Amelanchier canadensis (L.) Medicus, Gesch. Bot.: 79 (1793) (syn: Amelanchier botryapium var. conferta Farw.; Amelanchier botryapium var. obovalis Farw.; Amelanchier canadensis var. botryapium (L.f.) Torr. & A.Gray; Amelanchier canadensis var. oblongifolia Torr. & A.Gray; Amelanchier canadensis var. semi-integrifolia Farw.; Amelanchier canadensis var. subintegra Fernald; Amelanchier lucida (Fernald) Fernald; Amelanchier oblongifolia (Torr. & A.Gray) M.Roem.; Amelanchier oblongifolia var. walteri M.Roem.; Amelanchier sera Ashe; Amelanchier stolonifera var. lucida Fernald; Aronia affinis J.C.Neumann ex Tausch.; Aronia botryapium (L.f.) Pers.; Aronia canadensis (L.) Farw.; Aronia latifolia Riddell; Crataegus amoena Salisb.; Crataegus racemosa Lam.; Mespilus amelanchier var. canadensis (L.) Castigl.; Mespilus amelanchier var. nivea (Marshall) Castigl.; Mespilus arbutifolia var. virginiana (Mill.) Castigl.; Mespilus canadensis L.Mespilus nivea Marshall; Mespilus virginiana Mill.; Pyrus botryapium L.f.; Pyrus canadensis (L.) Billb.; Pyrus neumanniana Tausch; Pyrus tenuifolia Stokes);
E. Canada to E. U.S.A.: Alabama, Connecticut, Delaware, District of Columbia, Georgia, Maine, Massachusetts, New Brunswick, New Hampshire, New Jersey, New York, North Carolina, Nova Scotia, Pennsylvania, Prince Edward I., Québec, Rhode I., South Carolina, Tennessee, Vermont, Virginia as per POWO;

Amelanchier canadensis from Canada GS 05032024-2: 4 high res. images.
Amelanchier canadensis (Linnaeus) Medikus from Brampton Canada, 

Differs from A. arborea as under:
Petals (8–)10–15(–19) mm; leaf apices acute to acuminate; sepals soon reflexed after flowering; shrubs or trees. Amelanchier arborea
Petals (4–)6–10.2(–15) mm; leaf apices rounded or acute to obtuse and mucronate; sepals erect, spreading, or recurved after flowering; shrubs. Leaf blades elliptic or oval to oblong or obovate; sepals erect, ascending, or  spreading after flowering; ovary apices glabrous (or moderately hairy).Amelanchier canadensis





POWO  Catalogue of Life  The Plant List Ver.1.1  Wikipedia

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