diagnostic differences

Nesom, G. 1978. Erigeron hessii sp. nov. and Erigeron kuschei Eastwood (Compositae), two closely related narrow endemics from the southwestern United States. Brittonia 30(4): 440-446.

• type locality
• HABITAT
• morphology
• New Mexico
• diagnostic differences
• Erigeron hessii
• Arizona
• Asteraceae