Pyrola secunda L.
Gleason, Henry A. & Cronquist, Arthur J. 1991. Manual of vascular plants of northeastern United States and adjacent Canada. lxxv + 910 pp.
Species Description - Lvs elliptic to broadly ovate or subrotund, 1.5–4 cm, obtuse or rounded, entire to crenate-serrate, obtuse or rounded at base, often separated by conspicuous internodes; scape 1–2 dm; raceme crowded, secund; sep semi-orbicular to ovate, 0.5–1 mm; pet white or greenish, 5 mm; anthers 1.5–2 mm, truncate, opening by large pores, rounded at base; style elongate, exsert at anthesis; 2n=38. Moist woods and mossy bogs; circumboreal, in Amer. s. to N.J., Md., Ind., Minn., and N.M. Differs from other spp. of Pyrola in having a 10-lobed, hypogynous disk, basally bituberculate pet, and simple pollen grains (not in tetrads), and perhaps best considered to form a distinct genus, Orthilia secunda (L.) House. (Ramischia s.)