Stems 1-5 dm, papillate-puberulent; lvs ovate or elliptic-ovate to lanceolate, 3-11 נ1-3 cm, scabro-ciliolate; fls in terminal clusters and often sessile in the upper axils or on short lateral branches; cal-tube papillate-puberulent, its lobes mostly deltoid- ovate to elliptic or lanceolate, to 12 mm, ciliolate-margined; cor 3-5 cm, closed, tapering to a narrow top, whitish below, suffused with blue above, the deltoid lobes only 1.5-3 mm, about equaling but only half as wide as the shortly bifid appendages; anthers connate. Upper elev., especially on grassy balds, in the Blue Ridge of Tenn. and N.C. and adj. Va. Sept., Oct.
Gleason, Henry A. & Cronquist, Arthur J. 1991. Manual of vascular plants of northeastern United States and adjacent Canada. lxxv + 910 pp.