Common Name: SEDGE FAMILY Habit: Annual, perennial herb, often rhizomed or stoloned, often of wet open places; roots fibrous; monoecious, dioecious, or flowers 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: unisexual or bisexual, 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(4)-branched. Fruit: achene, 2--3 sided. Genera In Family: +- 100 genera, 5000 species: especially temperate. Note: Difficult; taxa differ in technical characters of inflorescence, fruit. In Carex and Kobresia, what appear to be individual 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 individual 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. Molecular, morphological, and embryological evidence indicates that Eriophorum crinigerum is to be segregated to a new genus, as Calliscirpus criniger (A. Gray) C.N. Gilmour et al., along with a second, newly described species, Calliscirpus brachythrix C.N. Gilmour et al. (Gilmour et al. 2013); key to genera modified by Peter W. Ball to include Calliscirpus. eFlora Treatment Author: S. Galen Smith, except as noted Scientific Editor: S. Galen Smith, Thomas J. Rosatti, Bruce G. Baldwin.
Habit: Perennial herb, cespitose, short-rhizomed. Leaf: basal, sheathing. Inflorescence: spikelets in 1 [or more] terminal spikes [or panicles], spiraled, subtended by scale-like bract. Flower: unisexual, perianth 0. Pistillate Flower: enclosed by sac-like structure (perigynium) open on 1 side; style generally 3-branched, base persistent. Fruit: 3-sided; tubercles 0. Etymology: (J.P. von Kobres, Austrian botanist, 1747--1823) eFlora Treatment Author: Peter W. Ball
Kobresia myosuroides (Vill.) Fiori & Paol.
NATIVE Habit: Plant 1--3.5 dm, slender, wiry. Leaf: <= stem, thread-like, 0.2--0.5 mm wide, base persistent, brown, +- glossy. Inflorescence: spike 1, 10--30 mm, generally dense; spikelets 2--3.5 mm, +- 1 mm wide, proximal spikelets 2-flowered, bisexual (1-flowered, pistillate), distal spikelets 1-flowered, staminate; flower bract 2--3.5 mm, ovate, membranous. Fruit: 2--2.7 mm, +- 1 mm wide, short-beaked. Chromosomes: 2n=52,56--58. Ecology: Rocky seeps; Elevation: > 2700 m. Bioregional Distribution: c SNH; Distribution Outside California: circumboreal. Flowering Time: Aug Synonyms: Kobresia bellardii (All.) Loisel. (K. Koch may be correct instead of Loisel.) Jepson eFlora Author: Peter W. Ball Index of California Plant Names (ICPN; linked via the Jepson Online Interchange) Listed on CNPS Rare Plant Inventory Previous taxon: Kobresia Next taxon: Kyllinga
Botanical illustration including Kobresia myosuroides
Citation for this treatment: Peter W. Ball 2012, Kobresia myosuroides, in Jepson Flora Project (eds.) Jepson eFlora, https://ucjeps.berkeley.edu/eflora/eflora_display.php?tid=29928, accessed on April 23, 2024.
Citation for the whole project: Jepson Flora Project (eds.) 2024, Jepson eFlora, https://ucjeps.berkeley.edu/eflora/, accessed on April 23, 2024.
No expert verified images found for Kobresia myosuroides.
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