QUERCUS 



QUERCUS 



2SS5 



3311. 



Quercus 



Kelloggii. 



(XH) 



slender branches forming a conical, round-topped head : 

 Ivs. obovate, 3-lobed at the apex or sometimes entire, 

 rarely pinnatifid above the middle, dull bluish green 

 above, paler beneath, soon glabrous except axillary 

 tufts of brown hairs beneath, l%-3 in. long: fr. short- 

 stalked; acorn globose-ovoid, J^-^in. high, 

 embraced one-fourth to one-third by the 

 saucer-shaped cup. Del. to Fla., west to 

 Ky. and Texas. S.S. 8:428. Of rapid 

 growth and easily transplanted; often 

 planted as avenue tree in the S., but not 

 quite hardy X. Usually called Q. aquatica. 

 12. marilandica, Muench (Q. riigra, Wang. 

 Q. ferruginea, Michx.). BLACK JACK. JACK 

 OAK. Tree, to 30, sometimes to 50 ft., with 

 short spreading branches forming a narrow, 

 round-topped or often irregular head: Ivs. 

 obovate, 3-5-lobed at the broad apex, with 

 broad, entire or sparingly toothed lobes, glabrous and 

 dark green above, at length glabrous and yellowish 

 green beneath, brownish tomentose at first : fr. short- 

 stalked; acorn ovoid-oblong, %in. high,, embraced one- 

 third to two-thirds by the turbinate cup. N. Y. to Fla., 

 west to Xeb. and Texas. S.S. 8:426, 427. There are 

 hybrids with Q. ilicifolia, Q. Phdlos, and Q. imbricaria. 

 Handsome tree, with large glossy foliage; hardy X. 

 Better known as Q. nigra, but this name really belongs 

 to the preceding species. 



13. Phellos, Linn. WILLOW OAK. Figs. 3306, 3307. 

 Tree, to 50 ft., sometimes becoming 80 ft., with rather 

 slender branches forming a conical, round-topped head: 

 Ivs. short-petioled, linear-oblong, bright green and glossy 

 above, pubescent below when young, glabrous and light 

 green at length, 2^-4 in. long: frs. almost sessile, acorn 

 subglobose, ^-^in. high, embraced about one-fourth 

 by the saucer-shaped cup. N. Y. to Fla., west to Mo. 

 and Texas. S.S. 8:435. Gt. 29, p. 221. A.G. 17:195. 

 F.E. 18:592 (pi. 87). R.H. 1898, p. 149. Hybrids 

 have been recorded with Q. palustris, Q. rubra, Q. vdu- 

 tina, Q. ilicifolia and Q. marilandica. Beautiful hardy 

 medium-sized tree with handsome foliage turning pale 

 yellow in fall; prefers moist or almost swampy soil. 



14. laurifdlia, Michx. LAUREL OAK. Tree, to 60, 

 occasionally to 100 ft., with comparatively slender 

 branches forming a dense, round-topped head: Ivs. 

 oblong or oblong-obovate, sometimes slightly lobed, 

 acute or rarely obtusish, dark green and shining above, 



light green and puberu- 

 lous at first, glabrous at 

 length below, 2-6 in. long: 

 fr. short-stalked; acorn 

 ^^ ovoid or subglobose, about 



W S ^Bk\^ ^iin. long, embraced one- 



fourth by the saucer- 

 shaped cup. Va. to Fla. 



i. (XH) p j, ig.oQfl /'i eyy\ _ 



Handsome tree with almost half-evergreen glossy foli- 

 age, often planted as avenue tree in the southern and 

 Gulf States; a particularly good form of this species is 

 in the trade as "Darlington oak." Xot hardy N. 



15. imbricaria, Michx. SHINGLE OAK. Tree, to 60, 

 rarely to 100 ft., with slender and somewhat pendulous 

 branches, of pyramidal habit in its youth, round-topped 

 when old: Ivs. oblong or oblong-lanceolate, dark green 

 and glabrous above, grayish tomentulose beneath, 3-7 

 in. long: fr. short -stalked; acorn subglobose, ^in. long, 

 embraced one-third to one-half by the turbinate cup. 

