The cover may be legumes (pueraria, centrosema, crotalaria, mucuna) or grasses.    From Wordnik.com.  [1.1. Forests] Reference

They are in all manner of shapes, strings of mucuna and poison-beans; carved images stuck over with feathers and tassels; padlocks with a cowrie or a mirror set in them; horns full of mysterious.    From Wordnik.com.  [Two Trips to Gorilla Land and the Cataracts of the Congo] Reference

I have little doubt with respect to their acting in a similar way with mucuna.    From Wordnik.com.  [Resources of the Southern Fields and Forests, Medical, Economical, and Agricultural. Being also a Medical Botany of the Confederate States; with Practical Information on the Useful Properties of the Trees, Plants, and Shrubs] Reference

Dr. Heubener, of Bethlehem, has employed the short, rigid hairs of the involucre as a substitute for those of mucuna, and has found them equally anthelmintic.    From Wordnik.com.  [Resources of the Southern Fields and Forests, Medical, Economical, and Agricultural. Being also a Medical Botany of the Confederate States; with Practical Information on the Useful Properties of the Trees, Plants, and Shrubs] Reference

They are in all manner of shapes, strings of mucuna and poison-beans; carved images stuck over with feathers and tassels; padlocks with a cowrie or a mirror set in them; horns full of mysterious "medicine;" iron - tipped poles; bones; birds 'beaks and talons; skins of snakes and leopards, and so forth.    From Wordnik.com.  [Two Trips to Gorilla Land and the Cataracts of the Congo Volume 2] Reference

A milpa is a field, usually but not always recently cleared, in which farmers plant a dozen crops at once, including maize, avocados, multiple varieties of squash and bean, melon, tomatoes, chilis, sweet potato, jicama (a tuber), amaranth (a grain-like plant), and mucuna (a tropical legume).    From Wordnik.com.  [1491: excerpts part 2] Reference