P.leucospermum is considered to be a synonym for Porophyllum gracile (1) which is also known as “slender poreleaf”. See Post Porophyllum gracile : Deer Weed for further information on P.gracile. Other synonyms for P.gracile include Porophyllum caesium Greene Porophyllum cedrense Rose & Standl. ex Rydb. Porophyllum confertum Greene Porophyllum confertum var. ochroleucum (Rydb.) I.M. Johnst. Porophyllum junciforme Greene Porophyllum leucospermum Greene Porophyllum nodosum M. E. … Continue reading Porophyllum leucospermum