Silene Caryophyllaceae 445 



Calyx strongly inflated in fruit, more or less constricted at the mouth; plants glab- 

 rous throughout; leaves mostly lanceolate, generally 1-2 cm wide. 



Bracts of the inflorescence leaflike; flowers few; plants not glaucous 2. S. nivea. 



Bracts of the inflorescence much reduced; flowers numerous; plants glaucous 



3. S. Cucubalus. 



Calyx not inflated or constricted at the mouth. 



Plants glabrous throughout (sometimes the throat of the calyx pubescent) and 

 usually glaucous. 

 Leaves less than 1 cm wide, narrowly lanceolate. (See excluded species no. 228, 



p. 1046.) S. chlorantha. 



Leaves more than 1 cm wide. 



Calyx club-shaped; capsule cylindrical. (See excluded species no. 221, p. 1046.) 



S. Armeria. 



Calyx not club-shaped; capsule ovoid 4. S. Cserei. 



Plants viscid-pubescent, pubescent or puberulent only on the lower internodes 

 with a glutinous, colored band on the upper ones. 



Flowers in racemes; pedicels mostly less than 5 mm long; annuals 



5. S. dichotoma. 



Flowers not in racemes; pedicels mostly more than 5 mm long; annuals or 



perennials. 



Whole plant not pubescent, the lowest internodes puberulent or scabrous, the 



upper ones glabrous with a dark, glutinous band; upper leaves linear, the 



lower ones lanceolate, linear-lanceolate or spatulate; corolla inconspicuous 



or lacking; capsules 5-8 mm long; annuals. 



Leaves firm, erect or ascending; inflorescence stiffly ascending; capsules 



mostly 6-8 mm long 6. S. antirrhina. 



Leaves thin, lax, spreading or some reflexed; inflorescence divaricate, the 

 pedicels more filiform than in the preceding; capsules mostly 5-6 mm 



l on g 6a. S. antirrhina var. divaricata. 



Whole plant pubescent; corolla usually very conspicuous; capsules about 1-2 

 cm long. 

 Calyx lobes mostly 5-8 mm long, linear-lanceolate; calyx in fruit ovoid or 



elliptical ; flowers white ; night-flowering annuals 7. S. nocti flora. 



Calyx lobes mostly 2-4 mm long, ovate or triangular, acute or obtuse at the 

 apex; calyx in fruit obovate; flowers red or pink, day-flowering; per- 

 ennials. 

 Plants generally 1-2.5 dm high; inflorescence a terminal cyme; calyx in 

 flower generally less than 4 mm wide at the middle (in pressed speci- 

 mens). (See excluded species no. 222, p. 1046.) S. caroliniana. 



Plants generally more than 2.5 dm high; inflorescence cymose-paniculate 

 or paniculate; calyx in flower generally more than 4 mm wide at the 

 middle (in pressed specimens). 

 Leaves ovate, mostly clasping at the base, generally 10-20 pairs; plants 



erect, usually 8-12 dm high 8. S. regia. 



Leaves spatulate or oblanceolate, the lower usually petiolate, the upper 

 clasping, generally 2-4 pairs; plants ascending, generally 4-8 dm 

 l on g 9. S. virginica. 



1. Silene stellata (L.) Ait. f. (Silene stelMa in part, of Gray, Man., 

 ed. 7 and Britton and Brown, Illus. Flora, ed. 2.) Starry Catchfly. Map 

 914. The glabrous form of the species is the southern form and is repre- 

 sented in Indiana by a few specimens from the southern counties. In Sulli- 

 van County I found the species and the variety growing together. The 

 species, like the variety, grows in dry woodland and is rarely found in 



