Eugene P. Bicknell from Nantucket. One variety, H. canadense var. magninsulare, differs in petal shape. Its petals are ovate or ovate-lanceolate and taper to an acute or obtuse apex. The reflexed petals are a pale yellow tinged with red towards their apex, with clear nerves. In typical H. canadense, the petals have a rounded or subtruncate apex, reflex only towards the end of flowering, lack any red tinge, and have exceedingly obscure nerves. Besides the petals, the variety has the same habit as the typical form. The variety is clearly more than a distinct color form, as some specimens, for example from White Head Island, have petals as pale or paler than the variety though in the same shape as a typical specimen. The distinctness in reflexing and color of petals is mostly lost in drying, and as such the variety is easily distinguishable in the field but difficult to make out in an herbarium. The variety has a distinct preference of habitat as well, preferring wet and open places in the same regions where typical specimens prefer more low-lying and more moist soils. Rarely do the two grow together. The variety name magninsulare is a Latinisation of Grand Manan, the island where the variety was first distinguished and is primarily distributed. Distribution It occurs naturally in eastern parts of Canada and the United States, from Ontario to Newfoundland, south to the northern parts of Florida, and east to Iowa. It is considered extirpated from Manitoba. H. canadense was discovered in Europe as early as 1935 near Almelo in the Netherlands, with previously collected specimens in 1909 determined to be H. canadense as well. The herb was reputed to have been discovered in 1959 in France but has since been shown to be erroneous, the specimens collected being H. majus. H. majus was found in Germany in 1956 and in both France and Germany the herb was likely introduced by American troops. H. canadense was first discovered in Ireland in 1954, with a single plant being found on the shore of Lough Mask. In 1968, the plant was discovered in Ireland again, this time south of Lough Mask in Glengarriff. The Irish plant is more similar to H. canadense var. magninsulare than to the type, given the red line on its petals and its intermediate petal shape, between the narrow, pointed shape of the variety and the lanceolate, rounded shape