Callitriche terrestris Raf.

Stems tufted, 2–5 cm; lvs spatulate or oblanceolate, 2–5 mm, obscurely 3-nerved, not lepidote; pedicels ± erect, half to fully as long as the fr; fr 0.5–0.7 mm, 0.7–1 mm wide, deeply notched at both ends, its lobes very narrowly winged and separated by a deep groove; style persistent, recurved, shorter than the fr; 2n=10. Damp, usually shaded soil; Mass. to O., s. to Fla. and Tex. (C. deflexa var. austinii)