MONOECIA. P»)LYAN»RIA. 215 



J^ected and divaricate. 21- iUcifolia. Q. Banistcri, Mich. 

 (Barren Oak, Scnibby Oak.) 



§ II. Fructification annual; leaves awnless. 

 I Leaves lobed. 

 ' 22. obtnsiloba. (Upland White Oak.) /S. * depressa. 

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

 scarcely ever exceeding 3 feet. Hab. On the hills of tiie 

 Missouri tothe confluence of the river Platte, and the last 

 species which appears westward. 23. macrocarpa. (O'.er- 

 C'lp White Oak.) v v. Op. tiit drier alluvial lands of the 

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

 somewliHt suberons, and rimose. 24. olivaformis. (Mossy- 

 cup Oak.) V. T'. With the ab.ove. 25 lyrata. (Over-cup 

 Oak, Swamp Po.^.t Oak.) Gland so far inclosed in tlie cup 

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

 of the Ked Oak. 26, a'.ba. (White-Oak.) 



f I Leaves entire, toothed. 



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

 (Swamp Wliile Oak.) Leaves shorJy peiiolate, broad obo- 

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

 reiiculately veined and tomentose beneatli, dentures large 

 and sinuatcd, numerous, (from l9 to 29); fruit by pairs, cup 

 subhemisplierical, somewha! sqnarrose, gland parth glo- 

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

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

 West Florida. Q. PHnon discvlor, Mich. Ai b. 2. p. 46. t. 6. 



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

 Leaves subsessile, cuneaie-oval and dilated; sometimes 

 partly pinnatifid, the under side softly and lanuginously 

 pubescent, mostly canescent, obsoletely veined, pubescence 

 stellate, dentuies repand, obtuse, (only 13 to 15); fruit 

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

 hemispherical, giand ovate, pubescent. /3. * mollis. Leaves 

 merely toothed, not pinnaiifid, under side 'partly ferrugi- 

 nous and softly pubescent. Hab. In tht swampv 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. 

 iinctoria, at least to Q. velutina q\ Lamark, but the awnless 

 though repand and nearly regular dentures of the leaf pro« 

 nounce its proximate affinity lo be to Q. bicblor-,- th^ leaves 

 are attenuated at the base, and abruptly dilated towards 

 xhe summit, the under sui-face is more ferruginous than 



