GERANIACEAE (GERANIUM FAMILY) 



3 a Leaflets less than i in. long, rounded; pods i-3-jointed, 



joints oval 



SMALL-LEAVED TICK-TREFOIL. (M. maryldndica.) 

 b Leaflets more than i in. long; pods 2-6-jointed 4 



4 a Plant rather densely hairy; leaflets ovate; joints of pods 



not easily separating 



HOARY TICK-TREFOIL. (M. canescens.) 

 b Plants not hairy or only slightly so; joints of pods easily 



separating 5 



5 a Leaflets velvety beneath, broadly ovate; joints of pods 



half-rounded 



VELVET-LEAVED TICK-TREFOIL. (M. viridiflbra.) 

 b Leaflets not velvety beneath, sometimes hairy ; joints of 



pods more or less triangular -6 



6 a Plants more or less hairy; leaflets hairy beneath 7 



b Plants not noticeably hairy excepting the pods 8 



7 a Leaflets oblong-ovate; flowers about }4 in. long; ra- 



cemes loosely-flowered 



DILLEN'S TICK-TREFOIL. (M. dillenii.) 



b Leaflets oblong-lanceolate; flowers about % in. long, 

 showy; racemes densely-flowered 



CANADIAN TICK-TREFOIL. (M. canadensis.) 



8 a Leaflets oblong-lanceolate; pods 2-6-jointed; flowers 



about % in. long.PANiCLED TICK-TREFOIL. (M. paniculata.) 

 b Leaflets ovate to oblong, pale beneath ; pods 3-4-jointed ; 

 flowers about V>2 in. long 



SMOOTH TICK-TREFOIL. (M. laevigata.) 



35 GLYC1NE SOY BEAN. (G. hispida*) 



16 GERANIALES. Geranium Order. 



i GERANIACEAE. Geranium Family. 

 i GERANIUM. 



1 a Flowers i in. or more broad 



WILD CRANE'S-BILL. (G. maculatum.) 

 b Flowers % in. or less broad 2 



2 a Flowers pale-pink to white, in compact clusters 



CAROLINA CRANE'S-BILL. (G. carolinianum.) 

 b Flowers purplish or pink, not in compact clusters 3 



3 a Flowers about V< in. broad ; beak of capsule about i 



in. long HERB ROBERT. (G. robertianum.) 



b Flowers about V* in. broad; beak of capsule about % 



in. long. . .SMALL-FLOWERED CRANE'S-BILL. (G. pusillum.) 

 2 PELARGONIUM, 

 i a Plant usually trailing, with more or less zigzag stem; 



usually not hairy. IVY-LEAVED GERANIUM. (P. peltatum*) 

 b Plants more or less erect 2 



12 177 



