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|Jepson eFlora: Taxon page
Key to families | Table of families and genera
Index to accepted names and synonyms:
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|Family: Juncaceae||View Description||Dichotomous Key|
|Genus: Juncus||View Description||Dichotomous Key|
|Species:||View Description||Dichotomous Key|
Juncus oxymeris Engelm.
Habit: Perennial herb 30--150 cm; rhizome creeping. Leaf: bases overlapping; sheath appendages 0 or small; blade flat, edge toward stem, 3--7 mm wide, crosswalls generally incomplete. Inflorescence: 15--30 cm, open; lowest bract inconspicuous; branches ascending; clusters 10--70, few-flowered. Flower: perianth parts 2.5--4 mm, +- equal, sharp-pointed, green, light brown in age, tips red to purple, margins scarious; stamens 6, filaments << conspicuous anthers. Fruit: generally > perianth, 3-angled, gradually tapered to slender beak, brown. Seed: generally 0.5 mm; appendages small, blunt.
Ecology: Uncommon. Swales, montane meadows, damp, sunny ground; Elevation: < 2100 m. Bioregional Distribution: NCoRO, NCoRI, CaRF, SN, GV, TR, PR; Distribution Outside California: to southwestern British Columbia. Fruiting Time: Jul--Aug Note: Highly variable, possibly from hybridization with Juncus phaeocephalus.
eFlora Treatment Author: Peter F. Zika
Jepson Online Interchange
Previous taxon: Juncus orthophyllus
Next taxon: Juncus parryi
Citation for this treatment: Peter F. Zika 2016. Juncus oxymeris, in Jepson Flora Project (eds.) Jepson eFlora, http://ucjeps.berkeley.edu/cgi-bin/get_IJM.pl?tid=29699, accessed on May 02, 2016.
Citation for the whole project: Jepson Flora Project (eds.) 2016. Jepson eFlora, http://ucjeps.berkeley.edu/IJM.html, accessed on May 02, 2016.