. 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 102d meridian. Botany; Botany. Genus 25. ROSE FAMILY. 273 2. Sieversia ciliata (Pursh) Rydb. Longplumed Purple Avens. Prairie-smoke. Fig. 2282. Geum ciliatum Pursh, Fl. Am. Sept. 352. 1814. Geum triflonini Pursh, loc. cit. 736. 1814. Sieversia ciliata Rydb. in Britton, Man. 509. 1891. Softly pubescent with short or spreading hairs, sea- pose; scape 6'-i8' high, simple, 3-8-flo\vered at the s
. 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 102d meridian. Botany; Botany. Genus 25. ROSE FAMILY. 273 2. Sieversia ciliata (Pursh) Rydb. Longplumed Purple Avens. Prairie-smoke. Fig. 2282. Geum ciliatum Pursh, Fl. Am. Sept. 352. 1814. Geum triflonini Pursh, loc. cit. 736. 1814. Sieversia ciliata Rydb. in Britton, Man. 509. 1891. Softly pubescent with short or spreading hairs, sea- pose; scape 6'-i8' high, simple, 3-8-flo\vered at the summit. Basal leaves tufted, petioled, interruptedly pinnate with many small leaflets interspersed among the obovate or oval laciniate numerous larger ones; leaves of the scape 2 opposite small sessile pairs, the elongated peduncles commonly bearing another simi- lar pair; flowers several, showy, 6"-9" broad; bractlets linear, slightly exceeding the purple lanceolate acute erect calyx-lobes; petals purplish, erect, about equal- ling the bractlets; head of fruit sessile; style filiform, 1-2' long and strongly plumose throughout in fruit, not jointed. In dry or rocky soil, Newfoundland and Labrador to New York, British Columbia, Illinois, Iowa, North Dakota, and in the Rocky Mountains to Arizona. Races differ in pubescence, and in the shape and toothing of the leaflets. Johnny smokers. 26. DRYAS L. Sp. PI. 501. 1753. Low tufted herbaceous shrubs, with simple petioled stipulate leaves white-canescent beneath, and white or yellow, rather large perfect solitary flowers on slender scapes. Calyx persistent, not bracted, its tube concave, glandular-hirsute, 8-9-lobed. Petals 8 or 9, obovate, larger than the calyx-lobes. Stamens 00, inserted on the throat of the calyx; filaments subu- late. Carpels 00, sessile, inserted on the dry receptacle; style terminal, persistent, elongated and plumose in fruit. Seed ascending, its testa membranous. [Name Latin, a wood- nymph.]
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectbotany, bookyear1913
