GENERA AND SPECIES. 165 



mixture was then smeared over some dead animal 

 placed in a locality frequented by the wolves. It was 

 also used to dye woollen goods a bright yellow. 



This is the most showy and largest lichen found 

 along the Pacific coast, where it usually occurs fertile ; 

 the specimens found in the interior and eastern states 

 are small and always sterile. 



11. Alectoria. 



This genus has only a few representatives. The thal- 

 lus is typically fruticose, long and pendulous. At the 

 joints the thallus is somewhat flattened, otherwise the 

 branches are cylindrical. There is a semblance to 

 Usnea, but the surface is smoother and the apothecia 

 are smaller. The color varies from light to brown 

 and nearly black. Oval soralia are c^ten present. 

 The apothecia are few, sessile, small to medium. Disk 

 flattened or convex. Spores colorless to dark, simple, 

 two to four in each spore-sac, large, with thick outer 

 spore-wall. The spores remain colorless until matur- 

 ity, when the cell-contents become dark. Oil-globules 

 are frequently present in the spores. 



The Alectorias occur in arctic regions and upon 

 high mountains. They grow upon coniferous trees. 



1. Alectoria sarmeyitosa. Thallus long, pendulous, 

 branched ; flattened at joints ; straw color ; surface 

 smooth or bearing oval soralia. Apothecia few, 

 medium, lateral. Disk light color to brown. Spores 

 typical, 32/u, X 17.5/x. 



This plant is usually described as A. ochroleuca var. 

 sarmentosa ; also as C. ornicularia ochroleuca. 



