OF ARTS AND SCIENCES. 341 



SiLENE CAMPAKULATA. Glanclular-puberuleiit ; stems clustered, 

 from a thick rootstock, erect, G-10 inches high, simple or dichotomously 



* * » Calyx oblong-cylindric or clavate, expanded by the enlarging capsule. 

 a. Low and spreading or decumbent ; inflorescence leafy ; flowers white. 



6. S. Menziesii, Hook. Flowers very small, petals bifid, witliout corona. — 

 Eocky Mountains to the Pacific. 



7. S. Wrightii, Gray. Flowers large, subsolitary ; petals 4-cleft. — New 

 Mexico. 



8. S. HooKERi, Nutt.. (5. Bolanderi, Gray.) Flowers very large; petals 

 4-parted. — CaUfornia. 



b. Erect ; panicle naked, usually spreading ; petals 4-parted or -cleft. 



9. S. LACiNiATA, Cav. Flowers very large, bright scarlet; petals deeply 

 4-cleft, the lateral lobes spreading and shorter; leaves narrowly lanceolate. — 

 Southern California and Mexico. 



Var. Greggh. {S. Greggii, Gray.) Leaves oblong-lanceolate to ovate. — 

 Kew Mexico. 



Var. Californica, Gray. [S. Califomica, Dur.) Stem lax, often low and 

 leafy throughout ; leaves oblong-lanceolate to ovate ; lobes of the petals some- 

 times cleft. — California. 



10. S. Lemmoni. Slender, subglabrous ; calyx short, with acute teeth ; petals 

 equally 4-parted; capsule nearly sessile. — Northern Sierras. See p. 342. 



11. S. occiDENTALis. Stout and tall, glandular; calyx long, with obtuse 

 teeth ; petals deeply 4-cleft, the villous claw not auricled ; capsule long-stipitate 

 — Northern Sierras. See p. 343. 



12. S. Oregana. Glandular; petals 2-parted, with filiform bifid lobes; claw 

 very narrow, the auricles produced upwards; capsule long-stipitate. — Oregon. 

 See p. 343. 



13. S. MONTANA. Slender, puberulent, the panicle narrower ; petals equally 

 4-cleft, the corona and auricles lacerate; capsule long-stipitate. — Northern 

 Sierras. See p. 343. 



14. S. TnuRUERi. Tall, erect, glandular-pubescent ; inflorescence elongated ; 



flowers small; petals narrow, inconspicuous, the short limb cleft to the middle, 



with smaller lateral lobes, the auricles produced upwards. — New Mexico. See 



p. 343. 



c. Inflorescence similar ; petals bifid. 



15. S. PECTiNATA. Stout and tall, glandular ; calyx-teeth long and lanceo- 

 late ; claw narrow and not auricled. — Northern Sierras. See p. 344. 



16. S. iNCOMi^TA, Gray. Tall, lax, puberulent ; leaves broadly lanceolate ; 

 calyx-teeth oblong, acute ; lobes of the petals often toothed. — Yosemite Valley. 



17. S. VERECUNDA. Low, crcct, glandular above ; leaves narrow ; calyx-teeth 

 ovate; claw broad. — Near San Francisco. See p. 344. 



d. Flowers usually few, in a naked narrow subracemose panicle ; petals bifid, 

 with entire lobes ; leaves linear-lanceolate. 



18. S. DouGLASii, Hook. Petals pink, with auricled claws and broad obtuse 

 lobes. — From the Wahsatch to the Sierra Nevada and northward. 



