90 CRYPTOG AMIA-LICHENES . 



Lichen prunastri, LIGHTF. Scot. 835. WITH. iv. 57. Eng. Sot. 

 t. 859. Parmelia prunastri, SPRENG. Syst. Veg. iv. 280. DILL. 

 Muse. t. 21. 55. 



Hob. On trees, very common, in pendulous tufts, about 2 

 inches long, and very soft and pliable when moist. 



Has a remarkable property of imbibing and retaining odours, 

 and hence " it is fit to be used in compositions which serve 

 for sweet perfumes, and that take away wearisomnesse, for 

 which things that is best of all which is most sweet of 

 smell." " Of the very moss of the oak, that which is 

 white (E. prunastri) composes the choicest cypress-pow- 

 der, which is esteemed good for the head ; but impostors 

 familiarly vend other mosses under that name, as they do 

 the fungi, (excellent in haemorrhages and fluxes), for the 

 true agaric, to the great scandal of physic." EVELYN. 



49. RAMALINA. 



1. R. fraxinea, plane, wrinkled, irregularly branched and laci- 

 niate; apothecia scattered over the frond. HOOK. Scot. ii. 68. 

 Lichen fraxineus, LIGHTF. Scot. 835. WITH. iv. 61. Eng. Bot. 

 t. 1781. Parmalia fraxinea^ SPRENG. Syst. Veg. iv. 279. DILL. 

 Muse. t. 22. f. 59. 



Hab. On ash trees, frequent. 



Frond pendulous, a span in length, broad, greyish-white. 

 Apothecia buff-orange, numerous and scattered, unequal in 

 size, the smaller cup-shaped, the large ones plane, with an 

 undulate border, arid generally placed on the edges of the 

 frond. 



2. R. scopulorum, compressed, elongate, much branched, branches 

 clichotomous, fastigiate, linear ; apothecia lateral, stalked. HOOK. 

 Scot. ii. 68. Lichen scopulorum, WITH. iv. 62. Eng. Bot. t. 688. 



Var. Csespitose, simple or sparingly branched, compressed, 

 taper-pointed; apothecia lateral, stalked. Lichen siliquosus, 

 WITH. iv. 42. DILL. Muse, t, 17. f. 38. good. 



Hab. On rocks on the sea coast. Var. 1. is abundant on 

 the precipitous rocks below Marshall Meadows : var. 2. 

 on Hudshead. 



The first variety is pendulous, and grows to the length of (J 



