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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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.

ZIZANIA

WILD RICE

Annual, perennial herb, monoecious, aquatic
Stems erect, < 3 m, 1 cm wide
Leaf: ligule membranous, narrow; blade < 1.2 m, 2.5 cm wide
Inflorescence panicle-like; lower branches spreading to ascending, bearing staminate spikelets; upper branches ascending to erect, bearing pistillate spikelets
Staminate spikelet generally drooping; glumes vestigial, forming a collar-like ridge; floret 1; lemma linear, 5-veined, acuminate or awned; palea 3-veined; stamens 6
Pistillate spikelet generally ascending to erect, cylindric, angled, firm; glumes generally 0; floret 1, lemma 3-veined, long-tapered, awned
Fruit 1–2 cm, cylindric, purplish black
Species in genus: 3 species: North America, e Asia
Etymology: (Greek: ancient name for weed in grain fields)
Reference: [Dore 1969 Canada Dept Agric Res Publ 1393]

Introduced

Z. palustris L. var. interior (Fassett) Dore

WILD RICE


Stem puberulent at nodes
Leaf 15–45 cm, 6–40 mm wide
Inflorescence 2–5 dm
Staminate spikelet 6–8 mm
Pistillate spikelet 10–20 mm; awn 5–40 mm
Chromosomes: 2n=30
Ecology: Wet meadows, shallow ponds, lake margins
Elevation: < 1200 m.
Bioregional distribution: Inner North Coast Ranges, Sacramento Valley, Modoc Plateau
Distribution outside California: native to Canada, e US
Cult for food, waterfowl.

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bioregional map for ZIZANIA%20palustris%20var.%20interior being generated
 
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Retrieve Jepson Interchange Index to Plant Names entry for Zizania palustris var. interior
Retrieve dichotomous key for Zizania
Overlay Consortium of California Herbaria specimen data by county on this map
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