|University of California, Berkeley|
|Jepson eFlora: Taxon page
Key to families | Table of families and genera
Index to accepted names and synonyms:
| A | B | C | D | E | F | G | H | I | J | K | L | M | N | O | P | Q | R | S | T | U | V | W | X | Y | Z |
|Family: Juncaceae||View Description||Dichotomous Key|
|Genus: Juncus||View Description||Dichotomous Key|
|Species:||View Description||Dichotomous Key|
Juncus mertensianus Bong.
Habit: Perennial herb 15--45 cm; rhizome vertical, stout. Stem: flat. Leaf: cauline leaves 2--3; sheath appendages prominent, rounded to acute, opaque; blade cylindric, crosswalls complete. Inflorescence: lowest bract short-sheathing, wide, narrow tip > inflorescence; cluster generally 1, generally > 12-flowered; bractlets short-awned, dark brown, opaque. Flower: perianth parts 3--4 mm, not stiff, shiny +- brown-black, sepals narrowly acuminate, petals acute; stamens 6, filaments < to > anthers. Fruit: = or generally < perianth, oblong; tip notched or truncate. Seed: +- 0.5 mm, lance-ovate; appendages minute. Chromosomes: 2n=40.
Ecology: Common. Alpine, subalpine meadows, streambanks, lake margins; Elevation: 1200--3500 m. Bioregional Distribution: KR, NCoRH, CaRH, SNH, Wrn, SNE; Distribution Outside California: to Alaska, Saskatchewan, New Mexico. Fruiting Time: Jul--Oct Note: Important forage for sheep.
eFlora Treatment Author: Peter F. Zika
Jepson Online Interchange
Previous taxon: Juncus marginatus
Next taxon: Juncus mexicanus
Citation for this treatment: Peter F. Zika 2017. Juncus mertensianus, in Jepson Flora Project (eds.) Jepson eFlora, http://ucjeps.berkeley.edu/cgi-bin/get_IJM.pl?tid=29685, accessed on February 22, 2017.
Citation for the whole project: Jepson Flora Project (eds.) 2017. Jepson eFlora, http://ucjeps.berkeley.edu/IJM.html, accessed on February 22, 2017.