NORTH AMERICAN SPECIES OF CEANOTHUS. 113 



a. Procumbent aud radicant: flowers bright blue (ex- 



cept occasional albiuos or hybrids), mostly on 

 long, slender, colored pedicels. 



26. C. PROSTRATUS, Benth. PI. Hartweg, 302; Watson, 

 I. c. 339. — Washington Ter. to California and Nevada. 



b. Erect or spreading, the branches mostly rigid: ped- 



icels usually stouter or rather short. 



* Leaves opposite, 

 -f- Flowers (always?) white. 



27. C. CUNEATUS, Nutt. in Torr. & Gray, Fl. i. 267; Wat- 

 son, I. c. 338 and Index, 164, in part. — Oregon to Lower 

 California. 



28. C. Greggii, Gray, Plant. Wright, ii. 28; Watson, 

 /. c. 338. — Utah, Arizona and New Mexico to Mexico. 



29. 0. CRASSiFOLius, Torr. Pac. R. R. Eep. iv. 75; Wat- 

 son, I. c. 338 and Index, 164, excl. synonym and variety. 

 — Coast range of Southern California, Lower California and 

 Calif ornian islands. 



-i--s- Flowers blue (or rose-purple?). 



30. C, RiGiDus, Nutt. iuTorr. & Gray, Fl. i. 268; Watson, 

 I. c. 339. — Coast region of Southern California. 



VAR. GRANDiFOLius, Torr. Pac. R. R. Rep., iv. 75; Wat- 

 son, Index, 161, under C. crassifolias. G. crasslfolius, 

 var. glahratiLS Gray, Cat. Bolander, 8; AVatson, 

 Index, 164. — Range of the species. 



■^■^ Leaves alternate; flowers white. 



2d Ser. Vol. I. Issued June 15^ 1888. 



