Ptilotrichum canescens (DC.) C.A.Mey. Dataset Update on the Brassicaceae Species Checklist Rank SPECIES Published in Ledebour, C.F. von. Fl. Altaica 3: 66. (1831). Classification family Brassicaceae genus Stevenia species Stevenia canescens Name Homonyms Ptilotrichum canescens (DC.) C.A.Mey.