Muhlenbergia utilis
Aparejo grass
(c) Matt Berger, some rights reserved (CC BY), uploaded by Matt Berger · licence
Family: Poaceae · Type: Grass · Native
Conservation status: CNPS 2B.2
Muhlenbergia utilis (Aparejo grass) is a native California grass in the Poaceae family, recognized by creeping habit with small size and awnless lemmas distinctive.
Aparejo grass is a rare (CNPS 2B.2) California native perennial found in southern coastal ranges, southern California, and western Transverse Ranges in wet sites along streams and ponds at elevations of 250 to 1,000 meters. Flowering from October to March, this grass produces yellow to purple anthers in narrow inflorescences 1 to 5 centimeters long. Growing with decumbent stems 0.5 to 3 decimeters tall that often creep along the ground, it forms scaly rhizomes that spread horizontally. Its grass blades are narrow, 1 to 3.5 centimeters long and 0.6 to 1.2 millimeters wide, typically flat or slightly rolled. The plant features extremely short ligules of 0.3 to 0.8 millimeters that are truncate and extend down the leaf sheath.
Identification and appearance
Key characters: 6 sympatric species; creeping habit with small size and awnless lemmas distinctive
Habitat and range
Habitat: Wet sites along streams, ponds
Elevation: 250-1000 m
California counties: Kern, Ventura, Inyo, San Luis Obispo, San Bernardino, Monterey, Santa Barbara
Outside California: to Texas, Central America
Bloom period
Muhlenbergia utilis blooms Oct-Mar.
Conservation status
CNPS 2B.2
How to tell it apart
vs Cenchrus: Cenchrus has spiny burs enclosing seed clusters; Muhlenbergia has open panicles without spines.; vs Nassella: Nassella has prominent bent awns; Muhlenbergia awns are straight or absent.; vs Festuca: Festuca has multiple-flowered spikelets; Muhlenbergia typically has single-flowered spikelets in open panicles.; vs Carex: Carex (sedges) has triangular stems and separate male/female flowers; Muhlenbergia has round stems.; vs Juncus: Juncus (rushes) has tiny brown chaffy flowers in clusters; Muhlenbergia has typical grass spikelets.
Frequently asked questions
Is Muhlenbergia utilis native to California?
Yes. Muhlenbergia utilis is native to California (recorded as native).
When does Muhlenbergia utilis bloom?
Muhlenbergia utilis blooms Oct-Mar.
Where in California does Muhlenbergia utilis grow?
Muhlenbergia utilis occurs in Kern, Ventura, Inyo, San Luis Obispo, San Bernardino, Monterey, Santa Barbara, at elevations of 250-1000 m.
What plant family does Muhlenbergia utilis belong to?
Muhlenbergia utilis is in the Poaceae family, genus Muhlenbergia.
Is Muhlenbergia utilis rare or endangered?
Muhlenbergia utilis carries California Rare Plant Rank 2B.2, state rank S2S3.
Related species
Other California species in the same genus, family, or bioregion.
- Muhlenbergia alopecuroides — Wolftail
- Muhlenbergia andina — Foxtail muhly
- Muhlenbergia appressa — Appressed muhly
- Muhlenbergia arsenei — Tough muhly
- Muhlenbergia asperifolia — Scratch grass
- Muhlenbergia californica — California muhly
- Munroa sp.
- Munroa squarrosa — False buffalograss
- Nardus stricta — matgrass
- Nassella tenuissima — Mexican feathergrass
Sources: Jepson eFlora · Index of California Plant Names · CalPhotos · CDFW CNDDB
Last updated 2026-10-07
Data from The California Species Project — 14,000+ California species with verified data from CNPS, CDFW, USFWS, Cal-IPC, and more.