Pontederia

Linnaeus

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.
 TaxonIllustrator 
FNA26 Plate 002.jpegPontederia cordata
Lachnanthes caroliniana
Lophiola aurea
John Myers
John Myers
John Myers

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.

Distribution

Western Hemisphere

Discussion

Species 6 (1 in the flora).

Selected References

None.

Lower Taxa

"thin" is not a number."elongating" is not a number.

... more about "Pontederia"
ovoid;oblong +
obtuse +  and acuminate +
Charles N. Horn +
Linnaeus +
cordate;reniform +
Pickerel-weed +
Western Hemisphere +
for Giulio Pontedera, 1688–1757, Italian botanist +
acute;caudate +
glandular-pubescent +
3-merous +  and sessile +
emersed +  and submersed +
ovoid +  and utriculate +
more-flowered +  and spicate +
petiolate +  and sessile +
emersed +  and floating +
Single (?) +  and Many (?) +
pilose +  and glandular-pubescent +
6-lobed +
pilose +  and glandular-pubescent +
white +, blue +  and mauve +
3 +  and 1 +
Sp. Pl. +  and Gen. Pl. ed. +
1753 +  and 1754 +
dentate +  and spinulose +
clasping +  and folded +
bractlike +
rhizomatous +
indeterminate +
submersed +
elongate +
Narukila +, Umsema +  and Unisema +
Pontederia +
Pontederiaceae +
funnel +  and tubular +
perennial +  and annual +