166 NEW LICHENS. 
gineo-membranaceous, the laciniæ flexuose, imbricated, 
the margins crenate with flat roundish buds, which at first 
appear as specks of wbitish powder; beneath are branched 
black tricæ. Upper surface brownish-grey. Disc of the 
apothecia dark reddish-brown. Strongly allied to P. spe- 
. ciosa, Ach., differing by the darker colour, the more uneven 
edges of the laciniæ of the thallus, and by the flattish buds 
which reappear on the margins of the apothecia, giving 
them a crowned appearance. 
14. P. divaricata, Tayl.; thallo laxe implexo, dichotomo, 
lineari-laciniato, suberecto, laciniis divaricatis, convexis, - 
albescentibus, subtus canaliculatis, nigris, tricis atris, sub- 
simplicibus, rigidis, gemmis subnullis ; apotheciis subpedi- 
cellatis, subterminalibus, disco concavo, margine, subin- 
tegro. ' : 
Has. Nepal; Wallich.—About two inches long; the more 
. aged parts of the thallus ofa tawney hue. Apothecia in 
all stages very concave, sessile on corrugated pedicels ; their 
dise chestnut-coloured, their margins at length ruptured. 
. From Borrera leucomela, Ach., the present differs by the 
fewer and more simple tricæ ; by the more convex laciniæ, 
whose margins, as well as those of the poteries are 
entire. 
14. P. echinata, Tayl.; thallo aggregato, ramoso, adscen- 
dente, tenui, oblongo, concavo, albissime pruinoso, subin- 
coc subtus. virescenti,. ricis albidis. echinato ; ge 
