Pallenis

C. Aurich & D. Podlech, Zur Gliederung von Asteriscus spinosus (L.) Schultz Bip. sensu lato (Compositae) in Mitt. Bot. Staatssamml. München 28. 1989
but names used differing
1Tubes of ligular flowers 0.5-0.8(-1.0) mm long; longest bracts mostly 3-4 times longer than ligular flowers
1'Tubes of ligular flowers 1.0-1.5 mm long; longest bracts mostly 5-8 times longer than ligular flowers