Protologue Description: D. anomala, n. sp. Rootstock interrupted by the union of several prominently fusiform annual segments, slightly to moderately tuberculate-bracteate on a somewhat smooth surface: deep seated: apparently intermediate between this section and the following. Stems 2 to 3.5 dm high, somewhat pubescent, rather slender, solitary or two together, simple or occasionally with an axillary flowering branch. Leaves ternate, pubescent on both surfaces: those of the stem 2, subopposite or separated 1 to 2 cm., or 3 and irregularly alternate a fourth on the branch when present, leafless in one instance, on petioles 1 to 5.5 cm. long: basal rarely when present, similar. Stem-leaflets 2 to 5.5 cm. long, 1 to 3 cm. wide, distinctly short-petiolate, somewhat ciliolate, irregularly subacute- to obtuse-dentate or incised, acutely mucronate; central one more or less deeply cleft to 1-parted on each side, the lateral ones 1-parted to -divided on the outer side. Flowers "nearly white, just tinged with rose or purple:"1 petals 10 to 12 mm. long, obovate, rounded at the apex, 3 times length of the ovate-oblong obtuse sepals which are 3 to 4 mm. long and distinctly smaller than any other of our species. Pedicels 7 to 20 mm. long, slender in flower. Pods not seen.-Plainville, rich moist woods, 5 May, 1902, C.H. Bissell; 11 May, 1902, C.H. Bissell. (Type material in herb. Bissell, also in herb. Gray and in the author's herbarium.)