Date: July 21, 2010 Location: Williams Prairie (map)
| Classification Hierarchy | |
| Kingdom | Plantae |
| Subkingdom | Tracheophyta |
| Superdivision | Spermatophyta |
| Division | Magnoliophyta |
| Class | Magnoliopsida |
| Subclass | Rosidae |
| Order | Myrtales |
| Family | Onagraceae |
| Genus | Ludwigia |
| Species | Ludwigia alternifolia |
Date: July 21, 2010 Location: Williams Prairie (map)
USDA Plant Profile Flora of N. America
Scientific Name: Ludwigia alternifolia
Common Name: seedbox
Origin: Native
Notes: Four species of Ludwigia have been reported in Iowa: L. alternifolia, L. palustris, L. peploides, and L. polycarpa. All four are found in wet invironments (see reference 2 below).
Additional references: 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12.
Flowers: July; yellow; petiolate, petals and sepals 4, stamen 4, fruit; a many seeded capsule, 4 sided nearly cuboidal with a rounded base and a pore at the distal end.
Stems and Leaves: stems erect, branched; leaves alternate, petioled,lanceolate (pointed at both ends), margin entire.
Glossaries of botanical terms: 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12.
