Cs. Blaney et al., HYSSOP-LEAVED LOOSESTRIFE, LYTHRUM-HYSSOPIFOLIA L. (LYTHRACEAE), NEW TO CANADA, Canadian field-naturalist, 111(4), 1997, pp. 664-665
Hyssop-leaved Loosestrife (Lythrum hyssopifolia L.) is added to the Ca
nadian flora on the basis of a 1992 collection from near Belleville, H
astings County, Ontario. This European adventive is otherwise known in
the Great Lakes region only from historical records from southeastern
Michigan and central Ohio. Elsewhere in North America, it occurs prim
arily on the east and west coasts.