VELVET BEANS/10 seeds per pack
The Magic Velvet Bean of Mucuna pruriens
THE ONLY NATURAL SOURCE OF L-DOPA ALSO KNOWN AS DOPAMINE.
Is it ornamental? 
There are two varieties available in velvet beans. Black seeds give purple blooms and the white blooms from white seeds. A beautiful orchid like blooms on the vigorous climbing vine is apt for your arch in your lawn/porch  
Is the bean edible? 
Please open the link to read further 
https://www.healthifyme.com/blog/velvet-bean-the-exotic-legume-of-mucuna-pruriens/