| − | Potentilla palustris, Scop. (Comarum palustre, Linn.). Suffruticose: stolons long, creeping and branched: aerial sts. ascending, 8 in. to 2 ft. long, glabrous, laxly cymose above and more or less pilose or glandular: basal lvs. pinnate, long-petioled; lfts. 2-3 pairs, contiguous, thick, not veiny, sessile, oblong-lanceolate, 1-3 in. long, evenly and sharply serrate, green above, glaucous beneath, often puberulent, rarely silky: fls. few; sepals dark purplish, large; petals small, ovate-lanceokte, acuminate, pale purple, often villous or ciliate, shorter than the sepals; receptacle spongy; carpels glabrous; style lateral, filiform. June-Aug. Very wet marshes, Arctic and Temp. Eu., Asia, and N. Amer. A striking species for aquatic gardens.
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