ROSACEAE (ROSE FAMILY) 



19 ULMARIA. 



i a Flowers ^4 in. or less broad 



QUEEN-OF-THE-MEADOW. (U. ulmaria*) 

 b Flowers %-i in. broad. .MEADOW SWEET. (U. filipendula*) 



20 AGRIM6NIA. 



1 a Leaves velvety beneath, not with scattered hairs; stems 



with fine hairs SOFT AGRIMONY. (A. mollis.) 



b Leaves with few scattered hairs beneath ; stems covered 



with coarse hairs 2 



2 a Main leaflets 9-11, with glandular hairs; stems with 



brown hairs. MANY-FLOWERED AGRIMONY. (A. parviflbra.) 

 b Main leaflets 5-7, not with glandular hairs 3 



3 a Fruit top-shaped with bristles numerous and spreading 



HAIRY AGRIMONY. (A. hirsuta.) 

 b Fruit hemispheric with bristles few, erect or ascending 



WOODLAND AGRIMONY. (A. striata.) 



21 SANGUIS6RBA. 



i a Flowers greenish, in globose heads 



GARDEN BURNET. (S. sanguisorba*) 

 b Flowers white, in spikes 



CANADIAN BURNET. (S. canadensis.) 



22 R6SA. 



1 a Shrubs not cultivated for their flowers 2 



b Shrubs cultivated for their flowers 7 



2 a Outer calyx lobes pinnately divided 3 



b Outer calyx lobes more or less entire, not pinnately 



divided 4 



3 a Leaflets more or less covered with glandular hairs and 



resin dots beneath SWEETBRIER. (R. rubiginbsa.) 



b Leaflets not covered with glandular hairs and resin 



dots beneath DOG ROSE. (R. camna*) 



4 a Stalks of flowers not hairy; shrub with few or no 



prickles MEADOW ROSE. (R. bldnda.) 



b Stalks of flowers hairy or bristly; shrubs armed with 



prickles 5 



5 a Leaflets finely toothed ; shrub growing in low, damp 



places SWAMP ROSE. (R. Carolina.) 



b Leaflets coarsely toothed ; shrubs growing in dry, rocky 



places 6 



6 a Leaflets 7-9, usually 7, often shining above ; spines com- 



paratively stout GLOSSY ROSE. (R. lucida.) 



b Leaflets 5-7, usually 5, not usually shining above; spines 



comparatively slender PASTURE ROSE. (R. humilis.) 



7 a Leaflets %-% in. long, usually 9, ovate to rounded 



SCOTCH ROSE. (R. spinosissima*) 

 b Leaflets not completely as in a 8 



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