I have “bean” finding these seabeans along the Galveston Coast for a few years. I studied them for a project so I know all of their names and origins. The Cathie’s bean is the rarest and the sea heart is the most common.
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Mucuna sloanei leaves
I found these over a course of two days on the Seawall in Galveston.
Greenbean 
interesting….would any of these sprout under the right conditions??
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Yes they would, but I’m not sure what conditions they would be. I heard that somebody grew one before.
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