|Jepson Flora Project: Jepson Interchange|
|TREATMENT FROM THE JEPSON MANUAL (1993)||
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Jepson Interchange (more information)
©Copyright 1993 by the Regents of the University of California
For up-to-date information about California vascular plants, visit the Jepson eFlora.
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 23-branched
Fruit: achene, generally 3-sided
Genera in family: ± 110 genera, 3600 species: worldwide, especially temp
Reference: [Tucker 1987 J Arnold Arbor 68:361445]
Difficult: taxa differ in technical characters of inflorescence and fruit.
Annual or perennial herb
Stem generally round, ridged and grooved, generally solid
Leaves basal, 1(4); base sheathing; blade generally 0
Inflorescence: spikelet solitary, terminal, erect; spikelet bract 0; flower bracts generally spiraled
Flowers bisexual; perianth bristles 06, persistent, barbs generally recurved; stamens (1)3; style 23-branched, base bulb-like, persistent
Fruit 23-sided or round; top tubercled
Species in genus: ± 250 species: worldwide
Etymology: (Greek: marsh grace)
St shape best seen in fresh material (or just below spikelet); drying exaggerates ridges and grooves.
Perennial 15 dm; rhizome long, reddish
Stem not glaucous
Leaf purplish brown, becoming straw-colored above; tip truncate, 1-toothed
Inflorescence: spikelet 38 mm, ± as wide as stem, oblong to ovate, generally 10many-flowered, tip obtuse to acute; flower bract brownish to yellowish, margin translucent, tip obtuse
Flower: style 3-branched
Fruit: perianth bristles 26, generally < fruit; body ± 1 mm, obovate, weakly 3-sided, yellowish brown, shiny; tubercle short, conic, base slightly narrowed
Ecology: Moist, often sandy openings
Elevation: < 1000 m.
Bioregional distribution: Northwestern California, Central Western California, Southwestern California
Distribution outside California: to Texas, S.America
Synonyms: var. decumbens (C.B. Clarke) V.E. Grant
Reportedly intergrades with E. parishii
Horticultural information: IRR or WET: 4, 5, 6, 7, 8, 9, 10, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24; GRCVR; also STBL.
|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).|