Picris ruderalis Salisb. Dataset Cichorieae Systematics Portal Rank SPECIES Published in R.A. Salisbury 1796: Prodr. Stirp. Chap. Allerton Classification genus Helminthotheca species Helminthotheca echioides Name Homonyms Picris ruderalis Salisb. Picris ruderalis F. W. Schmidt ex Willd.