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|Family: Juncaceae||View Description||Dichotomous Key|
|Genus: Juncus||View Description||Dichotomous Key|
|Species:||View Description||Dichotomous Key|
Juncus macrophyllus Coville
Habit: Perennial herb, loosely cespitose, 20--100 cm; rhizome short. Leaf: generally basal; sheath appendages (0.7)1.5--3.4 mm, membranous; blade with flat side toward stem, generally = stem, 1.5--3 mm wide, +- channeled, midrib prominent; cauline leaves 1--2, thick. Inflorescence: lowest bract leaf-like, < inflorescence; branches ascending; clusters 8--30, 3--5-flowered. Flower: perianth parts 4--6 mm, sepals < petals, margins membranous, midveins generally red-streaked, not papillate; stamens 6, filaments << anthers. Fruit: generally <= perianth, obovoid, +- abruptly beaked, shiny brown. Seed: narrowly elliptic; appendages short.
Ecology: Uncommon. Wet slopes, creekbanks; Elevation: 700--2600 m. Bioregional Distribution: s SN, SCoRO, SCo, TR, PR (exc SnJt), DMtns; Distribution Outside California: to southwestern Utah, Arizona, Baja California. Fruiting Time: Jul--Oct
eFlora Treatment Author: Peter F. Zika
Jepson Online Interchange
Previous taxon: Juncus macrandrus
Next taxon: Juncus marginatus
Citation for this treatment: Peter F. Zika 2017. Juncus macrophyllus, in Jepson Flora Project (eds.) Jepson eFlora, http://ucjeps.berkeley.edu/cgi-bin/get_IJM.pl?tid=29680, accessed on February 19, 2017.
Citation for the whole project: Jepson Flora Project (eds.) 2017. Jepson eFlora, http://ucjeps.berkeley.edu/IJM.html, accessed on February 19, 2017.