Whorled Milkweed (Fourleaf Milkweed)
A slender, single-stemmed perennial with round clusters of usually pink flowers. Flowers technically in loose umbels, either upright or drooping, from 1 to 3 umbels per plant, light pink or cream-colored, nicely fragrant. Blooms May–July. Leaves opposite or whorled. There are 3 or 4 sets of leaves, of which 1 or 2 of the upper sets has 4 leaves in a whorl, the other sets with 2 leaves. Leaves broadly lanceolate, pointed at both ends. Sap milky white.