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 or perennial herb, often rhizomed, often of wet open places, generally monoecious; roots fibrous, hairy
Stem generally 3-sided
Leaves often 3-ranked; sheath generally closed; ligule generally 0; blade (0) various, parallel-veined
Inflorescence: spikelets variously clustered; flowers generally sessile in axil of flower bract
Flower small, generally wind-pollinated; perianth 0 or bristle-like; stamens generally 3, anthers attached at base, 4-chambered; ovary superior, 1-chambered, 1-ovuled, style 2–3-branched
Fruit: achene, generally 3-sided
Genera in family: ± 110 genera, 3600 species: worldwide, especially temp
Reference: [Tucker 1987 J Arnold Arbor 68:361–445]
Difficult: taxa differ in technical characters of inflorescence and fruit.
Species in genus: 1 sp
Etymology: (Latin: for some sedge)
| Native |
Plant < 10 dm, strongly rhizomed
Leaves cauline, 2–8 cm, 4–8 mm wide, sheathing; uppermost 3-ranked
Inflorescence: spikelets in axillary, raceme-like clusters that emerge from leaf sheaths, generally 5–25 mm; flower bracts 2-ranked, 3–8 mm, strongly veined, tip acute or short-pointed, margin translucent
Flowers bisexual; perianth bristles 5–8, ± 3–8 mm, persistent in fruit, barbs reflexed; stamens 3; stigma 2-branched
Fruit linear-ellipsoid, ± flat, yellow; beak long
Chromosomes: 2n=32
Ecology: Uncommon. Lake, pond margins, often in standing water
Elevation: 1500–2400 m.
Bioregional distribution: Klamath Ranges, Cascade Range, Sierra Nevada
Distribution outside California: to British Columbia; also e N.America
Known as fossil from Eur, e AsiaHorticultural information: IRR or WET, SUN: 1, 2 3, 4, 5, 6, 7, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24.
| 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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