United States, Arkansas, Washington, Collection data for Dillon et al. 952 (at F): Mexico. Baja California: 5 miles east of Rosario. In the greenhouse in Fayetteville
Woody-based perennial shrub, common; rays white with purple nerves; disc yellow. Raised from achenes from Dillon et al. 952 (see collection note) by Edwin B. Smith. Plant evidently an annual (not a perennial shrub). Chromosome number: n = 12. Pollen stainability = 98%. Reddish line on achene wings present.