Sp. Pl. 1: 288. 1753.


Gen. Pl. ed. 5, 140. 1754.

Common names: Pickerel-weed
Etymology: for Giulio Pontedera, 1688–1757, Italian botanist
Synonyms: Narukila Adanson Umsema Rafinesque Unisema Rafinesque
Treatment appears in FNA Volume 26. Treatment on page 45. Mentioned on page 37, 41.
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Herbs, annual or perennial, rooted in mud. Vegetative stems submersed and growing to surface, or rhizomatous. Flowering stems submersed and growing to surface, or emersed and slightly constricted just below first node. Sessile leaves forming basal rosette, blade thin. Petiolate leaves floating or emersed; blade cordate to reniform, apex obtuse to acuminate. Inflorescences spicate, commonly 50 or more-flowered, elongating over many days; spathes folded, apex acute to acuminate; peduncle glandular-pubescent or pilose. Flowers open 1 day only; perianth mauve, blue, or white, funnelform, limb lobes oblong to oblanceolate, glandular-pubescent or pilose, apex obtuse to acuminate; stamens 6, distal 3 shorter than proximal 3; filaments purple, glandular-pubescent; anthers yellow, ovoid to oblong; ovary 3-locular, only 1 developing to maturity; ovule 1; style 1 or more. Fruits utriculate, ovoid, with spinulose, dentate or smooth longitudinal ridges. Seed 1, ovoid, smooth.


Western Hemisphere.


Species 6 (1 in the flora).

Lower Taxa

... more about "Pontederia"
Charles N. Horn +
Linnaeus +
Pickerel-weed +
Western Hemisphere. +
for Giulio Pontedera, 1688–1757, Italian botanist +
Sp. Pl. +  and Gen. Pl. ed. +
1753 +  and 1754 +
fernald1925a +, horn1987a +, lowden1973a +  and whigham1982a +
Narukila +, Umsema +  and Unisema +
Pontederia +
Pontederiaceae +