2886 



QUERCUS 



QUERCUS 



forms as varieties. Var. grosseserrata has proved per- 

 fectly hardy at the Arnold Arboretum and forms hand- 

 some trees of vigorous growth. 



19. glandulifera, Blume. Tree, to 40 ft., rarely to 

 70 ft., shrubby in cult. : Ivs. cuneate or rounded at the 

 base, oblong-obovate to oblanceolate, acute with 7-12 



glandular -tipped, 

 acute teeth on each 

 side, light green 

 above, glabrous, 

 whitish or grayish 

 green beneath, ap- 

 pressed silky at first, 

 almost half - ever- 



3314. Staminate catkins. Quercus 

 Robur (XM). No. 32. 



green, -5 n. 

 long: fr. peduncled, 

 usually several; 

 acorn ovate, about 

 J^in. high, em- 

 braced one-third to 

 one-half by the cup. 

 Japan. S.I.F. 1:26. 

 Half- evergreen 

 shrub with hand- 



some foliage, hardy at the Arnold Arboretum. Some- 

 times cult, under the name Q. dentata. Q. glandulifera, 

 Mast., is Q. Pseudoturneri (see suppl. list). 



20. aliena, Blume. Tree, to 50 ft. or more:branchlets 

 glabrous: Ivs. oblong-obovate, obtuse or acutish at the 

 apex, rounded or broadly cuneate at the base, coarsely 

 sinuate-dentate with broad obtuse or acutish teeth, 

 dark yellowish green and glabrous above, whitish or 

 grayish tomentulose beneath, with 10-15 pairs of veins, 

 4-8 in. long; petioles M~/4 m - long: frs. 1-3, short- 

 stalked or nearly sessile; acorn ellipsoid to oblong, 

 %-\ in. long, embraced about one-third by the cup- 

 shaped grayish tomentulose cup, its scales thin, 

 acuminate. S.I.F. 1:28. Japan, Korea, Cent. China. 

 Var. acuteserrata, Maxim. Lvs. usually somewhat 

 smaller and narrower, with acute or acutish gland- 

 tipped teeth often slightly incurved at the apex. Japan, 

 Cent. China. This recently intro. species has proved 

 hardy at the Arnold Arboretum. 



21. Muhlenbergii, Engelm. (Q. Castdnea, Willd., not 

 Ne. Q. acumindta, Sarg., not Roxbg. Q. Prinus var. 

 acuminata, Michx.). YELLOW CHESTNUT OAK. Tree, 

 to 100 or occasionally to 160 ft., with rather short 

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

 slender-stalked, oblong to oblong-lanceolate, acute or 

 acuminate, coarsely toothed with acute, glandular- 

 tipped teeth, dark or yellowish green above, whitish 

 tomentulose beneath, 4-7 in. long: fr. sessile or short- 

 peduncled; acorns ovate, %-%in. long, embraced about 



one -hah by the cup. 

 Term, to Va., west to 

 Neb. and Texas. S.S. 

 8:377. Beautiful tree 

 with light gray bark and 

 handsome foliage, glossy 

 above and silverv white 

 beneath. 



22. prinoides, Willd. 

 (Q. Chincapin, Pursh. Q. 

 Prinus var. Chincapin, 

 Michx.). CHINCAPIN 

 OAK. Spreading shrub, 

 with slender sts., usu- 

 ally not over 6 ft. high, 

 rarely to 15 ft.: Ivs. 

 rather short - petioled, 

 cuneate at the base, 

 ovate-oblong or oblong, 

 with 4-8 sometimes ob- 

 tusish teeth on each 

 side, bright green above, 



grayish tomentulose beneath, 2j^-5 in. long: fr. sessile, 

 acorn oval, about J^in. long, embraced one-half by the 

 cup. Maine to Ala., west to Minn, and Texas. S.S. 

 8:378. Em. 1 : 158. Pretty shrub for covering dry and 

 rocky ridges. In trade sometimes under the mislead- 

 ing name of Q. humilis, for which see suppl. list. 



23. Prinus, Linn. (Q. Prinus var. paLustris, Michx. 

 Q. Michauxii, Nutt.). BASKET OAK. Cow OAK. Tree, 

 to 100 ft., with round-topped, rather dense head: bark 

 light gray, scaly: Ivs. obovate or obovate-oblong, 

 acute, deeply crenulate-toothed, with obtuse, mucronu- 

 late teeth, bright green and shining above, grayish 

 tomentulose beneath, 4-7 in. long: fr. short-peduncled ; 

 acorn ovoid, 1-1 % in. high, embraced about one-third 

 by the tomentose cup. Del. to Fla., west to Ind. and 

 Texas. S.S. 8:382, 383. The Q. Prinus of most recent 

 authors is the following species. One of the most 

 beautiful of the chestnut oaks; prefers moist soil. 



24. montana, Willd. (Q. Pnnus var. monticola, 

 Michx. Q. Prinus, Engelm., not Linn.). CHESTNUT 

 OAK. ROCK CHESTNUT OAK. Fig. 3306. Tree, to 70, 

 or occasionally to 100 ft., with broad, irregular head 

 and dark brown, ridged bark: Ivs. slender-stalked, 

 obovate to oblong-lanceolate, coarsely crenulate- 

 toothed, bright or yellowish green above, paler beneath, 

 tomentulose when young, often almost glabrous at 

 length, 5-8 in. long: fr. solitary or in pairs, on pedun- 

 cles about 1 in. long; acorn ovoid, 1-1 ^ in. high, 

 embraced about one-third by the cup. Maine and Ont. 

 to Ala. S.S. 8:375, 376. Em. 1:155 (as Q. Castanea) 

 and 156. G.C. III. 14:617. G.F. 1:510. Handsome 

 oak, growing well in rather dry soil. A hybrid of this 



3315. English oak. Quercus 

 Robur. (Natural size). No. 32. 



3316. Quercus Robur var. filicifolia 

 (XH). No. 32. 



species and Q. Robur is Q. Sdrgentii, Rehd., a tree of 

 vigorous growth with handsome foliage, chiefly dis- 

 tinguished from Q. montana by the fewer lobes and the 

 auriculate base of the Ivs. 



25. tricolor, Willd. (Q. platanoides, Sudw. Q. Prinus 

 var. tomentosa, Michx. Q. Pnnus var. discolor, Michx. 

 f.). SWAMP WHITE OAK. Fig. 3306. Tree, to 70 ft., 

 rarely to 100 ft., with narrow, round-topped, open 

 head and light grayish brown, scaly bark: Ivs. obovate 

 to oblong-obovate, sinuately dentate, sometimes lobed 

 half-way to the middle, dark green and dull above, 

 whitish tomentulose beneath, 4-7 in. long: fr. solitary 

 or in pairs, on peduncles lJ^-4 in. long; acorn ovate- 



