68 HERRE 



tips clear or slightly darkened; bluish with I; asci subcylindrical or 



12? — 22 



clavate, usually with a halo, at least at the upper end, r ,«; 



spores ellipsoid-spindle shaped, or slipper-shaped, blunt, straight, 



4 — locular, the third cell usually the largest, surrounded by a; 



6-9f-ii ''6-7" 



broad gelatinous halo, -— /^; — //, Stirton. Sper- 



20 — 28 20—28 



mogonia numerous, forming minute black specks over the thallus 



1 _ i 



"5 — 2 



spermatia straight, very slender, — P- 



42 — 73 



On twigs and trunks of Alnus, Gazos Creek, alt. 75 feet, and on 

 dead twigs of Lupinus arbor eus at Pescadero Point, 10 to 25 feet 

 alt. ; on Quercus agrifolia at Laguna Creek, and on bark of Pseudo- 

 tsuga taxijolia at Santa Cruz. Dr. Hasse has also collected it on Jug- 

 lans in the Santa Monica Range near Los Angeles. 



The reference of our material to Stirton's plant may be incorrect, 

 but it agrees with no other described in the accessible literature. 



Specimens in the Anderson Herbarium at Santa Cruz, marked 

 Opegrapha varia seem to be this same species. 



XIV. Phaeographis Miill. Arg. 



Phceographis Miill. Arg. Mem. Soc. Phys. et Hist. Nat. Geneve, 

 29: 1887. 



Thallus uniform crustaceous, with Trentet>ohlia alga. Apothecia 

 innate, appressed, or sessile, usually linear, simple or branched; disk 

 usually narrow, fissure-like; proper margin and hypothecium black 

 to colorless; hymenium gelatinizing, not turning blue with I; spores 

 dark, spindle-shaped or caterpillar-like, bi-locular to many-celled. 



About ICO species, mostly on bark in the warmer parts of the 

 earth, represented with us by but one species. 



I. PH^OGRAPHIS INUSTA (Ach.) Mull. Arg. 



Graphis inusla Ach. Syn. Meth. Lich. 85. 1814; Canada. 

 Graphis imista Leighton, Lich. Flora Grt. Brit. cd. 3, 431. 1879. 



Thallus determinate, thin, uniform, smooth or slightly wrinkled, 

 yellowish white to white; with KOH yellowish brown. 



