EPHEBEIA.J MAGMOPSEI. 29 



1. E. Mspidnla Nyl. Flora, 1877, p. 321. Thallus decumbent, 

 very much branched, rugulose, opaque, spinulose or verruculose 

 towards the apices, olive-green or dark-brown. Apothecia ex- 

 ternally subgloboso-tuberculose, pale, the epithecium impressed ; 

 spores oblongo-ellipsoid, 0,010-0,015 mm. long, 0,004-5 mm. 

 thick. Cromb. Grevillea, xii. p. 89; Journ. Bot. 1885, p. 195. Cor- 

 nic>'1tiria hispidula Ach. Lich. Univ. (1810) p. 617. Cot-nicularia 

 p>il-*-?iis /3. hispidula Gray, Nat. Arr. i. p. 406. To this belongs 

 also EpJiebe spinulosa Fr. ftl.Jide Nyl. 1. c. 



The thallus is somewhat stellately expanded, with the branches verti- 

 cillately proliferous. From Ephebe pubescem it differs in being hispid and 

 monoecious, as also in the structure of the apothecia. Of the few British 

 specimens seen, only one is sparingly fertile. 



Hah. On damp quartzose and schistose rocks in subalpine districts. 

 Di*tr. Apparently local and scarce, being known only from N. Wales, and 

 the S. and Central Grampians, Scotland. B. M. : Cader Idris, Merioneth- 

 shire ; Snowdon, Carnarvonshire. Ben Lawers and Craig Tulloch, Perth- 

 shire. 



Subsp. E. Martindalei Cromb. ex Nyl. Flora, 1883, p. 104. 

 Thallus scarcely spinulose : apothecia with the receptacle smarag- 

 dine above (or somewhat bluish in thin section) ; spores 0,009 

 14 mm. long, 0,004-6 mm. thick. Cromb. Grevillea, xii. p. 89 ; 

 Journ. Bot. 1885, p. 195. 



This differs from the type, of which, as suggested by Ny lander (I. c.), it 

 is almost a variety, in the nearly smooth thallus and the colour of the 

 receptacle. From Ephebe pubescetis it could consequently with difficulty 

 be distinguished in a sterile condition. 



Hub. On moist rocks in mountainous districts. Distr. Very local and 

 scarce, having been gathered only in N.W. England. B. M. : Mardale, 

 Westmoreland. 



Tribe IV. MAGMOPSEI Nyl. Flora, 1875, p. 103. 



Thallus pyrenopsidian, consisting of syngonimia ; gonimia mo- 

 derate, without order. Apothecia forming a peridium ; spores 

 8nae, oviform, in oblong thecae. Spermogones not seen rightly 

 developed. 



This is a somewhat peculiar tribe, distinguished from all others in this 

 family by the apothecia (if not parasitic, as Nylander is now rather 

 inclined to think) constituting peridia that is, a closed pyreniuni without 

 any true ostiole. It consequently holds an analogous relation among 

 the Ephebacei to Peridiei among the Lichenacei. From the Phylliscodei 

 it differs in the characters of the apothecia and the gonimia. 



7. MAGMOPSIS Nyl. Flora, 1875, p. 103. Thallus indeter- 

 minate ; syngonimia glomerulose or granuloso-difform, greenish- 

 yellow, gonimia pale-glaucous or concolorous with the rest of the 

 thallus. Apothecia small, the peridium (under the microscope) 



