CARYOPHYLLA CEAE 



311 



Calyx not bracteolate at the base. 4. Gypsophila. 



Calyx bracteolate at the base. 5. Petrorhagia. 

 Calyx not at all scarious. 



Petals appendaged at the base of the blade. 6. Saponaria. 

 Petals not appendaged at the base of the blade. 



Calyx strongly 5-angled, not bracteolate. 7. Vaccaria. 



Calyx terete or nearly so, subtended by bractlets. 8. Dianthus. 



i. Agrostemma L. 

 1. A. Githago L. In grain fields and waste places: throughout 

 E. N. Am. Adventive from Eu. Also in Asia. 

 Throughout the range, nowhere common. 



2. Silene L. 



Leaves or some of them verticellate in 4's. I. 5. stellala. 



Leaves all opposite. 



Calyx much inflated and bladdery. 2. 5. latifolia. 



Calyx merely expanded by the ripening pod. 

 Flowers cymose or paniculate. 



Day-blooming; flowers rarely white, mostly red or pink. 

 Perennials, more or less sticky pubescent. 



Petals 2-cleft or 4-cleft. 3. 5. nutans. 



Petals emarginate or eroded. 4. 5. caroliniana. 



Annuals, glutinous at or below the nodes. 



Calyx ovoid; flowers small, panicled. 5. 5. antirrhina. 



Calyx club-shaped; flowers large, cymose. 6. S. Armeria. 



Night-blooming; flowers large, white. 7. 5. noctiflora. 



Flowers spicate or racemose. 



Spike-like raceme simple; flowers small. 8. S. Anglica. 



Raceme forked; flowers 12-16 mm. broad. 9. 5. dichotoma. 



1. S. stellata (L.) Ait. In woods: Mass. to Minn., Ga., Neb. 



and Ark. 



Common throughout the range except in the pine-barrens of 

 L. I. and N. J., there rare or wanting. 



2. S. latifolia (Mill.) Britten & Rendle (S. vulgaris (Moench) 



Garcke). In meadows and waste places: N. B. to Ont., 

 N. J. and 111. Naturalized from Europe. 



Not very common along roadsides in most parts of the range; 

 unknown in the pine-barrens. 



S. nutans L. Waste grounds: Me. and N. Y. Native of 

 Europe. 



Known in our area only from Arrochar, S. I. Not" recently 

 collected. 



,v 



