LICHENES — DR. JEAN" MULLER. 359 



laevis, nudus; laciniae undique applanatee, pro minutie latse, ultimo margine crenatae. 

 Apothecia adpresso-sessilia, §-£ mm. lata, margine integro demum tenui cincta, discus 

 margine paullo obscurior. Sporse m ascis octouEe, 12-14 /j. longas, 6-7 //. latae, medio ventri- 

 cosse, utrinque obtuse acutatae. 

 Formam minutulam fere simulat Amphilomatis deplanati, Mull. Arg., sed thallus pallidior, 

 centro areolatus et sporae subsimiles iis Amphilomatis Heppiani, Mull. Arg. 



Socotra. Ad saxa calcarea. B.C.S. n. 1468. 

 Distkib. Endemic. 



3. A. granuliferum, Miill. Arg. in Proc. Koy. Soc. Edin. xi. (1882), 460. 



Orbillse thallinae vix 1 cm. latae, miniato-fulvse, medio late areolato-diffractae v. obsoletae, margine 

 sat regulariter applanato-radiantes v. etiam squamulse irregulariter dispersae; laciniae et 

 praesertim areolarum margines tuberculis graniformibus acute prominentibus sat exiguis 

 concoloribus ornati. Apotbecia ignota. 



Habitu valde ad Amphiloma murorum, Korb. var. miniatum, Korb. et var. dbliteratum, Korb. 

 accedens, sed ob laciuulas omnes semper insigniter adplanatas evidenter A. Balfourii, 

 Miill. Arg. magis affine et tuberculis marginalibus insiguitum est. Laciniae dorso baud 

 raro solutae et turn A. cirrhochroum, Korb. fere simulant. Tballus interdum in iisdem 

 speciminibus non magis evolutus est quam in B. murorum, Korb. var. obliterato, 

 Korb. 



Socotra. Ad saxa quartzosa prope Wadi Kischen, ad pedem septen- 

 trionalem montium Haghier. Schweinf. 

 Distrib. Endemic. 



var. subvitellinum, Miill. Arg. 



Tballus e fulvo vitellinus. Eeliqua visa omnia conveniunt. 



Socotra. Crescit cum forma genuina speciei mixta at minus frequens. 

 Distrib. Endemic. 



Tribe 8. Lecanore^e. 



Zecanorece, Aspiciliece, Urccolarince, Auct. pr. p. 



Thallus undique crustaceus, gonidia globosa, simplicia, herbaceo-viridia ; apothecia lecanorina. 



This tribe includes all truly crustaceous lichens, with lecanorine fruits and 

 green globular gonidia ; this last character excludes Dirina and Thelotrema, 

 considered by other lichenographers as belonging to the Lecanorese. 



