Cup of fruit not fringed; apex of lobes of leaves generally acute; trees of swamps in the extreme southwestern counties of Indiana. 8 Q. lyrata. Bark dark, tight and furrowed; leaves with bristle tips; fruit maturing the second year. Leaves entire 9 Q. imbricaria. Leaves more or less deeply lobed, the lobes and teeth conspicuously bristle pointed. Mature leaves smooth beneath, except tufts of hairs in the axils. Leaves lobed to about the middle, the lateral lobes broadest at the base; cup saucer-shaped; nut about 1.5-2 cm. in diameter; terminal buds reddish. 10 Q. rubra. Leaves lobed to beyond the middle, frequently those grown in dense shade not so deeply lobed, some or all of the lateral lobes broadest toward the apex. Cup saucer-shaped, rarely enclosing the nut for more than 1/3 its length; trees of the low lands and swamps. Leaves glossy above; blades usually 10-12 cm. long; cups usually 1.5 cm. or less broad; terminal buds chestnut brown. 11 Q. palustris. Leaves dull above, usually about 15 cm. long; cups 1.5-2.5 cm. broad, rarely as narrow as 1.5 cm.; terminal buds grayish brown. 12 Q. Schneckii. Cup hemispheric, generally enclosing the nut for half its length; trees of the uplands. Inner bark yellowish or orange; kernel of nut yellowish or orange, and very bitter. Terminal buds usually 5 mm. or less in length, ovoid and generally blunt, reddish-brown; scales of cup closely appressed; trees local in the extreme northwest part of the State. 13 Q. ellipsoidalis. Terminal buds usually longer than 6 mm., usually angled and sharp-pointed; scales of cup not closely appressed; trees of all parts of the State 14 Q. velutina. Inner bark reddish or gray; kernel white and not very bitter 15 Q. coccinea. Mature leaves more or less pubescent on the whole under surface. Leaves grayish or yellowish pubescent beneath; scales of cup with a reddish-brown border; nut enclosed for about 1/3 its length 16 Q. falcata. Leaves brownish or rusty pubescent beneath, sometimes appearing grayish; scales of cup without a dark border; nut enclosed for about half of its length.