Riddellia

paperflower

Psilostrophe cooperi
Scientific classification
Kingdom:	Plantae
(unranked):	Angiosperms
(unranked):	Eudicots
(unranked):	Asterids
Order:	Asterales
Family:	Asteraceae
Subfamily:	Asteroideae
Tribe:	Helenieae
Genus:	Psilostrophe DC.
Type species
Psilostrophe gnaphalodes DC.
Synonyms
Riddellia Nutt.

Psilostrophe, the paperflowers is a genus of North American plants in the sneezeweed tribe within the sunflower family.