246 PITTONIA, 



Prodr. v. 694 (1836). Layia, Hook. & Arn. (1841). Plains 



of the interior of California only. 



3. B. GRAVEOLENS. Lciijla graveolens, Greene, Ball. Calif. 

 Acad. i. 92 (1885). Mountains above Mohave Desert, Cali- 

 fornia. 



4. B. CAKNOSUS. Madaroglossa carnosa, Nutt. Trans. Am. 

 Phil. Soc. n. ser. vii. 393 (1841). A maritime species of 

 "western California. 



5. B. ELEGANS. Madaroglossa elegans, Nutt. 1. c. 



6. B. HiERAcioiDES. Mudaroglossa hieracioidcs, DC 

 Prodr. V. 694 (1836). This and the last are common in mid- 

 dle California. 



7. B. GAiLLARDioiDES. Tvidax 9 gaillardioides, Hook. & 

 Arn. Bot. Beech. 148 (1840). Middle California. 



8. B. HisPiDus. Layia hisjnda, Greene, Pittonia, ii. 20 

 (1889). Higher elevations of the Mt. Diablo Range, and 

 above the Mohave Desert. 



* * Callichroa type; pappus of nal-ed brisiJes. 



9. B. PLATYGL088US. CalUchvoa pilaiyglossa, Fisch. & 



Mey. Ind. Sem. Petr. ii. 31 (1835). Abundant tbroughout 

 almost the entire length of California toward the seaboard. 



10. B. PENTACH,ETus. Layia penfacha^fa, Gray, Pac. B. 

 Rep. iv. 108. t. 16 (1857). Foothills of the Sierra Nevada. 



* # * OxYURA ty2w; papp^is paleaceous or none. 



11. B. Oreganus. Layia Douglasii, Hook. & Arn. Bot. 

 Beecli. 358 (1841). Valley of the Columl)ia River, Oregon 



and "Washington. 



12. B. fremoxti. Calliachyris Fremonii, Ton. & Gray, 