 Pa. to Ga., west to Xeb. and Ark. S.S. 8:432. A.G. 

 17:195. Mn. 6:91. Beautiful oak of symmetrical 

 habit with handsome glossy foliage, turning russet-red 

 in fall. There are hybrids of this species; with Q. mari- 

 landica, Q. veluiina, Q. rubra, and Q. palustris, of which 

 the last is in the trade as Q. palustri-imbricdria, 

 Engelm.: it has oblong-lanceolate Ivs. entire or coarsely 



toothed, with bristly teeth, soon glabrous, 4-6 in. long: 

 cup turbinate. 



Subgenus LEPIDOBALAXUS. White Oaks. 



16. variabilis, Blume (Q. chin&nsis, Bunge, not Abel. 

 Q. Bungeana, Forbes. Q. serrdta, Carruth., not Thumb.). 

 Tree, to 80 ft.: lys. slender-petioled, oblong to oblong- 

 lanceolate, acuminate, crenately serrate, with bristle- 

 like teeth, dark green and glabrous above, whitish 

 tomentulose below, 3J^-6 in. long: fr. almost sessile; 

 acorn subglobose, not much exceeding the large cup; 

 scales thick, lanceolate, recurved. N. China, Japan. 

 S.I.F. 1:28. Handsome tree with distinct foliage 

 almost like that of Ca-stanea crenata; has proved hardy 

 in Mass, and W. N. Y. 



17. dentate, Thunb. (Q. Daimio, Hort. Q. obovata, 

 Bunge). Tree, to 80 ft., with broad, round-topped 

 head: Ivs. short-petioled, obovate, sinuately toothed, 

 with 3- rounded broad teeth on each side, dark green 



3313. White oak. Quercus alba 

 (XJi). No. 31. 



and usually glabrous above at length, light green and 

 pubescent beneath, firm and leathery, to 12 in. long: 

 fr. almost sessile; acorn ovate, J-5in. long, embraced 

 one-half by the large cup ; scales lanceolate, thin, spread- 

 ing and recurved. Japan, W. China. S.I.F. 1:27. F.E. 

 14:542 (pi. 29). Remarkable for its large Ivs., on 

 young plants to 1 ft. long and 8 in. broad; hardy X. 

 Var. pinnatifida, Matsum. (Q. pinnatifida, French. & 

 Sav.). Lvs. divided almost to the midrib into linear 

 lobes with crisp irregular margins; interesting form. 



18. mongdlica, Fisch. Tree, to 100 ft.: branchlets 

 glabrous: Ivs. on very short petioles less than J^in. long, 

 obovate to obovate-oblong, obtuse at the apex, nar- 

 rowed toward the rounded or auriculate base, coarsely 

 toothed or sinuately lobed, with short and broad usually 

 obtuse or obtusish teeth, dark green above and glabrous, 

 paler green and glabrous beneath or pilose on che veins 

 only, 4-8 in. long: fr. several or solitary on a short stalk 

 or nearly sessile; acorn ovoid or ellipsoid, about %in. 

 long, embraced about one-third by the cup which is 

 grayish tomentulose with thickened tuberculate scales, 

 thinner and acuminate at the slightly fringed margin. 

 E. Siberia, N. China, Korea, N. Japan. Var. grosseser- 

 rata, Rehd. & Wilson (Q. grosseserrata, Blume. Q. 

 crispula, Blume). Lvs. somewhat smaller, usually 

 acutish at the apex with acute or acutish sometimes 

 denticulate teeth: cup with thin closely appressed 

 scales, not fringed at the margin. Japan. S.I.F. 1 :27. 

 Some Japanese botanists distinguish Q. crispula as a 

 species by the hemispherical cup inclosing the acorn 

 about one-half from Q. grosseserraia which has a 

 saucer-shaped cup inclosing the acorn one-fourth or 

 one-third, but many specimens are intermediate in this 

 character, and, as the Ivs. of the two forms are exactly 

 alike, it seems hardly possible to distinguish these two 



