Flora of North America species comparison

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Ludwigia peploides subsp. peploides
Photo is of parent taxon

floating primrose-willow, floating water primrose, Matted water primrose
Stems

glabrous or sparsely villous.
Leaves

alternate or fascicled;

stipules symmetrical;

petioles of basal leaves 0.3–0.8 cm, those of distal leaves 0.2–2.5 cm;

blade 0.8–4(–8.5) cm, apex sometimes glandular-mucronate, surfaces shiny, glabrous, rarely ciliate or minutely pellucid-punctate.
Flowers

anthers on short filaments 0.5–1.1 mm, those on long filaments 0.8–1.2 mm;

ovary 6–14 mm, apex truncate, glabrous or with scattered hairs, stigma usually as long as anthers, rarely exserted beyond them.
Capsules

10–17(–25) × 2–3 mm, pedicel 10–35 mm.
Seeds

7–14 per locule.
2n

= 16.

Ludwigia peploides subsp. peploides
Phenology Flowering summer–early fall.
Habitat Wet places, along slow-moving rivers, streams, canals, ditches, often growing into main channels as aquatic weeds.
Elevation 0–900[–3000] m. (0–3000[–9800] ft.)
Distribution
from FNA
AZ; CA; NM; OR; TX; Mexico; Central America; South America; West Indies (Cuba); Pacific Islands (Galapagos Islands) [Introduced elsewhere in Pacific Islands (Society Islands), Australia]
[BONAP county map]
Source FNA vol. 10.
Parent taxa Onagraceae > subfam. Ludwigioideae > Ludwigia > sect. Jussiaea > Ludwigia peploides
Sibling taxa
L. peploides subsp. glabrescens, L. peploides subsp. montevidensis
Synonyms Jussiaea californica, J. diffusa var. californica, J. repens var. californica
Name authority unknown
Web links 
Unless otherwise noted, all data comes from the online version of the Flora of North America, who have made most of their content available via a Creative Commons license (CC BY 4.0).



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(If the plant you're looking for doesn't show up in the auto-complete list, that means it either isn't described in Flora of North America yet, or it's listed under a synonym. And please note that Flora of North America is still missing several plant families, including Apiaceae, Boraginaceae, and Polemoniaceae.)

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