From Flora of Indiana (1940) by Charles C. Deam
A local plant in the northwestern counties, usually common where it is found. It is usually found in moist, open, sandy places about lakes, and was found once along a sandy roadside. Its habitat is doubtless minimacid because the plants most often associated with it are Rhexia virginica, Aletris, Hypericum gentianoides, Polygala cruciata, Gaultheria, and Vaccinium angustifolium.
Stems 3-5 dm, often branched from the base, bearded at the nodes and sometimes sparsely hairy on the angles; lvs firm, sessile or subsessile, linear or linear-oblong, 2-7 cm נ3-7(-12) mm, tapering at base, entire or with a few low teeth; verticils usually remote, the bracts entire, lance-linear; cal glabrous or with a few hairs on the upper side, the lobes glabrous, narrowly deltoid, nearly as long as the tube. Moist, usually sandy soil near the coast; Mass. to Ga.; also around the head of Lake Michigan. July-Sept. (S. atlantica)
Gleason, Henry A. & Cronquist, Arthur J. 1991. Manual of vascular plants of northeastern United States and adjacent Canada. lxxv + 910 pp.
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