KEY FOR MARCH, APRIL AND MAY 



45 a Flowers about i in. long, white, not fragrant 



Chionanthus. p 7pp 

 b Flowers % in. or less long, lilac or white, usually 



fragrant Syringa. p 7pp 



46 a Flowers more or less irregular Lonicera. p 215 



b Flowers regular 47 



47 a Flowers % in. or more long, yellow or rose-colored 



Diervilla. p 216 

 b Flowers % in. or less long, white, rarely yellow.... 48 



48 a Leaves with toothed or lobed margins; petals usually 5 



Viburnum, p 214. 

 b Leaves wanting or with entire margins: petals usually 4 



Cornus. p 193 



Woody Vines With Alternate Leaves 



49 a Climbing woody vines 50 



b Erect or prostrate trees or shrubs 58 



50 a Vines with tendrils or aerial rootlets 51 



b Vines not with tendrils or aerial rootlets 55 



51 a Vines with prickles; leaves entire Smilax. p 136 



b Vines not with prickles ; leaves not entire 52 



52 a Vines with tendrils 53 



b Vines with aerial rootlets 54 



53 a Tendrils tapering at the tips Vitis. p 184 



b Tendrils with adhesive expansions at the tips 



Parthenocissus. p 184. 



54 a Leaves simple, usually evergreen with lighter veins 



Hedera. p 191 



b Leaves 3-foliolate, not evergreen .... Rhus radicans. p 181 



55 a Leaves simple, thorns often present Lycium. p 209 



b Leaves compound 56 



56 a Flowers irregular Wistaria, p 173 



b Flowers regular 57 



57 a Thorns or prickles present Rosa, p 166 



b Thorns or prickles not present Akebia. p 154 



Shrubs or Trees With Alternate, Compound Leaves 



58 a Leaves compound 59 



b Leaves simple or wanting at flowering time 78 



59 a Trees usually with thorns on the trunk i in. or more 



long; branchlets zigzag; flowers greenish . Gleditsia. p 170 

 b Trees or shrubs not completely as in a 60 



60 a Flowers irregular, not greenish 61 



b Flowers not completely as in a 65 



61 a Flowers yellow 62 



b Flowers not yellow 63 



6 



