DILLENlUs's ' HISTORIA MUSCOBUM.' 573 



but sterile. B=P. saxatilis, var. sulcata (Tayl.). Fertile. 

 0, D = P. saxatilis f. ruiiFUEACEA, Schcer. The last two have 

 not hitherto been distinguished. Along with D is a fragment of 

 Platysma diffusum (Web.), lignicole. 



On the same sheet as the above is a specimen named Muscus 

 arboreus licbeniformis purpurascens, Ray, Syn. ii. p. 23, n. 8, 

 Parmelia saxatilis, var. sulcata (TayL). Infertile, with the 

 thallus abnormally (through maceration) of a purplish colour. 



Subdivision IV. Leaves closely adnascent, broader. 



P. 96. Lichenoides Endiviae foliis crispis et splendentibus, subtus 

 nigricantibus, p. 192. A= Platysma glaucum (£.). Sterile and 

 sorediate at the margins. B = a smaller state with the lacinise 

 suberect. 



P. 97. Lichenoides caperatum, e rosaceo, expansum e sulphureo 

 virens, p. 193. A = Parhelia caperata (£.). Infertile. B 

 smaller state. C = fertile condition. Var. rufescens,T)ill. p. 195, 



is not in his lib. 



P. 98. LicJienoides lrcte virens, scutellis fulvis, p. 195. A 

 Eicasolia ljetevirens (LgJitf.). Typical and fertile. B = an 

 old state with young apothecia. 



Tab. XXVI., Dill. Hist. Muse. 



P. 99. Lichenoides cumatile, foliis tenacibus, eleganter lacinia- 

 tis, p. 197,= Eicasolia glomulifera {Lghtf.). Fertile, and 



with the parasitic Homodium holacinum (Schser.). 



P. 100. Lichenoides fuliginosum et pulverulentum scutellis 

 rubiginosis, p. 198. A=Stictina fuligixosa (Deles.). The 

 specimen figured is broken up into two portions, both of which 

 are fertile. B, C = S. limbata (8m.). Two small sterile speci- 

 mens are present. 



Series III. More arid species, peltate and clypeate ; the bracts 



various, but not hollow, nor scutellate. 



Division I. Peltse entirely adnate to the margins of the leaves 



or their appendices. 



Tab. XXTIL, Dill. Hist. Muse. 

 P. 101. Lichenoides polyschides villosum et scabrum, peltis 

 parvis, p. 109, = Stictifa sylvatica (£.). The specimen inhb. 

 Dill, is entirely sterile. In describing and delineating the form 



