MOXOECIA. FOLYANDRIA. 215 



fiected and divaricate. 21. iUcifolia. Q. £aiiisferi, Mick, 

 'Barren Oak, Scrubby Oak.) 



§ II. Fructification annual; leaves awnless. 

 f Leaves lobed. 



22. obtusiloba. (Upland White Oak.) j8. * depressa. 

 Fruiting at the height of 12 to 18 inches frona the ground, 

 scarcely ever exceeding S feet. Hab. On the hills of the 

 Missouri to the confluence of the river Platte, and the last 

 species which appears westward. 23. macrocarpa. (Ovei- 

 cup White Oak.) v. v. On the drier alluvial lands of the 

 Missisippi;— at Harper's Ferry in Virginia. Branches 

 somewhat suberous, and rimose. 24. oUvaformis. (Mossy- 

 cup Oak.) V. V. With the above. 25. lymta. (Over-cup 

 Oak, Swamp Post Oak.) Gland so far inclosed in the cup 

 as not to be deciduous from it. The tree about the size 

 -'■f the Ked Oak. 26. alba. (White-Oak.) 



f f Leaves entire, toothed. 



27. Primis. (Chesnut White Oak.) 28. * Michauxii. 

 ;Swamp White Oak.) Leaves shortly petiolate, broad obo- 

 vate, about a span long, obtuse at the base, prominently and 

 reticulately veined andtomentose beneath, dentures large 

 and sinuated, numerou,';, (from 19 to 29); fruit by pairs, cup 

 subhemispherical, sonr-what squarrose, gland partly glo- 

 bose, (nearly as large as a walimt.)— A large tree, indige- 

 nous to alluvial lands, from the Delaware to St. Mary's in 

 West Florida. Q. Prims discolor, Mich. Arb. 2. p. 46. t. 6. 



29. bicolor. (Excluding the synonym of Michaux.) 

 Leaves subsessile, cuneate-oval and dilated; sometimes 

 partly pinnatifid, the under side softly and lanuginously 

 pubescent, mostly canescent, obsoletely veined, pubescence 

 .stellate, dentures repand, obtuse, (only 13 to 1.5); fruit 

 long and slenderly pedunculate, from 1 to 3 together, cup 

 Jiemispherical, gland ovate, pubescent. /3. * 7nollis. Leaves 

 merely toothed, not pinnatifid, under side partly ferrugi- 

 iiows and softly pubescent. Hab. In the swampy but 

 elevated forests of Hudson river, near New York, &c. A 

 somewhat pyramidal tree, 60 or 70 feet high, branched 

 nearly from the base, branches deflected and intricately 

 ramified as in Q. palustris, which it thus precisely resem- 

 bles in habit; it bears some distant resemblance to Q. 

 tlnctoricty at least to Q. vehitina of Lamark, but the awnless 

 though repand and nearly regular dentures of the leaf pro- 

 nounce its proximate affinity to be to Q. bicolor,- the leaves 

 are attenuated at the base, and abruptly dilated towards 

 ihe summit, the under surface is more ferruginous than 



