. 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. Botany. Gexls j. crowfoot FAMILY, I. TroUius laxus Salisb. American Globe- flower. Fig. 1856. TroUius americanus Muhl. Trans. Amer. 172, name only. 1791. TroUius laxus Salisb. Trans. Linn. Soc. 8: Stems slender, weak, ascending. Leaves all but the upper petioled (the lower peti- oles sometimes a foot long), palmately 5-7-parted, 2-4' wide, the segments obovate, cuneate, lobed
. 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. Botany. Gexls j. crowfoot FAMILY, I. TroUius laxus Salisb. American Globe- flower. Fig. 1856. TroUius americanus Muhl. Trans. Amer. 172, name only. 1791. TroUius laxus Salisb. Trans. Linn. Soc. 8: Stems slender, weak, ascending. Leaves all but the upper petioled (the lower peti- oles sometimes a foot long), palmately 5-7-parted, 2-4' wide, the segments obovate, cuneate, lobed, cleft or toothed; flowers generally solitary, i-*' broad; sepals 5-7, ovate or obovate, obtuse, yellowish-green, spreading; petals 15-25, minute, much shorter than the numerous stamens; tilaments filiform; anthers linear, i" long; head of fruit nearly an inch broad, the follicles 4" long, each tipped with a straight subulate beak of one-fourth its length. In swamps. \ew Hampshire (?), Connecticut to Dela- ware, west to Michigan. May-July. T. albiflorus (A. Gray) Rydb., of the Rocky Mountain region, differs in having white sepals. 4. HELLEBORUS [Tourn.] L. Sp. PI. 557. 1753. Erect perennial herbs, with large palmately divided leaves, the basal long-petioled, the upper sessile and sometimes bracts. Flowers large, white, greenish or yellowish. Sepals 5, broad, petaloid, mainly persistent. Petals 8-10, small, unguiculate, tubular. Sta- mens =0. Carpels generally few, sessile, in fruit forming several-seeded capsules, which are dehiscent at the at maturity. [The classical name for H. orientalis; derivation unknown.] A genus of coarse herbs, comprising about 15 species, natives of Europe and western Asia. Type species : HeUeborus niger L. p^^:7 I. HeUeborus viridis L. Green Helle- bore. Fig. 1857. HeUeborus viridis L. Sp. PI. 558. 1753. Stout, erect, i°-2° high, glabrous. Basal leaves 8-12' broad, on petioles 6'-lo' long, palmately divided into 7-11 obl
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectbotany, bookyear1913
