CLADONIA. 



269 



granulate-pulverulent, from greenish becoming greyish ; 

 scyphiferous ones turbinate, commonly proliferous; cylin- 

 drical rare, slender, simple ; thalline squamules thin, elon- 

 gate-lacinulate. 



A very common Lichen, growing on the ground, on the 

 mud of old walls, on rotten wood, and on heaths in lowiand 

 and subalpine districts. Its geographical range is wide, 

 occurring in the Arctic regions, America as far south as 

 the Straits of Magellan, Australia, and other countries ; on 

 Orizabo it was found at an elevation of 14,600 feet. It is 

 the u Cup Moss " of the London herbalist. It contains a 

 considerable amount of gummy or starchy matter, and has 

 been much used as a demulcent in various chest affections, 

 as hooping-cough. Its medicinal uses, which have been 

 most varied, have resembled those of Cetraria Islandica* 



5. Cladonia alcicornis (alces, the elk, and cornu, a 

 horn) is distinguished by its csespitose, subfoliaceous, ma- 

 crophylline thallus, which is elongate-laciniate, subpalmate, 

 prostrate, w T hen dry pale greenish above; lacinute linear; 

 margins, beneath, sometimes subpilose. 



Not very common, and usually sterile. In this and the 



* Dillenius, Dissertatio deLichene Pyxidato, 1785 (in Schlegel's 'Thesau- 

 rus Materia Medicse/ vol. i.) : Willis, Pharmaceuticse rationalis, Part II. 



