An erect shrub, 2 to 6 feet high, usually more or less branched above and smooth with reddish stems. Leaves short petioled, blades oblanceolate or obovate, glabrous or nearly so, coarsely toothed, 1 to 2 inches long, one-half to 1 ½ inches wide, usually larger on young shoots, obtuse or slightly pointed at the apex, rounded or tapering at the base, pale beneath. Flowers white or pinkish, in dense terminal panicles, each flower about one-fourth of an inch broad or less; petals four or five, inserted on the calyx; stamens numerous. Pistils commonly five, alternate with the calyx lobes.
Memoir 15 N. Y. State Museum
A. Meadowsweet; Quaker Lady - Spiraea latifolia
In moist or rocky places, in open woods, or in old meadows and along roadsides, Newfoundland to Saskatchewan, Virginia and western Pennsylvania. Flowering from June to August.
The Narrow-leaved Meadowsweet (Spiraea alba Du Roi) has yellowish brown branches, narrowly oblanceolate to oblong leaves and white flowers. It is much less abundant than Spiraea latifolia, and is found in wet soil, Ontario to New York, south to North Carolina, west to Indiana, Missouri and Saskatchewan.