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Key to families | Table of families and genera
Indexes to all accepted names and synonyms:
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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
Leaf: simple, submersed or floating, deeply cordate, generally alternate, those on flowering stems generally opposite; petioles > blades. Inflorescence: ± umbel, in axils of petioles near top of long, petiole-like flower stem, often with clusters of tuberous roots. Flower: corolla rotate, white or yellow, lobes with a glandular appendage near base; filaments < to > style; stigma persistent, 2-lobed. Fruit: irregularly dehiscent.
± 50 species: North America, South America, Eurasia, Africa, Australia. (Greek: Nymphaea-like, from resemblance of leaves to those of water lily) Sometimes in Gentianaceae, but plants differ in their ± aquatic habitats, generally alternate, petioled leaves, and several other ways.
Previous taxon: Menyanthes trifoliata
Next taxon: Nymphoides peltata
Citation for the whole project: Jepson Flora Project (eds.) 2013. Jepson eFlora, http://ucjeps.berkeley.edu/IJM.html, accessed on Dec 22 2014
Citation for this treatment: [Author of taxon treatment] 2013. Nymphoides, in Jepson Flora Project (eds.) Jepson eFlora, http://ucjeps.berkeley.edu/cgi-bin/get_IJM.pl?tid=8829, accessed on Dec 22 2014
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