|University of California, Berkeley|
|Jepson eFlora: Taxon page
Key to families | Table of families and genera
Index to accepted names and synonyms:
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|Family: Cyperaceae||View Description||Dichotomous Key|
|Genus: Eleocharis||View Description||Dichotomous Key|
|Species:||View Description||Dichotomous Key|
Eleocharis atropurpurea (Retz.) J. Presl & C. Presl
Habit: Annual 2--12(19) cm, tufted; rhizome 0. Stem: to 0.3 mm diam, subcylindric. Leaf: distal sheath firm, persistent, tip acute. Inflorescence: spikelet 2--6 mm, 1--2.5 mm wide; flower bracts to 100, 0.6--1.3 mm, basal with flower or not. Flower: anthers to 0.5 mm; stigmas 2. Fruit: 0.3--0.5 mm, 0.3--0.4 mm wide, 2-sided, smooth, black (brown when immature); perianth bristles (0)4(6), vestigial or <= 1/2 fruit, generally +- white. Chromosomes: 2n=20.
Ecology: Very local. Fresh wet bare soil; Elevation: < 800 m. Bioregional Distribution: GV, SCo, SnBr; Distribution Outside California: to British Columbia; also New Mexico to Michigan, Florida. Flowering Time: Summer--fall Note: Possibly introduced from eastern North America; several California collections are weeds in rice fields; earliest California collection in 1932.
Synonyms: Scirpus atropurpureus Retz.
eFlora Treatment Author: S. Galen Smith
Jepson Online Interchange
Previous taxon: Eleocharis acicularis var. occidentalis
Next taxon: Eleocharis bella
Citation for this treatment: S. Galen Smith 2017. Eleocharis atropurpurea, in Jepson Flora Project (eds.) Jepson eFlora, http://ucjeps.berkeley.edu/cgi-bin/get_IJM.pl?tid=23932, accessed on February 24, 2017.
Citation for the whole project: Jepson Flora Project (eds.) 2017. Jepson eFlora, http://ucjeps.berkeley.edu/IJM.html, accessed on February 24, 2017.