KEY FOR JUNE TO NOVEMBER 



64 a Shrub with aerial rootlets; plant often spreading on 



ground Rhus radicans. p 181 



b Erect tree or shrub not with aerial rootlets. .Ptelea. P 179 



65 a Shrub 3 ft. or less high; flowers yellow, % in. or more 



broad Dasiphora. p 164 



b Shrubs or trees not completely as in a 66 



66 a Flowers about Vz in. long, yellow Koelreuteria. p 18 3 



b Flowers v4 in. or less long, greenish 67 



67 a Flowers in racemes or small clusters; leaflets usually 



toothed Hicoria. p 14.1 



b Flowers in panicles 68 



68 a Leaflets with 2-4 coarse teeth at the base.Ailanthus. p 179 

 b Leaflets entire or toothed, not completely as in a.Rhus.piSl 



Shrubs or Trees With Simple, Alternate Leaves 



69 a Flowers green or greenish, or else without a distinct 



perianth 70 



b Flowers not green, with a distinct perianth 86 



70 a Bark with light-green or whitish patches on the upper 



trunk; flowers in globose balls Platanus. p 163 



b Bark and flowers not completely as in a 71 



71 a Shrub or tree usually with short thorns; pistillate 



flowers in globose heads Toxylon, p 145 



b Shrubs or trees not completely as in a 72 



72 a Milky juice exudes when young branches or twigs are 



CUt ;; ; 73 



b No milky juice exudes when twigs are cut 74 



73 a Twigs very hairy; pistillate flowers in heads 



Broussonetia. p 145 

 b Twigs not very hairy; pistillate flowers in short spikes 



Morus. p 144 



74 a Shrubs growing in salt marshes 75 



b Shrubs or trees not growing in salt marshes 76 



75 a Only the upper leaves alternate, the lower opposite 



I<va. p 221 

 b All leaves alternate Baccharis. p 233 



76 a Leaves more or less lobed 77 



b Leaves entire or toothed, not lobed 78 



77 a Shrubs 5 ft. or less high ; flowers with conspicuous 



perianth Ribes. p 162 



b Shrubs or trees 6 ft. or more high Quercus. p 143 



78 a At least the staminate flowers in aments 79 



b Flowers not in aments 80 



79 a Leaves 4 in. or more long, sharply and coarsely toothed; 



staminate aments 3 in. or more long. . . .Castanea. p 143 

 b Aments usually less than 2 in. long; leaves not com- 

 pletely as in a Satix. p 140 



