1/4 inch to 1 inch
Three Awns
No
Awns bent
No
Flower and Seedhead Notes

Seedhead is often shorter than the leaves; up to 1 inch long, narrow and somewhat bent. Spikelets are 1/8 inch long. Lemma is narrow, hairy at the base and margins, and pale with green nerves.

Vegetative Characteristics

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

Branch leaves are less than 1/16 inch wide and 1/4 inch or less long; smooth on the bottom and covered with fine short stiff hairs on top.

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

Poor.