Picris echioides L. Picris hieracioides L. Picris pauciflora Willd. Picris (oxtongues) is a genus in the family Asteraceae (or Compositae). Picris species are used as food plants by the larvae of some Lepidoptera species, such as the grass moth Diasemia reticularis. Schinia cardui feeds exclusively on P. hieracioides. ... Found on http://en.wikipedia.org/wiki/Picris