Grey Nickernut
Guilandina bonduc
Also known as Caesalpinia bonduc
Markings and exact colorations may vary.
Photo: Claire Herzog via iNaturalist · CC BY 4.0 · cropped & resized · source
A hard, marble-round grey seed with a glassy shine, drifted from tropical shorelines.
- Typical size
- 0.5–1 in
- How often it turns up
- Fairly common
- Collecting
- Usually legal to collect
- Handling
- Safe to handle
Drift seeds are free to collect.
How to tell it apart
- Perfectly round to slightly oval
- Grey with fine surface cracks, very glossy
- Extremely hard shell
Found one?
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Commonly confused with
Hamburger BeanMucuna species
Mature nickernuts turn gray. On a hamburger bean, the dark hilum band running around most of the edge is a better clue than a round shape alone.
More sea beans in the field guide
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