256 



POPULAR HISTORY OF LICHENS. 



Genus IX. CONIOCABPON, DC. 



Gen. Char. Apothecium.(an ardella) appressed, rotundate-de- 

 formed or elongate, sessile, covered with a subcartilaginous mem- 

 brane, which ultimately breaks up into a fine powder ; perithe- 

 cium none. Thalamium plane, depressed, not bordered, pruinose. 

 Thallus crustaceous. (Name from kqvvz, dust, and Kapwos, fruit ; 

 the pulverulescence of the apothecia being the only respect in 

 which it differs from the preceding genus.) 



1. Coniocarpon cinnabarinum (cinnabaris, vermilion). 

 Thallus filmy, thin, greyish, determinate ; ardellae clustered, 

 shapeless, solid. Thalamium lurid and pruinose, or pow- 

 dery, and of a bright vermilion colour. Spores obovate- 

 clavate, rounded at ends, four-septate, upper cell largest, 

 pale red. (E. B. 981, 2151.) 



Somewhat common on the smooth bark of various trees, 

 as the oak, ash, and hazel. 



Nat. Ord. X. CALICIACEj®. 



Fam. Char. Thallus crustaceous, normally sending upwards 

 vertical solid stalks. Apothecium capitate, floccose-pulverulent, 

 either seated on a carbonaceous, turbinate, proper exciple or fixed 

 directly on extremity of stalk. 



