Decumbent shrub, with several prostrate stems giving rise to numerous erect branches mostly 1-3 dm, forming low, compact mats or mounds 3-4 dm wide, lvs generally uniform in size and shape, typically oblanceolate and broadest above the middle; otherwise much like no. 2 [Hypericum hypericoides (L.) Crantz]. Dry, rocky slopes and moist, rich woods; Nantucket, L.I., and N.J. to Va., N.C., and n. Ga., w. to s. O., se. Kans., e. Okla., and e. Tex. July, Aug. (Ascyrum hypericoides var. multicaule)
Gleason, Henry A. & Cronquist, Arthur J. 1991. Manual of vascular plants of northeastern United States and adjacent Canada. lxxv + 910 pp.