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., 



/nd southw. Fig. (372. 

 4. Q. macrocarpa Michx. (Bur O., Over- 

 cup or Mossv-cup O. ) 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), 

 ivith hard and thick 

 pointed conspicu- 

 ously imbricated 

 scales, the upper 

 6T2. Q. lyrata. ^^^^ aicned, usu- 



ally making a mossy-fringed border ; acorn broadly 

 ovoid, half immersed in or entirely inclosed by the 

 cup. — 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 frnige of the 

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

 Gray is a narrower-leaved form with small sub- 

 cyiindric acorns. 



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

 obovate or oblong-obovate, wedge-shaped at base, g^g^ q macrocarpa. 



coarsely sinuate-crenate and often rather pinnati- 

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

 lax and little prominent ; cAip l-h as long as the acorn, vmody, the upper scales 

 awn-pointed, sometiui^^o forming a mossj-f ringed 

 /T\ margin ; acorn 2-3 



cm. long. (Q. 

 plntanoides Sud- 

 worth.) — Borders 

 of streams and 

 swamps, s. Me. to 

 Ont., Minn., and 

 southw. — A large 

 tree, with flaky 

 bark. Fig. 674. 



6. Q. Michauxii 

 Nutt. (Basket O., 

 Cow O.) Leaves 

 oval or obovate, 

 acute, obtuse, or 

 even cordate at 

 base, regularly 

 dentate (seldom 

 deeply), rather 

 rigid, commonly 

 tomentose beneath; stamens usually 10; fruit 

 short-peduncled ; cup shallow, tuberculate with 

 hard and stout acute scales, tips of the inner 

 most often forming a stiff fringe ; acorn ovoid- 

 subcylindric, twice as high as the cup, about 



674. Q. bicolor. 



675. Q. Michauxii. 



