CARYOPHYLLACEAE. 143 



Flowers small; petals white, bifid. S. menziesii. 



Flowers large; petals pink, 4-parted. S. hookeri. 



Flowers in terminal panicles, or occasionally sol- 

 itary. 

 Calyx cylindric, narrowed at base; inflorescence 



a narrow panicle. S. scouleri. 



Calyx campanulate; inflorescence a few-flow- 

 ered cyme. 

 Plants 5-10 cm. high; flowers 1-3. • 5. suksdorfii. 



Plants taller; flowers often numerous. 



Blades of petals 2-lobed. 5. douglasii. 



Blades of petals 4-lobed, the lateral 



lobes smaller. S. macounn. 



Silene multinervia Wats. Annual, erect, 20-30 cm. high, pubescent and 

 somewhat viscid in the inflorescence; leaves linear to narrowly oblong, acute; 

 flowers irregularly cymose; calyx ovoid but narrowed above, with 18-23 prom- 

 inent nerves; petals small, purple. 



Sparingly introduced from California. 



Silene latifolia (Mill.) Britten & Rendle. Bladder Campion. Perennial, 

 glaucous; stems loosely branched, spreading or ascending, 20-40 cm. high; 

 leaves ovate to lanceolate, acute, the uppermost reduced to bracts; calyx 

 glabrous, much inflated, thin, with 15-20 veins connected by cross veinlets; 

 petals white, 2-cleft. 



Introduced from Europe. 



Silene anglica L. Annual, pubescent and somewhat viscid; stems erect, 

 15-30 cm. high; leaves oblanceolatc, obtuse, mucronate, 2-3.5 cm. long; 

 flowers in a terminal one-sided raceme; calyx hairy, cylindric at first, becoming 

 ovoid in fruit; petals small, pink or white, notched or entire. 



Introduced from Europe. 



Silene noctiflora L. Stems stout, erect, 30-80 cm. high; lower leaves 

 oblanceolatc or spatulate, the upper lanceolate, 5-8 cm. long; flowers white, 

 few and long-peduncled, in a loose cyme; fruiting calyx ovoid, white with 

 green veins, 25 mm. long, the teeth subulate. 



Sparingly introduced from Europe. 



Silene antirrhina L. Annual, glabrous or puberulent; stem slender, mostly 

 simple, the middle of each internode sticky-viscid; leaves linear or lanceolate, 

 acute, 2-6 cm. long, sessile; flowers in a forked compound cyme, long-pedicelled; 

 calyx 10-nerved, ovoid, cylindrical in fruit, 6-10 mm. long; petals white or 

 pinkish, notched, little exceeding the calyx. 



Sandy or gravelly soil, infrequent. 



Silene acaulis L. Moss Campion. Perennial, densely tufted and moss- 

 like, 2-5 cm. high; leaves numerous, linear, 8-12 mm. long; flowers solitary, 

 subsessile or short-peduncled; calyx glabrous, bell-shaped, the lobes obtuse; 

 petals red-purple, notched or cleft at the apex, the lateral auricles very small. 



Moist rocky places at high altitudes in the Cascade Mountains. 



Silene menziesii Hook. Perennial, glandular-puberulcnt; stems weak, 

 erect or decumbent, usually branched, 10-30 cm. high, leafy; leaves elliptic- 

 lanceolate, acuminate or acute at each end, 2-6 cm. long; flowers small, solitary 

 in the forks of leafy branches; calyx obconical, 5-6 mm. long, 5-toothed, nerves 

 not prominent; petals white, 2-cleft, 6-8 mm. long, usually without a crown. 



In open woods. 



Silene hookeri Nutt. Leafy perennial with stout root; herbage grayish 

 pubescent; stems 10-20 cm. high; leaves oblanceolatc, acutish, 4-7 cm. long, 



