Tsuga canadensis (L.) Carrière
Gleason, Henry A. & Cronquist, Arthur J. 1991. Manual of vascular plants of northeastern United States and adjacent Canada. lxxv + 910 pp.
Species Description - Tree to 30 m, the leader nodding; twigs pubescent; lvs 8–15 mm, blunt, usually minutely spinulose on the margin, twisted at the petiolar base to form flat sprays; cones thickly ellipsoid, 12–20 mm, scales persistently erect or ascending, the exposed portion of the middle ones distinctly broader than long. Moist soil, esp. on rocky ridges and hillsides; N.S. to Mich., Wis., and occasionally Minn., s. to N.J., Del., O., and Ind., and in the mts. to Ga. and Ala.