|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
AND IS MAINTAINED FOR ARCHIVAL PURPOSES ONLY
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.
Leaves basal, erect, stiff, sheathing
Inflorescence subtended by 2 unequal, leaf-like bracts; spikelet bracts 12, sheathing; spikelets in terminal head-like clusters, flat; flower bracts 2-ranked, only uppermost fruiting
Flowers bisexual and staminate; perianth bristles 36, generally < 1 mm, deciduous; stamens 3; style 3-branched
Fruit obovoid; tubercle generally 0
Species in genus: ± 80 species: worldwide, especially Australia
Etymology: (Greek: a rush)
Plant 27 dm, densely cespitose; rhizomes 0See the CNPS Inventory for information about endangerment and rarity.
Leaf > 1/2 stem, ± 1 mm wide, entire to minutely serrate, uprolled; ligule wide, very dark brown
Fruit 3-sided, with a ± white, bony covering
Ecology: Uncommon. Marshes, swamps, springs, generally alkaline soils
Elevation: < 2000 m.
Bioregional distribution: San Bernardino Mountains, Mojave Desert
Distribution outside California: to Caribbean, Eurasia, n Africa
Flowering time: AugSep
Used as roof thatch in Ireland
Horticultural information: TRY.