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large-flower primrose-willow

Ludwigia grandiflora

Photo by BareFeat
Published on Project Noah
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39.1643, -122.047

Field Notes

Description:

2'-3' reed like, present at watersides and wet areas. Leaves 3" oblong, flowers bright yellow 5 pedaled

Habitat:

invasive; watersides and wetlands

Notes:

Thanks To ScottRasmussen for the help on this one! I posted an additional picture of this plant practically choking off the creek that flows through this sanctuary. At first I thought i had photographed two separate species as one seemed low-lying and the other was rather tall at 3' as we walked on a board walk lookout point. I see now after comparing the leaves and the info you provided they are one in the same. This species seems a little different then the link provided but for sure is just a varied sub-species if at all. As with most weeds I find, these flowers were enchanting and quite beautiful.

Reference Links:

PLANTS Profile for Ludwigia grandiflora ssp. grandiflora (large-flower primrose…

Species ID Suggestions

Water Primrose

Ludwigia grandiflora (uruguayensis)

Reference Link
ScottRasmussen
1

Comments (4)
ScottRasmussen
Every photo of this species of Ludwigia seems to look different from any other photo of it. To complicate things, other common species of Ludwigia have four petals, this one commonly has five petals, and one subspecies, ssp. hexapetala, has six petals! And to complicate matters further, there seems to be some disagreement whether this particular species in the U.S. should be classified as L. grandiflora or L. uruguayensis. The only thing agreed upon is that it's becoming a pest in CA and FL.
BareFeat
Thanks Scott! I notice if you have geotagged your photos it seems to override anything you put in. Perhaps we need a check box to use geotagging or provided location.
ScottRasmussen
This is an introduced species of Ludwigia which unfortunately is becoming a major pest in many parts of the world.

Spotted for Missions

Mission
Flowers of North America

Tags

Photographed
PublishedJuly 24, 2011

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