From Flora of Indiana (1940) by Charles C. Deam
Found sparingly throughout the state. It is usually found in dried-up swamps and ponds in woods, often on old logs, and in the moss on the bases of trees that are growing in or on the border of ponds.
Plants glabrous to densely pubescent, stoloniferous, each stolon ending in a shallow, slender tuber from which a solitary stem arises the next year; lvs thin, lanceolate to elliptic, 5-10 נ1-3 cm, sharply acute to long-acuminate, subentire to sharply serrate, the margins below the lowest tooth concave, forming a petiolar base, or the lf petioled; bracts minute; cal-lobes 5, narrowly triangular, often acuminate but not subulate-tipped; cor 5-lobed, twice as long as the cal; nutlets 1.2-1.5 mm, two-thirds as wide, very flat across the truncate-tuberculate summit, without a distinct dorsal area. Me. to Fla. and Tex., mainly on or near the coastal plain, w. irregularly to s. Mich., and common thence to Ill., Mo., and Ark.
Gleason, Henry A. & Cronquist, Arthur J. 1991. Manual of vascular plants of northeastern United States and adjacent Canada. lxxv + 910 pp.
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