Synoptical Flora Of North America: Vol. Ii.-part I. Gamopetalae After Compositae/fr-ca/synoptical-flora-of-north-america-vol.-ii.-part-i.-gamopetalae-after-compositae/2A6E476B-AC0B-4F54-B895-155D7348136A.html2A6E476B-AC0B-4F54-B895-155D7348136A
Synoptical Flora Of North America: Vol. Ii.-part I. Gamopetalae After Compositae