2 



FAGACEAE. 



6. Quercus digitata (Marsh.) Sudw, 

 Spanish Oak. (Fig. 1233.) 



Quercus nigra digitata Marsh. Arb. Am. 121. 1785, 

 Q.falcata Michx. Hist. Chen. Am. 16. pi. 28. i8oi_ 

 Quercus digitata Sudw. Card. & For. 5: 99. 1892. 



A tree, with maximum height, of about 95, 

 and trunk diameter of 5. Leaves dark green 

 and glabrous above, gray-tomentulose beneath, 

 deeply pinnatifid into 3-7 linear or lanceolate 

 lobes, often falcate, acuminate, entire or den- 

 tate; teeth and apices bristle-tipped; terminal 

 lobes commonly elongated; styles slender; fruit 

 maturing during the second autumn ; cup saucer- 

 shaped with a turbinate base, 5"-j" broad, its 

 bracts ovate, obtuse, appressed; acorn subglo- 

 bose or depressed, about twice as high as the cup. 



In dry soil, Long Island (?), New Jersey to Flor- 

 ida, Missouri and Texas. Wood hard, strong, 

 coarse-grained, light reddish-brown; weight per 

 cubic foot 43 Ibs. May-June. Acorns ripe Sept.-Oct. 



7. Quercus nana (Marsh.) Sarg. Bear or Scrub Oak. (Fig. 1234.) 



Quercus rubra nana Marsh. Arb. Am. 123. 1785. 

 Quercus ilici folia Wang. Amer. 79. pi. 6. f. 17. 1787. 

 Quercus nana Sarg. Card. & For. 8: 93. 1895. 



A shrub or rarely a small tree, often forming 

 dense thickets, maximum height about 25, and 

 trunk diameter 6'; bark gray, nearly smooth. 

 Leaves mostly obovate, 2 / -5 / long, short-petioled, 

 dark green and glabrous above, grayish-white 

 tomentulose beneath, 3-7-lobed; lobes triangular- 

 ovate, acute, bristle-tipped; styles recurved; fruit 

 maturing the second autumn; cup saucer-shaped, 

 4 // -6 // broad, with a turbinate or rounded base; its 

 bracts lanceolate, appressed; acorn globose-ovoid, 

 more or less longer than the cup. 



In sandy or rocky soil, Maine to Ohio, Delaware, and 

 the mountains of Virginia and Kentucky. Wood hard, 

 strong, light brown. May. Acorns ripe Oct. -Nov. 



A hybrid of this, presumably with Q. coccinea, was 

 found by Dr. Robbins at Uxbridge, Mass. 



8. Quercus Marylandica Muench. Black-jack or Barren Oak. (Fig. 1235.) 



Quercus nigra /3 L. Sp. PI. 995. 1753. 



Quercus Marylandica Muench. Hausv. 5: 253. 1770. 



A tree, sometimes 60 high, usually lower; maxi- 

 mum trunk diameter 2; bark nearly black, very 

 rough in ridges. Leaves obovate in outline, stel- 

 late-pubescent above and brown-tornentose beneath 

 when young, 3~5-lobed toward the broad usually 

 nearly truncate apex, cuneate below, the lobes 

 short, entire or sparingly toothed, bristle-tipped; 

 mature leaves dark green, glabrous above, paler 

 and more or less floccose beneath, $'-j' long, 2 / -5 / 

 wide; fruit maturing the second autumn; styles 

 recurved; cup deep, 5 // -8 // broad, its bracts oblong- 

 lanceolate, appressed, pubescent; acorn ovoid, 2-3 

 times as high as the cup. 



In dry soil, Long Island, N. Y., to Ohio and Nebraska, 

 south to Florida and Texas. Wood hard, strong, dark 

 brown;' weight per cubic foot 46 Ibs. May-June. 

 Acorns ripe Oct.-Nov. 



Quercus Rudkini Britton, Bull. Torr. Club, 9: 14, a hybrid of this with Q. Phellos, occurs from 

 Staten Island, N. Y., to North Carolina. 



Quercus Brittoni W.T. Davis, Scien. Am. 67: 145, is a hybrid with Q. ilicifolia. Staten Island, N. Y. 



