Da-vis : DELPHINIUMS OF NORTH AMERICA. 433 



G. Coats of seeds smooth ; roots fasciculately tuberous. 



15- tricorne. 



GG. Coats of seeds winged or wrinkled, roots not tuber- 

 ous, but in some grumose. 

 H. Roots not grumose. 



I. Sepals shorter than the spur. 



J. Leaves thickish ; racemes long. 



1 6. Andersonii. 



JJ. Leaves not thick ; racemes shorter ; flowers 

 smaller 17. Parishii. 



II. Sepals as long as spur, much surpassing petals. 



18. Parry 7. 



HH. Roots coarsely granular or grumose; carpels 

 always 3, seeds wing-margined. 



I. Pedicels longer than the flowers ; follicles spread- 



ing when mature 19. Menziesii. 



II. Pedicels shorter than flowers; follicles spread- 



ing only at tips 20. pauciflorum. 



EE. Natives of Asia but introduced to American gardens. 

 F. Sepals somewhat persistent ; bractlets opposite, lanceo- 

 late, entire, near the flower 21. Brunonianum. 



FF. Sepals deciduous ; bractlets alternate, linear, or linear- 



lobed, distant from flower 22. Cashmirianum. 



DD. Height more than \y z feet (except in a few cases). 

 E. Seeds wrinkled or scaly, hardly winged (except in 28 and 



29) ; all native of the United States except 23. 

 F. Follicles always 3. 



G. Upper petals violet 23. altissimum. 



GG. Upper petals yellowish, or yellow with blue tips. 

 H. Inflorescence a crowded, erect, pyramidal raceme. 



24. exaltatum. 

 HH. Inflorescence open and somewhat branching; 



pedicels long and slender 25 . Treleasi. 



FF. Follicles commonly varying from 3 to 5 on each plant. 

 G. Stems more or less leafy. 

 H. Sepals and spurs blue. 



I. Stem leafy ; radical leaves few. 



26. Carolinianum. 



II. Stem leaves mostly near the base ; radical leaves 



many. 



J. Root a flattish tuber 27. Oreganum. 



JJ. Root woody-fibrous 28. Geyeri. 



HH. Sepals and spurs chiefly white.. 29. camporum. 

 GG. Stem leafless. 



