308 The Scottish Naturalist. 



forms of Lecanora glaucocarpa ; but in accordance with the more 

 modern systems of classification, this would be quite anomalous. 

 On the other hand, the genus Endocarpiscum, now incorporated 

 with Heppia, can scarcely, without severe straining, be extended to 

 embrace the plant. 



The following is its diagnosis : 



Thallus nullus visibilis nisi aspectum apotheciorum inferiorem ob- 

 tegens, et gonimia mediocria phseroidea vel ellipsoidea includens. 

 Apothecia in eadem foveola saxi solitaria vel interdum 2-3-aggre- 

 gata, nigra, plana, vel humefacta leviter convexa, lecanorina, mar- 

 gine tenui leviter prominulo rugosulo cincta, umbilicato-adfixa vel 

 etiam interdum substipitata, subtus nigra (latit : 1 2.5 mm:); 

 sporae in thecis numerosae (100-200), incolores, oblongo-cylindra- 

 ceae, saepissime medio quasi constrictse, simplices, '005 *oo6 mm. 

 long., circiter '0015 mm. lat; paraphyses distinctae crassiusculae 

 (crassit. circ. '0025 mm.) apicibus conglut. fuscescentibus vel 

 rufo-fuscescentibus. Iodo gel. hym. intensive caer. Hypothecium 

 rufo-fuscescens. 



The hypothecium rests on a thick white stratum, or rather 

 tumulus, of a striated texture, which is covered by the thalline 

 structure. 



The following is a continuation of my paper on the Cladoniae : 



Oladonia furcata 



* 01. dispansa. 



Similis var. corymbosce (Ach.), sed apothecius magnis (latit. 1 2.5 

 mm.). 



Prope New Galloway Scotiae a J. M'Andrew lecta. 



Oladonia retipora (Flk.). 



* 01. arcuata. 



Podetia albida vel pallida vel (praesertim subtus) fulvescentia, 

 rigida, conferta, erecta vel procumbentia (alt. circ. 30 mm.), cylin- 

 drica, arcuato-vel sinuoso-divisa et-ramosa, reticulato-terebrata 

 (Kfl. Cfl. vel intensius tincta). 



In Victoria Australian (Falck). The habit is peculiar and alto- 

 gether different from retipora. The divisions of the stems, primary 

 and secondary, are all arcuate, almost semi-circular, and very rigid 

 and brittle, the whole constituting an almost coralloid tuft. 

 Oladonia ciliata. 



Similis CI. sylvaticcevar. syhestri (K , C ), sed fibrillis nume- 



