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.

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. elata (Lam.) Hitchc.

FOWL MANNAGRASS


Stem 6–15 dm, 3–5 mm diam
Leaf: ligule 2–6 mm; blade 4–12 mm wide, thin
Inflorescence 15–25 cm; branches spreading
Spikelet 2.5–5 mm, ovoid; lower glume 0.8–1.2 mm, upper 1–1.5 mm; florets 4–7; lemma widest above middle; palea tip narrowly notched
Chromosomes: n=10
Ecology: Common. Wet places, coniferous forest
Elevation: < 2600 m.
Bioregional distribution: North Coast, Sierra Nevada, San Bernardino Mountains, San Jacinto Mountains
Distribution outside California: to British Columbia, New Mexico
Intergrades with G. grandis , G. striata.

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