An illustrated flora of the northern United States, Canada and the British possessions : from Newfoundland to the parallel of the southern boundary of Virginia and from the Atlantic Ocean westward to the 102nd meridian ed2illustratedflo02brit Year: 1913 Caltha flabellifolia Pursh. Mountain Marsh-marigold. Fig. 1854. Caltha flabellifolia Pursh, Fl. .^m. Sept. 390. flabellifolia T. & G. Fl. N. A. Weak, slender, reclining or ascending, i°-ii° long, glabrous. Basal leaves 2-4' broad, long- petioled, flabelliform or reniform, with a wide open sinus; the upper sessile or short-petioled, simi
An illustrated flora of the northern United States, Canada and the British possessions : from Newfoundland to the parallel of the southern boundary of Virginia and from the Atlantic Ocean westward to the 102nd meridian ed2illustratedflo02brit Year: 1913 Caltha flabellifolia Pursh. Mountain Marsh-marigold. Fig. 1854. Caltha flabellifolia Pursh, Fl. .^m. Sept. 390. flabellifolia T. & G. Fl. N. A. Weak, slender, reclining or ascending, i°-ii° long, glabrous. Basal leaves 2-4' broad, long- petioled, flabelliform or reniform, with a wide open sinus; the upper sessile or short-petioled, similar or with truncate bases, all crenate or dentate; flow- ers yellow, 6'-9' wide, solitary or 2-3 together; sepals oval; achenes 4-10, about 4' long, com- pressed. In cold shaded mountain springs, Pocono plateau of Pennsylvania and northern New Jersey to Maryland and recorded from Xew York. Strikingly different from the preceding in habit and appearance. June- July. 3. Caltha natans Pall. Floating Marsh- marigold. Fig. 1855. Caltha natans Pall. Keise Russ. 3 : 284. 1776. Stems slender, floating or creeping in wet places, rooting at the nodes, 6'-i8' long, branching. Lower and basal leaves slender-petioled, cordate-reniform, 1-2' wide, crenate or entire, thin, cordate with a narrow sinus; upper leaves short-petioled, smaller; flowers white or pink, 5'-9' broad; sepals oval, ob- tusish; follicles several or numerous, rather densely capitate, about 2' long, the beak short and straight. 3. TROLLIUS L. .^p. PI. 556. 1753. Erect or ascending perennial herbs, with palmately divided or lobed leaves, thickened fibrous roots, and- large usually solitary yellowish, white, or purplish flowers. Sepals 5-15, petaloid, deciduous. Petals 5-00, small, unguiculate, linear, with a nectariferous pit at the base of the blade. Carpels 5-00, sessile, many-ovuled, forming a head of follicles in fruit. Stamens numerous. [Old German, trol, something round.] About 12 species, mainly inhabiting marsh
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