142 CARYOPHYLLACEAE. 



Styles fewer than the sepals or if as many 

 opposite them. 182. Stellaria, 146. 



Petals present. 



Petals 2-cleft or parted. 



Capsule cylindric, usually curved. 181. Cerastium, 146. 

 Capsule ovoid or oblong not curved. 182. Stellaria, 146. 

 Petals entire or notched. 



Styles as many as the sepals and 



alternate with them. 183. Sagina, 148. 



Styles fewer than the sepals or if as 

 many opposite them. 

 Disk of the receptacle conspicu- 

 ous, 8-10-lobed. 184. Ammodenia, 148. 

 Disk none. 



Seeds without strophioles. 185. Arenaria, 149. 



Seeds each with a strophiole. 186. Moejjringia, 150. 



175. DIANTHUS. Pink. Carnation. 



Annual or perennial ornamental herbs; flowers solitary or 

 clustered, mostly pink, rose-colored, or white; calyx cylindrical, 

 nerved or striate, 5-toothed, subtended by 2 or more bractlets; 

 stamens 10; styles 2; capsules 1-celled, 4-toothed; seeds flattish 

 on the back. 



Dianthus armeria L. Deptford Pink. Annual, erect, 30-60 cm. high, 

 somewhat pubescent; leaves linear; flowers in clusters of 2—4; bracts subulate, 

 very pubescent; calyx tubular, 15 mm. long, the teeth very acute; petals 

 elliptic, crenate, rose-colored and with small white dots. 



A native of Europe occasionally found in fields; introduced with grass seed. 



176. SILENE. Catchfly. 



Annual or perennial herbs; flowers clustered or solitary, mainly 

 pink, red or white; calyx more or less inflated, tubular, ovoid or 

 campanulate, 5-toothed, 10-many-nerved; petals 5, narrow, 

 clawed, mostly crowned with a scale at the base of the blade; 

 stamens 10; styles 3, rarely 2, 4 or 5, if 5 opposite the calyx- 

 teeth; ovary 1-celled or incompletely 2-4-celled; ovules many; 

 capsule 3 or 6-toothed. 



Calyx with 15 nerves or more. 



Nerves 18-23, prominent; calyx not inflated. S. multinervia. 



Nerves 15-20, obscure; calyx inflated. S. latifolia. 



Calyx with 5-10 nerves. 



Plants annual or biennial. 



Inflorescence a simple raceme. 5. anglica. 



Inflorescence a cyme or panicle. 



Plant sticky-hairy. 5. noctiflora. 



Plant glabrous, except that the middle portion of 

 each of the upper internodes is glutinous. 5. antirrhina. 



Plants perennial. 



Acaulescent and densely matted. 5. acaulis. 



Caulescent. 



Flowers solitary in the forks of leafy branches. 



