Cornus rugosa Lam.
Gleason, Henry A. & Cronquist, Arthur J. 1991. Manual of vascular plants of northeastern United States and adjacent Canada. lxxv + 910 pp.
Species Description - Shrub 1–4 m, commonly more tree-like in form than no. 3 [Cornus sericea L.], often with a single main stem from the base; twigs glabrous or nearly so, light or yellowish-green, often shaded or mottled with red; pith white; lvs ovate to rotund, mostly 7–12 cm, abruptly acuminate, broadly cuneate or usually rounded at base, minutely scaberulous-strigose above, softly and loosely white-hairy to merely strigose beneath with hairs 0.5–1 mm; lateral veins 6–8 on a side; infl flat or slightly convex; fr light blue, 6 mm; 2n=22. Moist or dry, sandy or rocky soil, typically in better-drained sites than no. 3; Que. to n. Ont. and Man., s. to N.J., Pa., n. O., n. Ind. and Io., and in the mts. to Va. May–July. (C. circinata; Svida r.)