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|Family: Juncaceae||View Description||Dichotomous Key|
|Genus: Juncus||View Description||Dichotomous Key|
|Species:||View Description||Dichotomous Key|
Juncus acuminatus Michx.
Habit: Perennial herb, cespitose, 20--80 cm; rhizome short. Leaf: generally basal; sheath appendages 1.5--5 mm, rounded; blade cylindric, crosswalls complete, obvious. Inflorescence: lowest bract < inflorescence; branches spreading; clusters generally 6--50, 5--20-flowered. Flower: perianth parts 2.5--3.5 mm, +- equal, narrowly acuminate, light brown to +- green; stamens generally 3, filaments +- > anthers. Fruit: generally <= perianth, light brown to red; chamber 1. Seed: 0.3--0.5 mm; appendages minute. Chromosomes: 2n=40.
Ecology: Shores, swales; Elevation: generally < 1300 m. Bioregional Distribution: NCo, KR, NCoRI, CaRF, n SN, GV, SnFrB; Distribution Outside California: to British Columbia, eastern North America, Mexico. Fruiting Time: Jul--Aug
eFlora Treatment Author: Peter F. Zika
Jepson Online Interchange
Previous taxon: Juncus
Next taxon: Juncus acutus subsp. leopoldii
Citation for this treatment: Peter F. Zika 2016. Juncus acuminatus, in Jepson Flora Project (eds.) Jepson eFlora, http://ucjeps.berkeley.edu/cgi-bin/get_IJM.pl?tid=29592, accessed on February 12, 2016.
Citation for the whole project: Jepson Flora Project (eds.) 2016. Jepson eFlora, http://ucjeps.berkeley.edu/IJM.html, accessed on February 12, 2016.