|University of California, Berkeley|
|Directory News Site Map Home|
|Jepson eFlora: Taxon page
Key to families | Table of families and genera
Indexes to all 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 |
Perennial herb [annual], ± aquatic, herbage glabrous; rhizomes thick. Leaf: simple or of 3 leaflets, generally alternate; stipules generally 0; petiole bases sheathing. Inflorescence: various. Flower: bisexual [unisexual], radial; sepals 5, united or not; corolla rotate to funnel-shaped, lobes 5, fringed or coarse-hairy marginally or adaxially or not; stamens 5, epipetalous, alternate corolla lobes, anthers sagittate; nectaries generally 5, at ovary base; pistil 1, ovary generally ± superior, chamber 1, stigma 2-lobed. Fruit: capsule [± fleshy], valves 2–4. Seed: few to many, smooth, shiny.
5 genera, ± 70 species: worldwide. —Scientific Editor: Thomas J. Rosatti.
Unabridged references: [Kadereit, J. W. 2006 . Asterales: Introduction and Conspectus. Pp. 1–6, in Kadereit, J. W. & Jeffrey, C. (eds.), The Families and Genera of Vascular Plants. Volume VIII. Flowering Plants. Eudicots. Asterales. Springer, Berlin; Tippery, N. P. [et al. 2006], Les, D. H., Padgett, D., & Surrey, J. 2006. Clades and grades: An evaluation of generic circumscriptions in Menyanthaceae Dumort. (Asterales). Pp. 262–263, in Botany 2006 - Looking to the Future - Conserving the Past. (Abstracts: Botanical Society of America, etc.)]
Key to Menyanthaceae
1 sp. (Greek: disclosing, flower, from flowers opening in succession in inflorescence)
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.
2n=54,108. Ponds, bogs, swamps, wet meadows, seeps, margins of shallow lakes; 900–3200 m. c North Coast, Klamath Ranges, Cascade Range, Sierra Nevada (except Tehachapi Mountain Area), n Central Coast; to Alaska, Colorado, Michigan, Maine, circumboreal. Leaves sometimes used in beer-making as hops substitute. May–Aug [Online Interchange]
Previous taxon: Menyanthes
Next taxon: Nymphoides
Citation for the whole project: Jepson Flora Project (eds.) 2013. Jepson eFlora, http://ucjeps.berkeley.edu/IJM.html, accessed on Apr 20 2014
Citation for this treatment: [Author of taxon treatment] 2012. Menyanthes, in Jepson Flora Project (eds.) Jepson eFlora, http://ucjeps.berkeley.edu/cgi-bin/get_IJM.pl?tid=33295, accessed on Apr 20 2014
Copyright © 2013 Regents of the University of California
We encourage links to these pages, but the content may not be downloaded for reposting, repackaging, redistributing, or sale in any form, without written permission from The Jepson Herbarium.
|Bioregions in which Menyanthes trifoliata occurs|| Markers link to CCH specimen records. If the markers are obscured, reload the page [or change window size and reload]. Yellow markers indicate records that may provide evidence for eFlora range revision or may have georeferencing or identification issues.
READ ABOUT YELLOW FLAGS
|View elevation by latitude chart|| Data provided by the participants of the Consortium of California Herbaria.
View all CCH records
CCH collections by month