.'.'J COM M OX CAN.MMAN WILD PLAN1 



iher) in the prickly 4-valvcd involucre, flattened \\hi-n there are i.ioro 

 than cue. 



Fugus. Sterile flowers in a small head on drooping pedunc! 



.s/T7!(/. Fertile {lowers in pairs in the involucre, which consists of awl- 

 shaped bnictiets grown together at the bases. Calyx-lol >.:; awl-shaped. 

 Xutx S iiifjl-.'i!, ', ' :ir-like f t -valvcd cupule. liark 



. smooth, and light gray. 



Cor'ylus. Sterile flowers in drooping catkins. Xo calyx. Staniti 



l-i'clled anthers), and '2 muali bmetlets under each bract. Fertile flowers 

 in a small scaly head; one ovary, surmounted 1>y li long > 

 under caeh seale, and Accompanied by a pair of bractiets which, i, 

 enlarge and form a leaf-like or tubula rfrinned in- tout: [i,*el// 



1 each nut. Sterile catkins from the axils of the previous year. 

 Fertile flowers terminating the new shoots. 



Os'trya. Sterile flowers in drooping catkins. Calyx icanting. Stamens 



nil under each bract, but not accompanied by bracil>'t,<. Fertile 



flowers in short catkins, 2 under each bract, each ovarv tipped with '1 



long stigmas, and surrounded by a tubular bractlct which, in fruit, l>i>- 



coincs a greenish-white inflated bay, having the a-tiudl nut in the bottom. 



Carpi'iius. Sterile flowers in drooping catkins. Calyx I'-nnfitifi. Stamens 

 several under each bract; no bracelets. Fertile flowers niiicii 

 Ostyra, but the bractlets siirroii-iidinj the ovaries ar-> not titbit.'-:. 

 open, and in fruit bceninf, leaf -like, one on each aide, of the small nut. 



1. aUERCUS.L. OAK. 



* Acorns ripening the f.rst year, and therefore borne on the new xhm.t. 

 or teeth of the leave* not bristle-jointed. 



1. Q. alba, L. (WHITE OAK.) A large tree. Lcivc.s (when 

 mature) smooth, bright green above, whitish beneath, obliquely 

 cut into few or several oblong entire lobes. The oblong nut much 

 larger than the saucer-shaped rough cupule. Rich woods. 



2. Q. inacrocar'pa, Michx. (Bun OAK. MossY-crr WHITE 



OAK. i A medium-sized tree. Leaves deeply fobcd, smooth above, 



pale or downy beneath. Acorn broadly ovoid, licdf or . '/'./<///<'/ 



' Inj the deep cup, the, upper xrrt/rx of'tr/ilch in per info /.//>//// 



:>(/, harder. Cup varying greatly in si/c, 



often very large. Rich soil. 



3. Q. bi'color, Willd. (SWAMI- \VHITE OAK.) A ta!' 



''.-fuofh'-'l, but haj-dly loli, :ij>l at. ///> li<t*,\ 



>r Jtoftrt/ beneath, tiio m:iiii \'< i:is (i S pairs. ('u ; > in-.-irly 

 hemispherical, about half as loii,^ as the oblong-ovoid .. 



