An illustrated flora of the 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 I02 RANUNCULACEAE. Vol. II. i6. SYNDESMON Hoffmg. Flora, 15: Part 2, Intell. BI. 4, 34. 1832. [Anemonella Spach, Hist. Veg. 7: 239. 1839.] A glabrous perennial herb from a cluster of tuberous-thickened roots, with basal 2-3- ternately compound leaves, those of the involucre similar but sessile, and large terminal um
An illustrated flora of the 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 I02 RANUNCULACEAE. Vol. II. i6. SYNDESMON Hoffmg. Flora, 15: Part 2, Intell. BI. 4, 34. 1832. [Anemonella Spach, Hist. Veg. 7: 239. 1839.] A glabrous perennial herb from a cluster of tuberous-thickened roots, with basal 2-3- ternately compound leaves, those of the involucre similar but sessile, and large terminal umbellate slender-pedicelled white flowers. Sepals thin, petaloid. Petals none. Stamens all anther-bearing. Achenes terete, deeply grooved; stigma sessile, truncate. [Greek, bound together, the plant uniting many of the characters of Aiicmuiie and Tkalictrum.] A monotypic genus of eastern North America. T. S3mdesmon thalictroides (L.) Hoffmg. Rue-Anemone. Fig. Syiidesmon thalictroides Hoffmg. Flo Part 2, Intell. Bl. 4, 34. 1832. Anemonella thalictroides Spach, Hist. ' 240- 1839. eg. 7 ; Low, glabrous, 4'-9' high, the flowering stem arising in early spring from the cluster of tuberous roots, the temately-compound basal leaves appearing later and resembling those of ThaUctrum. Leaves of the involucre similar, sessile, the leaflets long-petioled ; sepals 5-10, white or pinkish, longer than the stamens; flower V-i' broad; flowers perfect, umbellate immediately above the involucre; achenes sessile, pointed, 4'-6' long. In woods. New Hampshire and Massachusetts to Florida, Ontario, Minnesota and Kansas. Leaflets are occasionally borne on the stem below those of the involucre. March-June. Wind- flower. May-flower. 17. PULSATILLA [Tourn.] jMill. Card, Diet. Abr. Ed. 4. 1754. Perennial scapose herbs, with thick rootstocks, basal long-petioled digitately divided leaves, and large purple or wdiite solitary flowers. Involucre remote from the flower, 3-leaved. Sepals petaloid. Petals none.
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