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|Jepson eFlora: Taxon page
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|Family: Menyanthaceae||View Description||Dichotomous Key|
|Genus: Menyanthes||View Description||Dichotomous Key|
|Species:||View Description||Dichotomous Key|
Menyanthes trifoliata L.
Habit: Rhizome covered with old leaf bases. Stem: prostrate or flower branches ascending. Leaf: basal, alternate, emergent; leaflets 3, 2--12 cm, 1--5 cm wide, oblong-obovate, +- entire; petioles 5--30 cm; stipules as wing-margins of petiole. Inflorescence: raceme; peduncle 20--40 dm; pedicel 5--25 mm. Flower: calyx persistent, tube short-conic, lobes 5, 2--5 mm, oblong; corolla funnel-shaped, white to pink, tube 5--8 mm, lobes 5--8 mm, spreading, generally +- pink at tip, coarse-hairy adaxially; filaments thread-like, anthers sagittate; style persistent. Fruit: 2-valved, +- ellipsoid. Seed: +- elliptic, +- compressed. Chromosomes: 2n=54,108.
Ecology: Ponds, bogs, swamps, wet meadows, seeps, margins of shallow lakes; Elevation: 900--3200 m. Bioregional Distribution: c NCo, KR, CaR, SN (exc Teh), n CCo; Distribution Outside California: to Alaska, Colorado, Michigan, Maine, circumboreal. Flowering Time: May--Aug Note: Leaves sometimes used in beer-making as hops substitute.
eFlora Treatment Author: Robert F. Thorne, C. Barre Hellquist & William J. Stone
Jepson Online Interchange
Previous taxon: Menyanthes
Next taxon: Nymphoides
Citation for this treatment: Robert F. Thorne, C. Barre Hellquist & William J. Stone 2017. Menyanthes trifoliata, in Jepson Flora Project (eds.) Jepson eFlora, http://ucjeps.berkeley.edu/cgi-bin/get_IJM.pl?tid=33295, accessed on January 21, 2017.
Citation for the whole project: Jepson Flora Project (eds.) 2017. Jepson eFlora, http://ucjeps.berkeley.edu/IJM.html, accessed on January 21, 2017.