2l6 HERRE 



H. Lobes slender, elongate-branched, chan- 

 nelled beneath 8. canaliculata 



HH. Lobes short, very broad, little divided; 



not channelled beneath 9. fraxinea 



I. RAMALINA CERUCHIS (Ach.) DeNot. 



Parmelia cenichis Ach. Math. Lich. 260. 1803. 

 Ramalina ceruchis De Notaris, Giorn. Bot. Ital. 1: 45. 1846. 

 Ramalina ceruchis Tuck. Syn. N. Am. Lich. I: 21. 1882. 

 Ramalina ceruchis Herre, Proc. Wash. Acad. Sci. 7: 331. 1906. 



Thallus tufted, terete, smooth, becoming wrinkled; sparingly 

 branched, the tips pointed; color yellowish green, basally black or 

 blackening. Our specimens sterile; apothecia lateral when present. 



The long, cylindrical, pointed thallus of this species serves to 

 separate it very markedly from the other Ramalinas. 



I have obtained it but once, and then it was sterile; Acharius says 

 "scutellas rarissime." 



It occurs very sparingly on the sandstone cliffs above the sea at 

 Point Lobos, San Francisco. I have also examined specimens from 

 San Diego, collected by Dr. Farlow, Dr. Cooper, and Miss Middle- 

 combe. 



Originally described from Peru, and probably occurring along the 

 entire coast between Peru and Oregon. 



2. RAMALINA CERUCHIS CEPHALOTA Tuck. 



Ramalina ceruchis f. cephalota Tuck. Syn. N. Am. Lich. I: 21. 1882. 

 Ramalina ceruchis f. cephalota Herre, Proc. Wash. Acad. Sci. 7: 332. 

 1906. 



This subspecies is known at once by the conspicuous, lateral, 

 bluish soredia, which abound on the very slender, short, round, 

 entangled filaments. It is always sterile, and occurs all along the 

 Pacific coast in our territory, growing on dead or dying twigs and 

 branches of maritime trees and shrubs, and on old fences. It 

 extends at least as far south as San Diego, where it was collected by 

 Dr. Farlow. 



1 



