STORRS AGRICULTURAL EXPERIMENT STATION. 339 



121. Bark of trunk flaky 122 



121. Bark of trunk not flaky 124 



122. Lateral buds generally appressed, buds downy; older twigs often 

 with corky ridges Bur Oak (W) (Quercus mucroca) tJoJv.^'Mi 



122. Lateral buds divergent, buds smooth; twigs without corky ridges 

 123 



123. Buds narrow conical, pointed 



Chlmniapiii Onk * W) (Quercus Muhlenherpii) ]^.440 



133. Buds shorter, blunt AVhite Oak (W) (Quercus allja)it.43'2 



124. Surface of buds pale-woolly 125 



124. Surface of buds not woolly 127 



125. Inner bark of trunk orange-yellow; whole surface of bud woolly; 

 buds large, ovate- conical. Ulaek Oak (B) (Quercus velutina) p.452 



125. Inner bark of trunk not yellow; not more than upper haif of bud 

 "^''oolly 126 



126. Buds sharp-pointed; ovate, the ^^idest part about y^-Vn above 



base; slightly or not at all woolly toward apex 



Red Oak (B) (Quercus ruhra}vA4G 



126. Buds blunt-pointed; oval-ovate, the widest part at or slightly 



below middle; distinctly woolly above middle 



Scarlet Oak (B) (Quercus coccinea) p.450 



127. Fissures of bark separated by long flat ridges; buds ovate, more 



or less constricted at base; twigs not bitter 



Red Oak (B) (Quercus ru'bra}-pA4G 



127. Fissures of bark separated by long rounded ridges; buds narrower, 

 conical, seldom constricted at base; twigs more or less bitter when 

 chewed Chestnut Oak (W) (Quercus Jr'iinus) p.444 



12S. Buds narrow, conical 129 



12S. Buds short, blunt 132 



129. Bark of trunk flaky 130 



129. Bark of trunk not flaky 131 



130. Buds downy, lateral buds generally appressed; older twigs often 

 with corky ridges Rur Oak (W ) (Quercus ■jnacrocarpa) p.43G 



130. Buds smooth, lateral buds divergent, twigs without corky ridges 

 C'liiuquapiu Oak (W) (Quercus Muhleyihergii) p. 440 



131. Twigs of past season dull, finely downy; shrubs 



Bear Oak (B) (Quercus iUcifolia)p.4o4 



131. Twigs smooth, shining; slender pin-like twigs numerous, arising 



at nearly a right angle with the branchlets; trees 



Piu Oak (B) (Q'uercus palustris) p.448 



132. Bark on branchlets peeling into long, dark, stiff-papery layers. 

 Swamp AAbite Oak (W) (Quercus bicolorJpASH 



132. Bark on branchlets not peeling into long. dark, stilf-papery lay- 

 ers 133 



133. Twigs slender, generally not over 2 mm. thick; shrubs 134 



133. Twigs stout, generally over 2 mm. thick: trees 135 



134. Bark of trunk sinooth : young acorns generally found on ^vinter 



twigs; buds more generally conical 



Bear Oak (B) (Quercus ilicifolia)i*.4Ti4 



134. Bark of trunk flaky; young acorns never found on winter twigs. 

 IJivarf Cliiuyuapia Oak (W) (Qu,ercus prinoides lit. 442 



135. Lateral buds generally appressed; buds densely downy; older 



twigs often with corky ridges 



Riir Oak ( '\Y ) (Q'uerc}is macrocarpa) p.43l> 



135. Lateral buds divergent; buds not densHl>' downy; twigs without 

 corky ridges 136 



136. Twigs at least in part covered with very flue close orange-brown 

 down; buds generally nearly hemispherical and about as broad as 

 long I'owt Oak ( W) (Querctis stellata) p.4H4 



136 TwTgs smooth; buds broadlv ovate, distinctly longer than broad. 

 ....". "White Oak (W) (Quercus albajp.4S2 



