STUDIES IN THE COMrOSIT^E. 2Ji7 



Jourii. Bosi Soc- v. 140 (18-44). Interior of midJle Cali- 

 fornia. 



13. B. JoNESiL Layia Jonesii, Gray, Proc. Am. Acad. 

 xix. 18 (1883). In San Luis Obispo Co., California. 



14, B. NUTANS. Ccdlichroa iiiiians, Greene, Pitt, ii, 227 



(1892). Mountains of Sonoma Co. 



15- B. CHRYSANTHEMOIDES. Oxijuva cJirymnihcmnidrs, 

 DC, Prodr. v. 693 (183G), not of Bot. Keg. t, 1850. Middle 

 California toward the sea. 



16. B. DouGLASii. Oxjjura chrysanfhemoides^'Lu^dl. Bot 

 Reg. t. 1850 (1S3G), not DC. CalUylossa Douglasu, Hook. 

 & Arn. 356 (1841). Same range as tLe last 



PTILONELLA. 



Nuttall, Trans. Am. Phil. Soc. n. ser. yii. 385 (1841); spe- 

 cies associated with Blephavipappus, Hook. Fl. Bor.-Am. i. 

 316 (1833). 



m 



1. p. SCABRA, Nutt. I. c. Blepharipajypns scahcr, Hook. 

 1. c. Common in Oregon and northern California, and run- 

 ning into two or three varieties or subspecies. 



EEEMIMLA. 



Dimeresia, Gray, Proc. Am. Acad. xxi. 411, and Syn. Fl. 

 Suppl. 448 (1886), not of LabiUardiere (1824). The deriva- 

 tive elements of Dr. Gray's Dimcresia had been brought into 

 requisition repeatedly before, as the names DimcHa (E. Br.), 

 Dimesia {-Rat), HJ^d Dim eiia (Wight & Amott) attest; but 

 Dimercsa (Labill.) is to all intents and purposes of nomen- 

 clature the same as Dimeresia; and, while Bentham and 

 Hooker suppressed the older genus, it was sustained by 



