This is centered in the lower Mississippi Valley, and occurs on base-rich soils along relatively small streams, often persisting in partial shade (based on published descriptions and colls. at APSC, MO, TENN, etc.). Colls. from LYON (APSC), MARS (MO, WKY), MCRA (MO) and probably elsewhere in Ky. are referable to this taxon. It was treated by Sm and Gl as a species; but by F as A. fruticosa var. croceolanata (P.W. Wats.) P.W. Wats. ex Mouille. Although largely distinct from typical fruticosa of Ky. and Tenn., it may intergrade in some areas. Compared to fruticosa, croceolanata has fruits with short stramineous hairs (versus glabrous), and usually fewer prominent glands or sometimes none (versus distinct). Its leaflets tend to be less numerous, the blades larger (mostly 2.5-6 x 1-4 cm versus 1.5-4 x 0.5-2 cm), and less elongated (L/W mostly 2-2.5 versus 2.5-3). Their lower surfaces, as well as young stems, have dense to scattered, long-sinuous spreading, pale stramineous hairs (versus more short-appressed, greyish hairs or glabrate); they tend to be less clearly glaucous, with fewer prominent glands or sometimes none (versus consistently prominent). Mature, flowering stems are generally shorter (mostly 1-2 m versus 1.5-5 m).