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POPULAR HISTORY OF LICHENS. 



* Minor forms ; stipes somewhat simple ; thallus 

 persistent, 



1. Stereocaulon quisquiliare (guisqnilia, the smallest 

 twigs of shrubs). Thallus csespitose, floccose-pulverulent, 

 pale seruginose ; stipes flaccid, slender, granulate-pulverulent 

 above, denudate below, simple or divided. Apothecia lateral, 

 crowded. 



A very minute, delicate form, growing on the ground and 

 on damp shady rocks in the vicinity of waterfalls. Near 

 Perth it occurs in the Den of Balthayock and in various 

 other glens or ravines among the Sidlaw Hills. It is more 

 familiar under its old name, S. nanum. 



Major forms ; thallus sufyevanescent ; stipes very 

 ramose. 



2. Stereocaulon paschale. Stipes csespitose, somewhat 

 strong, compressed and smooth, covered with granulate and 

 crenate, conglomerate squamules. Apothecia mostly termi- 

 nal, flat, often aggregated. 



A very common saxicolous species in highland districts, 

 growing usually in large, dense tufts. It is widely distri- 

 buted over the world, occurring in the Arctic and Antarctic 

 regions, on the Himalayas, in South America, and other 

 foreign countries. It has been observed to be the first plant 



