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Sporobolus cryptandrus - sand dropseed

Scientific Family
Poaceae
Synonyms
Agrostis cryptandra,
Plant type
Grasses
Riparian
No

Grass Description

Origin
Native
Season
Warm

Found on sandy soils of dry plains, slopes, and washes, rocky slopes and limestone ridges, in desert scrub, pinyon-juniper woodlands, pine forests and desert grasslands.

Plant Community
Desert Scrub
Grasslands
Interior Chaparral
Montane Conifer Forest
Pinyon Juniper Woodlands
Low elevation
200
High elevation
7000
Similar species
Sporabolus contractus, S. flexuosus

General Description

Erect, tufted perennial grass with round, unbranched stem, 2 to 4 feet tall, depending upon precipitation. Main characteristic is the conspicuous tuft of long white hairs at the leaf collar.

Tufted erect perennial, stems sometimes bent at base. Collar and ligule hairy. Sheath often hairy on the margins. Seedhead partially included in sheath, initially contracted, open at maturity, pyramidal, densely flowered. Spikelets one flowered, unawned.

Grass type
Perennial bunchgrass
Rhizomes
No
Stolons
No
Clump Diameter 2 ft or more
No
Bushy - highly branched
No
Height with Seedheads
Greater than 36 inches
Seedhead Structure
Branched - open and spreading
Seedhead droops
No
First bloom month
June
Last bloom month
October

Flower Characteristics

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

Seedhead 6 to 20 inches long and 1/2 to 4-1/2 inches wide, partially or totally enclosed on one side by the upper sheath. Upper branches are spikelet bearing to the bases.

Vegetative Characteristics

Blade is hairy
No
Blade margins white
No
Blade cross-section
Flat
Folded

Blades often at near right angle to stem. 3 to 10 inches long, 1/4 inch wide, flat or folded. May be rolled inward when dry.

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

Fair to good for livestock and poor for wildlife while actively growing, declines rapidly with maturity.