Bartonia virginica (L.) Britton, Sterns & Poggenb.

Stem simple to the infl, erect, 1–4 dm; lf-scales usually opposite; infl racemose or paniculate, the branches and pedicels commonly opposite and erect; fls 3–4 mm; sep lance-subulate; pet oblong, usually denticulate, abruptly narrowed to a rounded or obtuse, often mucronate tip; anthers minutely apiculate; 2n=52. Sphagnum bogs and wet meadows; Que. and N.S. to Wis., s. to Fla. and La. Late summer.