Jepson Flora Project: Jepson Interchange    

 
link to manual TREATMENT FROM THE JEPSON MANUAL (1993) previous taxon | next taxon
Jepson Interchange (more information)
©Copyright 1993 by the Regents of the University of California

    THIS PAGE IS NO LONGER UPDATED
    AND IS MAINTAINED FOR ARCHIVAL PURPOSES ONLY
  • 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.

ELEOCHARIS

SPIKERUSH

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 0–6, persistent, barbs generally recurved; stamens (1–)3; style 2–3-branched, base bulb-like, persistent
Fruit 2–3-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.

Native

E. quinqueflora (Hartmann) O. Schwarz

Perennial 1–4 dm, rhizomed
Leaf straw-colored to brownish; tip truncate
Inflorescence: spikelet 4–7 mm, generally wider than stem, ovate, 2–7-flowered; flower bract ovate, dark brown to blackish, margin scarious, tip obtuse to acute
Flower: style 3-branched
Fruit: perianth bristles generally > fruit, barbs irregular; body 2–3 mm, obovate to fusiform, weakly 2–3-sided, yellow-brown, weakly netted; tubercle base not narrowed, tip dark
Ecology: Uncommon. Meadows
Elevation: 1500–3700 m.
Bioregional distribution: Northwestern California, Cascade Range, Sierra Nevada, San Bernardino Mountains, San Jacinto Mountains, Great Basin Floristic Province
Distribution outside California: circumboreal; also s Chile
Synonyms: E. pauciflora (Lightf.) Link

previous taxon | next taxon
bioregional map for ELEOCHARIS%20quinqueflora being generated
 
N.B. The distribution depicted here differs from that given in The Jepson Manual (1993)

Retrieve Jepson Interchange Index to Plant Names entry for Eleocharis quinqueflora
Retrieve dichotomous key for Eleocharis
Overlay Consortium of California Herbaria specimen data by county on this map
Show other taxa with the same California distribution | Read about bioregions | Get lists of plants in a bioregion
Return to the Jepson Interchange main page
Return to treatment index page
Glossary


University & Jepson Herbaria Home Page |
General Information | University Herbarium | Jepson Herbarium |
Visiting the Herbaria | On-line Resources | Research |
Education | Related Sites
Copyright © by the Regents of the University of California