Physalis philadelphica Lam.
Gleason, Henry A. & Cronquist, Arthur J. 1991. Manual of vascular plants of northeastern United States and adjacent Canada. lxxv + 910 pp.
Species Description - Branching annual 2–6 dm, nearly glabrous except on the younger parts, where it is strigillose, often in 2 strips, with decurved hairs; lvs ovate or rhombic, 2–6 cm, entire to sinuate-toothed; pedicels at anthesis 3–5 mm, scarcely longer in fr; cor 7–15 mm, with dark center; anthers blue-purple, mostly 2.5–3.5 mm, becoming twisted or contorted; fruiting cal rounded at base; berry edible, purplish, viscid, nearly filling the cal; 2n=24. Native of Mexico, occasionally escaped from cult. in our range. (P. ixocarpa)