|University of California, Berkeley|
|Directory News Site Map Home|
|Jepson eFlora: Taxon page
Key to families | Table of families and genera
Indexes to all accepted names and synonyms:
| A | B | C | D | E | F | G | H | I | J | K | L | M | N | O | P | Q | R | S | T | U | V | W | X | Y | Z |
Annual, perennial herb, often rhizomed or stoloned, often of wet open places; roots fibrous; generally bisexual.
Stem: generally 3-sided, generally solid.
Leaf: generally 3-ranked; base sheathing, sheath generally closed, ligule generally 0; blade (0 or) linear, parallel-veined.
Inflorescence: spikelets generally arranged in head-, spike-, raceme-, or panicle-like inflorescences; flower generally sessile in axil of flower bract, enclosed in a sac-like structure ( perigynium) or generally not.
Flower: small, generally wind-pollinated; perianth 0 or generally bristle like; stamens generally 3, anthers attached at base, 4 chambered; ovary superior, chamber 1, ovule 1, style 2–3-branched.
Fruit: achene, 2–3 sided.
± 100 genera, 5000 species: especially temperate. [Ball et al. 2002 FNANM 23:1–608] Difficult; taxa differ in technical characters of inflorescence, fruit. In Carex and Kobresia, what appear to be pistillate flowers in fact are highly reduced inflorescences (whether or not the same applies to staminate flowers is still under debate). In some other works (e.g., FNANM) these are called spikelets, and they are treated as being arranged in spikes. Here and in TJM (1993), what appear to be pistillate flowers are called pistillate flowers in Carex (and they are treated as being arranged in spikelets), but spikelets in Kobresia (and they are treated as being arranged into spikes). Though internally inconsistent, the approach here is consistent with traditional usage, and reflects a preference for character states that may be determined in the field. —Scientific Editors: S. Galen Smith, Thomas J. Rosatti, Bruce G. Baldwin.
Unabridged references: [Tucker 1987 J Arnold Arbor 68:361–445; Bruhl 1995 Australian Syst Bot 8:125–305]
Key to Cyperaceae
Perennial [ annual], cespitose.
Leaf: basal [and cauline]; ligule present .
Inflorescence: terminal, head-like [not]; inflorescence bract leaf-like; spikelets flat; flower bracts 2-ranked, proximal >=2 sterile.
Flower: bisexual or distal-most staminate; perianth bristles 3–6; style 3-branched.
Fruit: 3-sided; tubercle 0.
± 100 species: worldwide, especially Australia. (Greek: rush-like plant)
Plant 2–7 dm, erect, wiry, glabrous; rhizome caudex-like.
Stem: <= 1 mm diam, cylindric, stiff, center spongy with air cavities.
Leaf: > 1/2 stem; blade ± 1 mm wide, 3-angled, entire minute- serrate; sheath ± black, splitting adaxially; ligule ± 0.3 mm, dark brown.
Flower: perianth bristles generally < fruit, smooth or scabrous, deciduous.
Fruit: 1–1.5 mm, ovoid- ellipsoid, ± white.
2n=44,54. Marshes, swamps, springs, generally alkaline soils; < 1500 m. San Gabriel Mountains, San Bernardino Mountains, Mojave Desert;
Previous taxon: Schoenus
Next taxon: Scirpus
Citation for the whole project: Jepson Flora Project (eds.) [year] Jepson eFlora, http://ucjeps.berkeley.edu/IJM.html [accessed on month, day, year]
Citation for an individual treatment: [Author of taxon treatment] [year]. [Taxon name] in Jepson Flora Project (eds.) Jepson eFlora, [URL for treatment]. Accessed on [month, day, year].
Copyright © 2012 Regents of the University of California
We encourage links to these pages, but the content may not be downloaded for reposting, repackaging, redistributing, or sale in any form, without written permission from The Jepson Herbarium.
|Bioregions in which taxon occurs||Markers link to CCH specimen records. If the markers are obscured, reload the page [or change window size and reload]. Yellow markers indicate records that may provide evidence for eFlora range revision or may have georeferencing or identification issues.|
Chart based on elevation range in Manual and elevations and coordinates of CCH records.
Data provided by the participants of the Consortium of California Herbaria.
Note: About half of the CCH records include both elevation and coordinates.
| Data provided by the participants of the Consortium of California Herbaria.
View all CCH records
CCH collections by month