Lysimachia ciliata L.
Gleason, Henry A. & Cronquist, Arthur J. 1991. Manual of vascular plants of northeastern United States and adjacent Canada. lxxv + 910 pp.
Species Description - Erect, 4–13 dm, rhizomatous; lvs ovate to lanceolate, 4–14 × 1.5–6 cm, the base rounded (or even subcordate) or obtuse to cuneate, the petiole 0.5–5 cm, evidently ciliate its whole length; fls solitary in the upper axils, on pedicels 1.5–6.5 cm; cal-lobes 3.5–9 × 1.5–4.5 mm, with 3–5 parallel often reddish-brown veins; cor-lobes 5–12 × 3–9 mm; stamens distinct; staminodes linear or subulate; 2n=34, 92, 96, 100, 108, 112. Moist or wet low ground, in shade or sun; N.S. and Que. to B.C. and Alas., s. to Ga., La., N.M., and Oreg. May–Sept. (Steironema c.)