Publication: Phytologia. 77: 277. 1995.
selected vouchers: WTU
Notes: FNA20: "Symphyotrichum chilense is restricted to coastal habitats from southwestern British Columbia to central California. It is almost entirely coastal in Oregon, Washington, and southern British Columbia, where it is mainly hexaploid (2n = 48). In Oregon, where it is sympatric with S. subspicatum, the latter is mainly duodecaploid (2n = 96). The distinction does not hold in British Columbia, however, where S. subspicatum is both 2n = 48 and 96, and where S. chilense is less common (G. A. Allen 1984). The species was erroneously thought by Nees to occur in Chile. The plants named Aster chilensis var. medius Jepson are hybrids of S. chilense and S. lentum."