The Collaborative International Dictionary
Ludwigia alternifolia
Seedbox \Seed"box`\, n. (Bot.)
A capsule.
A plant ( Ludwigia alternifolia) which has somewhat cubical or box-shaped capsules.
Wikipedia
Ludwigia alternifolia
Ludwigia alternifolia, commonly known as bushy seedbox and rattlebox, is a herbaceous perennial plant of the family Onagraceae.
Its habitat includes wet, swampy localities.