Jepson Interchange (more information)
Print edition is available from the University of California Press
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This page is based on the 1993 Jepson Manual.
Please see the Jepson eFlora for up-to-date information about California vascular plants. |
| Jepson Flora Project: Jepson Interchange |
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TREATMENT FROM THE JEPSON MANUAL |
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Jepson Interchange (more information) |
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©Copyright 1993 by the Regents of the University of California
Print edition is available from the University of California Press |
| The second edition of The Jepson Manual (2012) is available from the University of California Press | |
| See also the Jepson eFlora, which parallels the Second Edition |
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).[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.
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, PuccinelliaHorticultural information: STBL.
| Native |
Stem 7–15 dm, 1.5–2 mm diam
Leaf: ligule 5–12 mm; blade 4–13 mm wide
Inflorescence 15–40 cm, narrow; spikelets appressed
Spikelet 15–20 mm, cylindric; lower glume 1.5–3.5 mm, upper 2.5–5 mm; florets 6–13; lemma 3.5–4.5 mm, tip margin irregular, longest between veins
Chromosomes: n=20
Ecology: Uncommon. Wet places
Elevation: < 1300 m.
Bioregional distribution: North Coast, Outer North Coast Ranges, n High Sierra Nevada, Sacramento Valley, Central Coast
Distribution outside California: to British Columbia, Idaho
| YOU CAN HELP US make sure that our distributional information is correct and current. If you know that a plant occurs in a wild, reproducing state in a Jepson bioregion NOT highlighted on the map, please contact us with that information. Please realize that we cannot incorporate range extensions without access to a voucher specimen, which should (ultimately) be deposited in an herbarium. You can send the pressed, dried collection (with complete locality information indicated) to us (e-mail us for details) or refer us to an accessioned herbarium specimen. Non-occurrence of a plant in an indicated area is difficult to document, but we will especially value your input on those types of possible errors (see automatic conversion of distribution data to maps). |
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