566 BEY. J. M. CROMBIE OK THE LICHENS OF 



Lich. ii. p. 517, s. n. L. reticulatum, Mnt., tKe specimen in hb. 

 Dill, is certainly not a lichen, but something of an Aigological 

 nature; or rather, according to Nylander in Htt., it may be a 

 Spongillus overspread by some small protococcoid Alga.] 



E. 22. Lichenoides gelatinosum, lobis crassioribus fusco-viridi- 

 bus, p. 138, = Collema ftjbyum, Ach. The specimen figured is 

 broken up into small fragments, of which only one or two are 

 very sparingly fertile. Erroneously referred by Borrer in E. B. S. 

 to his C. dermatinum. 



E. 23. Lichenoides gelatinosum atro-virens crispum et rugosum, 

 p. 139, = Collema cheilettm, Ach. Eertile, but fragmentary. 

 This is the Lichen crispus of Hudson and our older authors, but 

 not of Acharius. 



E. 24. Lichenoides gelatinosum atro-virens, auriculatum et gra- 

 nosum, p. 140. A = Collema furvtjm, Ach. Of this there are 

 only two sterile and somewhat atypical fragments, which at first 

 I was inclined to refer to C. auriculatum 9 Hffm. It is the Lichen 

 granulatus of our earlier lichenists. B, C=Leptogium plicatile 

 {Ach.). Fragmentary and sterile. Hitherto not determined. 



E. 25. Lichenoides gelatinosum fuscum, Jacobaese maritiinse di- 



visura, p. 140,= Collema mel^jntum f. maeginale {Suds.). Eer- 

 tile. Small and fragmentary specimens. 



E. 26. Lichenoides gelatinosum, foliis imbricatis et cristatis, 

 p. 140. A, B, D = Collema tekax, Ach. Eertile. The speci- 

 men is broken up into fragments. It is the Lichen cristatus of 

 our older lichenists. C = Collema pulpostjm (Bernh.). Eer- 

 tile but fragmentary. Along with these are also two fragments 

 of Collema cheileu?n, Ach. 



E. 27. Lichenoides gelatinosum palmatum, tuberculis conglo- 

 meratis, p. 141. A, B = Collema fascicitlare (£.). Eertile. 

 Always correctly identified. Along with fragments of this species 

 there are also others of Collema crispum, var. ceramoides, Borr. 

 Sterile. 



F. 28. Lichenoides gelatinosum, foliis angnstioribus tenuifor- 

 mibus, p. 142, = Leptogium fldviatile (Huds.). Infertile. Of 

 this there are four fragmentary specimens, which were no doubt 



gathered by Dillenius himself in the streams of Snowdon. 



F. 29. Lichenoides gelatinosum, foliis latioribus tenuiformibus, 

 p. 142. A, B= Collema furvum f. tun^forme (Ach.). Ste- 

 rile. C Of this unfortunately there is no specimen in hb. Dill. 

 There are, however, two fragments of another Collema which may 



