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| Jepson eFlora: Taxon page
Key to families | Table of families and genera |
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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 | |
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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]
Annual [per], 2–30[50] cm, rhizomes 0.
Stem: < 0.5[1] mm wide, ± 5-angled, glabrous or scabrous, solid.
Leaf: several, basal, spiraled, flower stem with 1+ cauline; sheath margin distally ciliate, with hairs ± 1 mm, soft; ligule 0; blade well developed, < 0.5[1] mm wide, C-shaped in ×-section proximally.
Inflorescence: 1, terminal [(> 1, some in leaf axils)], branched, umbel-like [ head-like or of 1 spikelet]; inflorescence bracts (1)several, longest < to > inflorescence, leaf-like; spikelets 1–5 [> 5], 2–5 mm, 1–1.5 mm wide, cylindric; flower bracts 6–30[50], 1.5–2 mm, spiraled, each with 1 flower in axil, puberulent, midrib keeled, tip shallow-notched or not, mucronate or not.
Flower: bisexual; perianth 0; style [2]3-branched, base enlarged, persistent.
Fruit: > 1 mm, wide-obovate, thick-(2)3-sided, wavy-ridged or papillate.
± 100 species: worldwide. (Latin: bulb-like style) [Kral 2002 FNANM 23:131–136]
Unabridged references: [Kral 1971 Sida 4:57–227]
Stem: generally > leaves.
Leaf: blade < 0.5 mm wide.
Inflorescence: spikelets 1–7, 2–5 mm, 1–1.5 mm wide; flower bracts ovate.
Fruit: 0.5–0.7 mm, pale brown, transverse-wavy-ridged, angles sharp, tubercle ± round.
2n=84. Open damp/dry sandy-gravelly soil; 300–2200 m. High Cascade Range, n Sierra Nevada Foothills, High Sierra Nevada;
Previous taxon: Bulbostylis
Next taxon: Carex
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
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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.
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