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Leymus triticoides - beardless wildrye

Scientific Family
Poaceae
Synonyms
Elymus triticoides
Other common names
creeping wildrye
alkali ryegrass
valley wildrye
Plant type
Grasses
Riparian
Yes

Grass Description

Origin
Native
Season
Warm

Found in seasonally moist areas such as meadows. Tolerates neutral to strongly alkaline soils (pH 6.0 to 9.0), moderate shading, 7 to 60 inches of precipitation, and soils classified as strongly saline.

Plant Community
Riparian
Low elevation
2500
High elevation
8500

General Description

Large grass; strongly rhizomatous growth form; stems emerge singly or in small clusters. Blades are mostly basally concentrated.

Grows up to 4 feet tall. Strongly rhizomatous, often in large colonies. Lemmas tips acute. Bottom surfaces of the blades usually with closely spaced, prominently ribbed, subequal veins.

Grass type
Perennial mat or sod-forming
Rhizomes
Yes
Stolons
No
Clump Diameter 2 ft or more
No
Bushy - highly branched
No
Height with Seedheads
Greater than 36 inches
Seedhead Structure
Unbranched
Seedhead droops
No
First bloom month
June
Last bloom month
July

Flower Characteristics

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

The spike is narrow and 2 to 8 inches long, 2 spikelets per node at midspike, sometimes 1 or 3 at other nodes. Spikelets have 3 to 7 alternately stacked florets, each with a small awn less than 1/8 inch long.

Vegetative Characteristics

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

Blades are stiff, bluish green, and slightly waxy. They may be flat or rolled under along the edges, 4 to 12 inches long and up to 1/4 inch wide. Leaves stand away from the stems at an obvious angle. Upper leaf surface is rough and may be slightly hairy.

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

Beardless wildrye is moderately palatable to all livestock, especially in the early spring before it becomes coarse. It tolerates trampling and recovers well following grazing.