Jepson Flora Project: Jepson Interchange    

 
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Jepson Interchange (more information)
©Copyright 1993 by the Regents of the University of California

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  • Up-to-date information about California vascular plants is available from the Jepson eFlora.

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.

KOBRESIA

Perennial
Leaves basal, sheathing
Inflorescence: spikelets in terminal clusters, spiraled, subtended by spikelet bract, generally 1–2-flowered, lower flowers pistillate, upper staminate
Flower: perianth bristles 0
Pistillate flower: perigynium open along 1 side, fused at base or not at all; style 3-branched
Fruit 3-sided; tubercles 0
Species in genus: ± 35 species: n temp
Etymology: (J.P. von Kobres, Austrian botanist, 1747–1823)

Native

K. bellardii (All.) K. Koch

Plant 1–5 dm, cespitose, slender, wiry
Leaf < stem, thread-like
Inflorescence: spikelet clusters 15–25 mm, generally dense
Fruit ± 2 mm, 1 mm wide
Chromosomes: 2n=52
Ecology: Rocky seeps
Elevation: > 3000 m.
Bioregional distribution: c High Sierra Nevada (Convict & Virginia Creek Basins, Mono Co.)
Distribution outside California: circumboreal
Synonyms: K. myosuroides (Villars) Fiori & Paol
See the CNPS Inventory for information about endangerment and rarity.
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