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

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



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.



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.


E. radicans (Poir.) Kunth

Perennial < 8 dm, often floating, rhizomed
Stem generally > 0.5 mm wide, spongy, often flattened in pressing
Leaves several, generally spaced, needle-like (1 sheathing, ± appressed, base greenish, tip not expanded, not scarious)
Inflorescence: spikelet 3–4 mm, wider than stem, linear to ovate, 4–12-flowered; flower bract greenish to straw-colored, tip ± obtuse
Flower: style 3-branched
Fruit: perianth bristles (0) generally > fruit; body 0.7–0.8 mm, elliptic to obovate, weakly 3-sided, several-ridged, crossbars 30–40 per row, dull yellow-white; tubercle conic, ± flat, base narrowed
Ecology: Marshes, lake edges
Elevation: < 1500 m.
Bioregional distribution: Northwestern California, San Joaquin Valley, Central Western California, Southwestern California
Distribution outside California: s US to S.America
Synonyms: E. acicularis var. r. (Poiret) Britton misapplied

previous taxon | next taxon
bioregional map for ELEOCHARIS%20radicans being generated

Retrieve Jepson Interchange Index to Plant Names entry for Eleocharis radicans
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

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