574 BET. J. M. CROMBIE ON THE LICHENS OF 



and position of the apotheeia, Dillenius evidently paid little atten- 

 tion to his own dictum in p. 200 :— " Quantum videre possint 

 homines, si imaginatione polleant." 



F. 102. Lichenoides digitatum cinereum, Lactucse foliis sinuosis, 



p. 200. A, B, C, D 



). Various states, 



more or less evolute. Eightly identified by Acharius in L. TJ. 

 p. 518. E = P. carina (Z.)- Typical and fertile. Along with 

 these are also some fragmentary specimens of P. polydactyla. 



F. 103. Lichenoides digitatum rufeseens, foliis Lactucae crispis, 

 p. 103. A=Peltigeba bufescens (LTfm.). Typical, and at 

 once distinguished from the preceding, as Dillenius observes, by 

 the thallus being glabrous on the upper surface. B = a state with 

 the margins sparingly isidiiferous, but is a bad specimen of this 



) 



Mu 



F. 104. Lichenoides subfuscum, peltis horizontalibus planis, 



p. 205. A 



{Hffhi.) (minor). A state 



closely approaching to var. muscorum, Scbaer., but with the apo- 

 theeia rather larger. B = P. hobizontalis. Typical. C = P. 

 scutata {Deles.). The specimen in hb. Dill, seems to be en- 

 tirely referable to this, though infertile and otherwise not in very 

 good condition. Hitherto not identified. 



F. 105. Lichenoides fuscum, peltis posticis ferrugineis, p. 206. 

 A=Nephbomitjm ljevjgatttm {Ach.). A small but fertile speci- 



men. B, C 



). Sterile. This 



Of this there 



latter was, strangely, not identified by Acharius. 



F. 10G. Lichenoides digitatum laete virens, verrucis nigris no- 

 tatum, p. 207, = Peltidea aphthosa (Z.). Fertile, and a good, 

 characteristic specimen. 



F. 107. Lichenoides cinereum polydactylon, p. 207, = Pelti- 

 gera poltdacttla, H.ffm. t of which C is steri] 

 are several specimens sufficiently typical. 



F. 108. Lichenoides membranaceum pellucidum, peltis digitatis 



geminatis, p. 208, = Peltigera poltdacttla f. pellucida, Ach. 



This is but a state of the type in which the fertile lobules are gemi- 

 nate. 



F. 109. Lichenoides parum virescens, peltis nigricantibus planis, 

 p. 208, = Peltidea venosa (L.). The three fragments delineated 

 in the figure are present in hb. Dill. 



