Gaultheria procumbens L.
Gleason, Henry A. & Cronquist, Arthur J. 1991. Manual of vascular plants of northeastern United States and adjacent Canada. lxxv + 910 pp.
Species Description - Leafy stems suberect from a horizontal rhizome, 1–2 dm, with a few lvs crowded near the top; petioles 2–5 mm; blades elliptic or oblong to rarely subrotund, 2–5 cm, entire or crenulate, glabrous; fls 5-merous, on nodding pedicels 5–10 mm; cal saucer-shaped; cor barrel-shaped, 7–10 mm, the rounded lobes 1 mm; fr bright red, 7–10 mm; 2n=44, 88. Dry or moist woods in acid soil; Nf. to Man., s. to Va., Ky., n. Ind., Minn., and in the mts. to Ga. and Ala. July, Aug.