Caltha palustris L.

  • Authority

    Gleason, Henry A. & Cronquist, Arthur J. 1991. Manual of vascular plants of northeastern United States and adjacent Canada. lxxv + 910 pp.

  • Family


  • Scientific Name

    Caltha palustris L.

  • Description

    Species Description - Stems hollow, 2–6 dm, branched above; basal lvs long-petioled, the broadly cordate-rotund blade usually with a deep and narrow sinus; cauline lvs with progressively shorter petiole and wider sinus; fls bright yellow, 1.5–4 cm wide; stamens 50–120; anthers linear-oblong or lance- oblong, 2 mm; follicles 4–15, 10–15 mm; 2n=32. Wet woods and meadows, swamps, bogs, and shallow water; circumboreal, s. to Va., W.Va., Ind., Ill., and Io., and in the mts. to N.C. and Tenn. Apr.–June. Forms with the basal leaves somewhat flabellate, with a relatively broad and open sinus, do not appear to be taxonomically separable. (var. flabellifolia)