Jepson Flora Project: Jepson Interchange    

 
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Jepson Interchange (more information)
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  • Up-to-date information about California vascular plants is available from the Jepson eFlora.

Introduced

A. brachychaetum (Godr.) Barkworth


Stem 4–10 dm
Leaf: sheath glabrous; blade 1–2 mm wide
Inflorescence 20–30 cm
Spikelet: glumes 6–8 mm, ± equal; floret 4.5–5.5 mm; callus blunt; lemma tip hairs 0.8–1.7 mm, > body hairs, awn 15–20 mm, bent twice
Ecology: Disturbed sites
Elevation: < 300 m.
Bioregional distribution: nw San Joaquin Valley (eradicated from San Joaquin Valley in Fresno Co.), n South Coast
Distribution outside California: native to Argentina
Synonyms: Stipa b. Godr
Weedy.

Native

C. canadensis (Michx.) P. Beauv.


Stem 6–15 dm, generally branched; nodes 3–8
Leaf: sheath glabrous to hairy near collar; ligule 3–8 mm, fringed; blade 3–8 mm wide, ± drooping, flat, scabrous
Inflorescence 10–25 cm, open to dense; lower branches < 3–8 cm, ± spreading
Spikelet: glumes 3–4.5 mm, scabrous, keel long scabrous, generally purplish; axis sparsely long-hairy; callus hairs ± = lemma, dense; lemma 2.5–4.5 mm, thin, awned just below middle; awn extending ± to lemma tip, straight
Chromosomes: 2n=42–66
Ecology: Moist meadows, bogs, open woodlands
Elevation: 1500–3400 m.
Bioregional distribution: Klamath Ranges, High Cascade Range, High Sierra Nevada
Distribution outside California: to Alaska, e US
Plants with callus hairs 1/2 lemma length may be hybrids with C. nutkaensis and have been called C. lactea Beal. Some plants set seed asexually
Horticultural information: TRY.

Native

subsp. stricta


Stem 2–9 dm
Leaf: ligule 1–3.5 mm; blade generally inrolled, upper surface smooth to scabrous
Inflorescence 5–12 cm; longest branches < 4 cm
Spikelet: glumes 2–4.5 mm, generally thin, margin sometimes translucent; callus hairs 1/2–3/4 lemma; lemma 2–4 mm; awn straight, slender; anthers generally fertile
Chromosomes: 2n=28,42,56,±70
Ecology: Coniferous forest, meadows, slopes
Elevation: 1500–3350 m.
Bioregional distribution: High Sierra Nevada, White and Inyo Mountains
Distribution outside California: to Alaska, ne N.America, Eurasia

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