Aaron's-beard

Aaron's-beard, name sometimes applied to several plants usually characterized by some beardlike aspect, as the St.-John's-wort because of its many stamens and the Kenilworth ivy because of its threadlike runners. Aaron's-beard cactus is Opuntia leucotricha, a true cactus.
Found on http://www.infoplease.com/ce6/sci/A0802020.html
No exact match found