KEY. 145 



101 • Pod 2-beaked. Calyx adherent to the base of the 



ovary, or perfectly free from it 192 



Pod not beaked .193 



193. Calyx deeply parted. Petals entire. Pod open- 

 ing between the beaks. Root-leaves clustered, those of the 

 stem chiefly alternate. Flowers greenish-white, yellow, or 

 purple, solitary, corymbed, or panicled. Saxifraga (319). 

 Calyx bell-shaped, 5-cleft. Petals pectinately pin- 

 natifid, slender. Stamens rarely 5. Leaves cordate, or 

 orbicular-reniform, mostly radical ; those of the stem oppo- 

 site, if any, sometimes lobed. Flowers small, white, in a 

 slender raceme or spike. Pod 1 -celled, 2-valved at the sum- 

 mit. Mitella (317). 



193. Leaves all radical, heart-shaped, sharply lobed and 

 toothed, sparsedly hairy above, downy underneath. Scape 

 naked, 5-12 inches high. Raceme simple. Petals clawed, 

 white. Pod membranaceous, 1-celled, 2-valved, one valve 

 much larger. Tiarella cordifolia, L. 



Leaves none of them radical. Ovary stalked. .194 



194. Scaly bractlets at the base of the cylindrical calyx. 

 Petals crenate, rose-color, with white dots. Leaves linear, 

 hairy. Flowers in dense clusters of 3 or more. 



Dianthus Armeria, L. 

 Calyx naked 195 



195. Petals with 2 teeth at the top of the claw. Calyx 

 cylindrical, about one inch long. Leaves oval-lanceolate. 

 Flowers large, rose-color, in corymbed clusters. 



Saponaria officinalis, L. 



Petals without teeth. Calyx ovoid-pyramidal, 5- 

 angled, 5-toothed, and in fruit winged. Leaves ovate- 

 lanceolate. Flowers pale red in corymbed cymes. 



Vaccaria vulgaris, Host. 

 ^Scq^onai'ia vulgaris, Medik). 



196. The 3 styles 2-cleft 538 



Styles not cleft. Leaves entire. Herbs 197 



197. Calyx tubular, swelling, sometimes much inflated, 

 5-toothed. Styles habitually 3 (rarely 4). Stamens 10. Pe- 

 tals long-clawed, often with a scale at the base of the blade, 



