Jepson Flora Project: Jepson Interchange    

 
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Jepson Interchange (more information)
©Copyright 1993 by the Regents of the University of California

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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.

Introduced

B. arenarius Labill.

Annual 15–60 cm
Leaf soft-hairy; blade 2–5 mm wide
Inflorescence 4–19 cm, open; branches nodding to spreading, threadlike; spikelet stalks wavy to S-shaped
Spikelet ± compressed, generally short-soft-hairy; glumes with flat to rounded back, lower 7–10 mm, generally 3-veined, upper 8–12 mm, 5–7-veined; florets (3)6–9; lemma body 7–11 mm, back rounded, 5–7-veined, teeth 0.5–2 mm, awn (6)9–14 mm
Ecology: Open, disturbed places
Elevation: < 2000 m.
Bioregional distribution: California Floristic Province, Desert
Distribution outside California: to Oregon, Arizona; native to Australia
Flowering time: Apr–Jul

Introduced

subsp. madritensis


Stem generally glabrous
Leaf: sheath generally glabrous
Inflorescence 4–11 cm, narrowly ovoid; most branches visible
Ecology: Habitats of sp.
Bioregional distribution: California Floristic Province, Desert (uncommon)
Distribution outside California: s Oregon, Baja California; native to Europe
Flowering time: Apr–Jan

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