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|Jepson eFlora: Taxon page
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|Family: Juncaceae||View Description||Dichotomous Key|
|Genus: Juncus||View Description||Dichotomous Key|
|Species:||View Description||Dichotomous Key|
Juncus ensifolius Wikstr.
Habit: Perennial herb 20--60 cm; rhizome slender, creeping. Leaf: generally basal; bases overlapping; sheath appendages 0 or obscure; blade flat, with edge toward stem, 2--5 mm wide, generally curved, crosswalls incomplete, tip long. Inflorescence: variable; lowest bract <= 1/2 inflorescence; clusters generally 2--10, generally many-flowered, generally hemispheric. Flower: variable; perianth parts 2.2--3.3 mm, +- equal, generally dark brown to black; stamens generally 3, filaments > anthers; style 0.1--0.6 mm. Fruit: generally >= perianth, oblong, abruptly short-beaked. Seed: +- 0.5 mm, widely fusiform; appendages 0 or short. Chromosomes: 2n=40.
Ecology: Common. Wet places; Elevation: < 2800 m. Bioregional Distribution: NW, CaR, SN, CCo, TR, GB; Distribution Outside California: to Alaska, western Canada, Utah, northeastern Asia, Mexico. Fruiting Time: Jul--Sep Note: Relationship to Juncus saximontanus needs study; introduced in eastern North America, Europe, Hawaii, New Zealand.
eFlora Treatment Author: Peter F. Zika
Jepson Online Interchange
Previous taxon: Juncus elliottii
Next taxon: Juncus exiguus
Citation for this treatment: Peter F. Zika 2016. Juncus ensifolius, in Jepson Flora Project (eds.) Jepson eFlora, http://ucjeps.berkeley.edu/cgi-bin/get_IJM.pl?tid=29651, accessed on February 07, 2016.
Citation for the whole project: Jepson Flora Project (eds.) 2016. Jepson eFlora, http://ucjeps.berkeley.edu/IJM.html, accessed on February 07, 2016.