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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 supiniformis Engelm.
Habit: Perennial herb, matted if submerged when young, cespitose, 8--40 cm; rhizome slender, spreading. Stem: nodes generally rooting, forming new plantlets; erect flower-stems appear as water recedes. Leaf: early submerged leaves < 30 cm, hair-like; sheath appendages 1--2 mm, membranous; cauline blades exceeding stem, cylindric, crosswalls complete. Inflorescence: lowest bract > inflorescence; clusters generally 5--9, 3--9-flowered. Flower: perianth parts 3.4--5.4 mm, sepals <= petals, narrowly lanceolate, 3--4-veined; stamens generally 3(6), filaments > anthers. Fruit: > perianth, oblong, tip acute to acuminate. Seed: 0.6--0.7 mm, obovoid, ends pointed; appendages minute.
Ecology: Marshes, ponds; Elevation: generally < 100 m. Bioregional Distribution: NCo (Mendocino Co.); Distribution Outside California: to Alaska. Fruiting Time: Jun--Aug
Synonyms: Juncus oreganus S. Watson
eFlora Treatment Author: Peter F. Zika
Jepson Online Interchange
Listed on CNPS Rare Plant Inventory
Previous taxon: Juncus saximontanus
Next taxon: Juncus tenuis
Citation for this treatment: Peter F. Zika 2017. Juncus supiniformis, in Jepson Flora Project (eds.) Jepson eFlora, Revision 3, http://ucjeps.berkeley.edu/eflora/eflora_display.php?tid=29723, accessed on March 30, 2017.
Citation for the whole project: Jepson Flora Project (eds.) 2017. Jepson eFlora, http://ucjeps.berkeley.edu/eflora/, accessed on March 30, 2017.