Leaves oblong-obovate to elliptic or lanceolate, undulate, serrate-toothed or irregularly lobed; cup of the fruit hemispheric to cup-shaped. 37. Q. Mohriana (C). Leaves oblong to oblong-ovate, slightly lobed or entire; cup of the fruit cup-shaped or rarely saucer-shaped. 38. Q. Laceyi (C). Leaves yellow-green. Leaves entire or slightly lobed. Leaves different on upper and lower branches, oblong to oblong-obovate, slightly lobed or entire. Cup of the fruit cup-shaped. 39. Q. annulata (C). Cup of the fruit shallow saucer-shaped. 40. Q. Durandii (C). Leaves similar on upper and lower branches, entire or slightly sinuate-lobed toward the apex, oblong or oblong-obovate. 41. Q. Chapmanii (C). Leaves more or less deeply sinuate-lobed. Leaves white-tomentulose below (sometimes green and pubescent in 43). Leaves obovate or oblong, lyrately pinnatifid or deeply sinuate-lobed; cup of the fruit fringed by the awned scales. 42. Q. macrocarpa (A, C, F). Leaves obovate-oblong, deeply 5—9-lobed or pinnatifid; nut often inclosed in the cup. 43. Q. lyrata (A, C). Leaves pubescent below. Leaves usually covered above with fascicled hairs, obovate, 3—5-lobed, their lobes truncate or rounded. 44. Q. stellata (A, C). Leaves glabrous above at maturity. Leaves obovate to oblong; cup of the fruit shallow cup-shaped or slightly turbinate, its scales usually thin. 45. Q. Garryana (B, G). Leaves oblong-obovate; cup of the fruit hemispheric, the scales often much thickened. 46. Q. utahensis (F). Leaves oblong-obovate, deeply lobed; nut conic, elongated, inclosed for one-third its length in the cup-shaped cup. 47. Q. lobata (G). Leaves glabrate or puberulous below, oblong to oblong-obovate. 48. Q. leptophylla (F). Leaves glabrous below. Leaves oblong-obovate, usually 5-lobed. 49. Q. austrina (C).