TREATMENT FROM THE JEPSON MANUAL	previous taxon | next taxon Jepson Interchange (more information)
	©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

CYPERACEAE

SEDGE FAMILY

Raymond Cranfill, except as specified

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.

CAREX

SEDGE

Joy Mastrogiuseppe

Perennial, cespitose or from rhizomes, generally monoecious
Stem generally sharply 3-angled, generally solid
Leaves 3-ranked, generally glabrous except generally scabrous on midrib, margin; sheath closed, back (blade side of stem) green, ribbed, front generally thin, translucent, forming generally U-shaped mouth at top
Inflorescence: spikelets generally several–many, arrayed in raceme, panicle, or head-like cluster, each 1–many-flowered, generally subtended by a spikelet bract
Flowers unisexual, each subtended by 1 flower bract; perianth 0
Staminate flower: stamens generally 3
Pistillate flower enclosed by perigynium (sac-like bract); perigynium body 2–3-sided or round, wall generally delicate; perigynium beak tip open, often notched; style 1, generally deciduous, stigmas 2–4, exserted
Fruit 2–4-sided
Etymology: (Latin: cutter, from sharp leaf and stem edges)
Reference: [Standley 1985 Syst Bot Monogr 7:1–106]
Fully mature perigynia needed for identification, so are described under "FR" (long-persistent perigynia are often atypical); perigynium "front" faces spikelet axis; "fruit" refers to achene body (excluding beak). "Shredding" lower leaf sheath fronts become a network or fringe of veins; some others shred longitudinally only. Difficult because of many species and minute key characters; longer key statements and descriptions are designed to enhance both ease and probability of correct identification. Group descriptions are assumed in specific descriptions
Horticultural information: Many species especially those with rhizomes are INVASIVE. This is one of the most effective genera for knitting moist or wet soil.

Native

C. nebrascensis Dewey

(Group 6)
Leaves generally tufted at stem base; blade 3–12 mm wide, thick, generally strongly blue-glaucous
Inflorescence: lateral spikelets 3–6 cm, 5–9 mm wide, generally 2-colored, pressing ± flat; lowest spikelet bract generally > inflorescence, base often dark-margined; pistillate flower bract obtuse to awned, tip or awn glabrous, margin often white
Fruit: perigynia 30–150 per spikelet, ascending, 2.6–4 mm, 1.6–2.5 mm wide, sessile, not papillate, veined, generally ± tough, often red-dotted, beak 0.2–0.6 mm, tip brown or purple, notched > 0.1 mm, teeth minutely hairy; fruit 1.3–2 mm, 0.9–1.8 mm wide
Chromosomes: 2n=66,68
Ecology: Meadows, swamps
Elevation: < 2500 m.
Bioregional distribution: Klamath Ranges, High Cascade Range, High Sierra Nevada, Great Central Valley, Western Transverse Ranges, San Jacinto Mountains, Great Basin Floristic Province, Desert Mountains
Distribution outside California: w US
Horticultural information: WET, SUN: 1, 2, 3, 4, 5, 6, 7, 8, 9, 14, 15, 16, 17, 18; STBL.