340 



FAGACEAE (BEECH FAMILY) 



white-tomentose beneath or at length smoothish, 

 the lobes triangular to oblong, acute or obtuse, 

 entire or sparingly toothed ; cup round-ovoid, 

 thin, with rugged pointed scales ; acorn about 2 

 cm. long. — River swamps, N. J. to Ind., Mo., 

 and southw. Fig. 672. 



4. Q. macrocdrpa Michx. (Bdr O., Over- 

 cup or Mossr-cup 0. ) Leaves obovate or oblong, 

 lyrately pinnatifid or deeply sinuate-lobed, or 

 nearly parted, sometimes nearly entire, irregular, 

 downy or pale beneath; the lobes sparingly and 

 obtusely toothed, 

 or the smaller ones 

 entire; cup deep, 

 thick and woody 

 (2-5 cm. across), 

 with hard and thick 

 pointed conspicu- 

 ously imbricated 

 scales, the upper 

 Q. lyrata. ^^^g awned, usu- 



ally making a mossy-fringed border ; acorn broadly 

 ovoid, half immersed in or entirely inclosed by the 

 oup. — Rich soil, N. S. to Man., s. to w. Mass., 

 Ky., and Tex. — A large and valuable tree ; ex- 

 tremely variable in the size and fringe of the 

 cups. Fig. 673. Var. olivaeformis (Michx. f.) 

 Gray is a narrower-leaved form with small sub- 

 cylindric acorns. 



5. Q. bicolor Willd. (Swamp White 0.) Leaves 

 obovate or oblong-obovate, wedge-shaped at base, ^^^ q n,acrocarpa 



Hoarsely sinuate-crenate and often rather pinnati- 

 fid than toothed, usually soft-downy and white-hoary beneath, the primary veins 

 lax and little prominent ; cup \—l as long as the acorn, woody, the upper scales 

 awn-pointed, sometimes forming a mossy-fringed 

 margin ; acorn 2-3 

 cm. long. (O. 

 platanoides Sud- 

 worth.) — Borders 

 of streams and 

 swamps, s. Me. to 

 Ont., Minn., and 

 southw. — A large 

 tree, with flaky 

 Fig. 674. 

 Q. Michauxii 

 (Basket 0., 

 O.) Leaves 

 or obovate, 

 acute, obtuse, or 

 even cordate at 

 ' base, regularly 

 dentate (seldom 

 deeply), rather 

 rigid, commonly 

 tomentose beneath ; stamens usually 10 ; fruit 

 short-pedunoled ; cup shallow, tuberoulate with 

 hard and stout acute scales, tips of the inner- 

 most often forming a stiff fringe ; acorn ovold- 

 subcylindric, twice as high as the cup, about e75. Q. Miohauxii. 



bark. 

 6. 

 Nutt. 

 Cow 

 oval 



