Jepson Flora Project: Jepson Interchange    

 
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Jepson Interchange (more information)
©Copyright 1993 by the Regents of the University of California
For up-to-date information about California vascular plants, visit the Jepson eFlora.

POACEAE

GRASS FAMILY

James P. Smith, Jr., except as specified

Annual to bamboo-like; roots generally fibrous
Stem generally round, hollow; nodes swollen, solid
Leaves alternate, 2-ranked, generally linear; sheath generally open; ligule membranous or hairy, at blade base
Inflorescence various (of generally many spikelets)
Spikelet: glumes generally 2; florets (lemma, palea, flower) 1–many; lemma generally membranous, sometimes glume-like; palea generally ± transparent, ± enclosed by lemma
Flower generally bisexual, minute; stamens generally 3; stigmas generally 2, generally plumose
Fruit: achene-like grain
Genera in family: 650–900 genera; ± 10,000 species: worldwide; greatest economic importance of any family (wheat, rice, maize, millet, sorghum, sugar cane, forage crops, ornamental, weeds; thatching, weaving, building materials)
Reference: [Hitchcock 1951 Manual grasses US, USDA Misc Publ 200; Clayton & Renvoise 1986 Kew Bull Add Series 13]
See Glossary p. 26 for illustrations of general family characteristics. Generally wind-pollinated.

GLYCERIA

MANNAGRASS

Mary E. Barkworth

Perennial from rhizomes
Stem: base decumbent, erect above, generally rooting at lower nodes
Leaf: sheath closed to near top; ligule thin, membranous, acute; blade flat or folded, only midrib prominent
Inflorescence panicle-like, 15–50 cm, nodding
Spikelet: glumes < lowest floret, margin translucent, 1-veined; axis breaking above glumes and between florets; florets 8–15; lemma strongly 5–11-veined, veins not converging, ending short of tip, tip margin translucent; palea ± = lemma, keels prominent, ± curved
Species in genus: ± 40 species: temp worldwide
Etymology: (Greek: sweet, from taste of grain)
Reference: [Church 1949 Amer J Bot 36:155–165]
See also Catabrosa, Torreyochloa, Puccinellia
Horticultural information: STBL.

Native

G. striata (Lam.) Hitchc.


Stem 3–13 dm, 2–5 mm diam
Leaf: ligule 1–3.5 mm; blade 2–8 mm wide, firm
Inflorescence 6–25 cm; branches spreading
Spikelet 2.5–4.5 mm, ovoid; lower glume 0.4–0.8 mm, upper 0.7–1.2 mm; florets 3–6; lemma widest above middle; palea tip narrowly notched
Chromosomes: n=20
Ecology: Common. Wet meadows, stream margins, coniferous forest
Elevation: 1500–2500 m.
Bioregional distribution: Klamath Ranges, North Coast Ranges, Cascade Range, n&c High Sierra Nevada, Modoc Plateau
Distribution outside California: to British Columbia, Rocky Mtns

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bioregional map for GLYCERIA%20striata being generated
 
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Retrieve Jepson Interchange Index to Plant Names entry for Glyceria striata
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