Red Hamburger Bean
Mucuna urens
Markings and exact colorations may vary.
A round sea bean with a reddish, speckled face and a thick black band around the edge.
- Typical size
- 0.8–1.1 in
- How often it turns up
- Rare
- Collecting
- Usually legal to collect
- Handling
- Safe to handle
Drift seeds are generally fine to pick up on public beaches. Don't remove plants or seeds from parks, preserves or dunes.
How to tell it apart
- Round, slightly flattened seed
- Reddish-brown to maroon surface, often flecked or mottled darker
- Thick black hilum band around most of the edge
Found one?
Photograph it and BeachNut ranks the likely matches with a confidence read, then logs it to your collection with the beach and date.
Browsing beaches and the full field guide is free. A free account logs unlimited finds and gives you three photo identifications a day.
Commonly confused with
Hamburger BeanMucuna species
Pick Red when the face is maroon and speckled; use the general entry if unsure.
Brown Hamburger BeanMucuna sloanei
Brown is smooth chestnut to dark brown; red is maroon and usually speckled.
More sea beans in the field guide
Get Florida beachcombing tips
Occasional emails: what's washing up, shelling tips and new BeachNut features. No spam, unsubscribe any time.