332 Herre 



sterile. It occurs very sparingly on the sandstone cliffs above 

 the sea at Sutro Heights, San Francisco. 

 ParmcUa cc nick is Ach. Meth. Lich. 260. 1803. 

 Borrera ccrtichis Ach. Lich. Univ. 504. 1810. 

 Ramalina ccrtichis DeNot. Giorn. Bot. Ital. i : 45. 1846. 



2. RAMALINA CERUCHIS CEPHALOTA Tuckerman. 



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. It occurs all along 

 the Pacific coast within our territory, growing on dead or dying 

 twigs and branches of maritime trees and shrubs, and on old 

 fences. It was first collected at Santa Cruz, by Dr. C. L. 

 Anderson, who supplied Tuckerman with his specimens. 



I have collected specimens at Point San Pedro and at Pacific 

 Grove on trees and shrubs, and along the coast near Pigeon 

 Point on old fences. 

 Ramalina ccruchis f. ce^halota Tuck. Syn. N. Am. Lich. i : 



21. 1882. 



3. RAMALINA COMBEOIDES Nylander. 



Thallus tufted, short, stout, terete ; color a pale glaucous 

 green ; no part of the thallus black ; apothecia abundant, ter- 

 minal ; concolorous, or slightly yellowish. 



Habitat, maritime rocks. 



This species is placed with Ramalina ccruchis by Tucker- 

 man, but there seems to be no difficulty in separating the two 

 forms in the field. They differ constantly in color, appearance 

 of thallus, size, and in the apothecia. The short c^'lindrical 

 thallus, capped by the disk-shaped apothecia, together with the 

 sage-green color and absence of black, distinguish it from all 

 related forms. 



This species is very abundant about Point San Pedro, on 

 rocks 200 or 300 feet above the Pacific Ocean. 

 Ramalina combcoidcs Nyl. Bull. Soc. Linn. Norm. 11. 4: 107. 



1870. 



4. RAMALINA HOMALEA Acharius. 



Thallus tufted, compressed, two-edged, smooth or becoming 

 wrinkled ; lobes spreading, simple or irregularly branched : 



