50 KEYS TO THE GENERA. 



E. Leaves with 2 equal lobes. (Found outdoors only South.) 

 Bauhinia (p. 128). 



B. Leaves irregularly 2-3-lobed (sometimes without lobes). Sfis- 

 safras (p. 296). 

 A. Leaves feather-veined. (F.) 



F. Some leaves without lobes, all with tapering bases. BAccharis 

 (p. 241). 



P. Leavesfern-like with many side notches, aromatic. Comptbnia 



(p. 311). 

 F. Leaves silver-gray, finely divided, aromatic. Santolina (p. 243). 

 F. Leaves triangular, with 5-9 notched lobes. Stephanindra 



(p. 163). 

 F. Other thornless shrubs with lobed leaves. Qu^rous (p. 314). 



Primus (p. 142). Spiraea (p. 146). B6tula (p. 311). 

 * Plants with more or less thorns or prickles ; fruit fleshy berries 

 (Ilex has spiny-edged leaves). CratEegus (p. 173). Ribes (p. 201) . 

 ECibus (p. 164) . Ilex (p. 86). 



Key 8. Leaves alternate, compound. 



* Leaves of 3 blades. (A.) 



A. Plants thorny or prickly. (B.) 

 B. Fruit large, orange-like. Citrus (p. 86). 

 B. Fruit pea-like pods. Cytisus (p. 113). 

 B. Fruit blackberry-like. Rubus (p. 104). 

 B. Fruit 2-5-seeded black rounded berry. Aoanthop^nax (p. 212). 



B. Other prickly plants with 3-bladed leaves. R6sa (p. 166) . 

 A. Plants without thorns or prickles. (C). 



C. Flowers pea-shaped. Laburnum (p. 116). Lespedfeza (p. 124). 

 C. Flowers not pea-shaped, small. (D.) 



D. Fruit dry but somewhat berry-like in appearance ; leaves 



aromatic. Rhus (p. 107). 

 D. Fruit flat, wafer-like, I inch or more broad. Ptfelea (p. 84). 



* Leaves with an even number of blades, abruptly pinnate. (E.) 



E. Flowers yellow or yellowish. Cassia (p. 128). Carag^na (p. 122). 



E. Flowers rosy. Halimod^ndron (p. 122). 



* Leaves of 5 or 7 blades growing from nearly the same point, pal- 



mately compound. (F.) 



F. Blade.s entire ; flower.s yellow, in summer. Potentdla (p. 164). 

 F. Blades somewhat notched ; plantthorny. AcanthopJinax (p.2r2). 



F. Blades irregularly cut. Zanthorhiza (p. 58). 



* Leaves once odd-pinnate, blades an odd number. (O.) 



G. Plants thorny or prickly. (H.) 



