. 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. RANUNCULACEAE. Vol. II. i6. SYNDESMON Hoffmg. Flora, 15: Part 2, Intell. Bl. 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 t
. 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. RANUNCULACEAE. Vol. II. i6. SYNDESMON Hoffmg. Flora, 15: Part 2, Intell. Bl. 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 Anemone and Thalictrum.] A monotypic genus of eastern North T. Syndesmon thalictroides (L.) Hoffmg. Rue-Anemone. Fig. 1891. Anemone thalictroides L. Sp. PI. 542. 1753. Thalictrum aiiemonoides Michx. Fl, Bor. Am. i 322. 1803. Syndesmon thalictroides Hoffmg. Flora 15 Part 2, Intell. Bl. 4, 34. 1832. Anemonella thalictroides Spach, Hist. Veg. 7 240. 1839. Low, glabrous, 4'-9' high, the flowering stem arising in early spring from the cluster of tuberous roots, the ternately-compound basal leaves appearing later and resembling those of Thalictrum. Leaves of the involucre similar, sessile, the leaflets long-petioled; sepals 5-10, white or pinkish, longer than the stamens; flower ¥-1' 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.] Mill Card. Diet. Abr. Ed. 4. 1754. Perennial scapose herbs, with thick rootstocks, basal long-petioled digitately divided leaves, and large purple or white solitary flowers. Involucre
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