Kingdom: Plantae (2715)
Phylum: Tracheophyta (2630)
Class: Magnoliopsida (2217)
Order: Myrtales (80)
Family: Onagraceae (19)(family description)
Genus: Clarkia (2)
Epithet: unguiculata Lindl. (2)
unguiculata => having what appear to be claws or finger-nails (anguis, a nail or claw)