Seed of this Mediterranean annual has been imported to feed canaries and other birds for a century or more in Ky. (Gm; Anderson 1924), as elsewhere in North America. The few Ky. colls. may just represent waifs from spilled or discarded seed. P. canariensis is similar to caroliniana, but with larger florets that have distinctive "almost semicircular," mucronate exposed ends of glumes (versus acute to acuminate); 2n = 12 versus 14 (FNA 24).