ROSACEAE: Rose Family
KEY TO SPECIES OF AMELANCHIER
1. Leaf blades overlapping in bud, when mature the base cuneate or gradually tapering to a short petiole. Flowers 1-3(4) per group, one terminal and the others in leaf axils, or very rarely in few-flowered racemes (West Virginia and northward) ............................................................... A. bartramiana
1. Leaf blades folded on themselves in bud and upon first appearing, when mature the base cordate to rounded or rarely obtuse, occasionaly some acute. Flowers several to more commonly many in racemes (in Southeast: West Virignia and southward) ................... 2
2. Plants with abundant basal suckers or sprouting from underground runners and in colonies ................................................................ 3
3. Leaf blade toothed usually along apical 2/3 of margin only; ovary summit hairy .................................................. A. stolonifera
3. Leaf blade usually toothed to base or nearly so; ovary summit glabrous ............................................................ A. obovalis
2. Plants without suckers or rarely a few, solitary, lacking underground runners ............................................................................ A. sanguinea