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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 cyperoides Laharpe
Habit: Perennial herb 5--50 cm; rhizome long, +- erect, grading into stem. Stem: leafy; nodes conspicuous. Leaf: evenly spaced on stem, occasionally overlapping; 4--20 cm, 2--8.5 mm wide; sheath appendages 0; blade with flat side toward stem, crosswalls 0. Inflorescence: lowest bract < inflorescence, resembling cauline leaves; diffuse, branches many, spreading; clusters 10--70, 2--10-flowered; bracts membranous. Flower: perianth parts 2.2--3.9 mm, acuminate, green, sepals generally < petals; stamens 6, filaments >= anthers. Fruit: > perianth, gradually tapered to elongate beak 0.5--1 mm. Seed: 0.4--0.5 mm; rectangular-veined, appendages minute.
Ecology: Creekbanks, damp meadows, yellow-pine forest; Elevation: 600--1100 m. Bioregional Distribution: n SNH (Butte, Yuba cos.); Distribution Outside California: native to South America. Fruiting Time: Jul--Aug
Unabridged Note: Only North America sites, 5600 km from closest population in South America Andes.
eFlora Treatment Author: Peter F. Zika
Jepson Online Interchange
Previous taxon: Juncus covillei
Next taxon: Juncus dichotomus
Citation for this treatment: Peter F. Zika 2016. Juncus cyperoides, in Jepson Flora Project (eds.) Jepson eFlora, http://ucjeps.berkeley.edu/cgi-bin/get_IJM.pl?tid=29637, accessed on September 28, 2016.
Citation for the whole project: Jepson Flora Project (eds.) 2016. Jepson eFlora, http://ucjeps.berkeley.edu/IJM.html, accessed on September 28, 2016.