410 Rev. W. A. Leighton on the Determination of the 



68, 69, 70, 71, 73, 73, 74, 75, 7Q, 77, 78, 79, 80 ; Anzi, C. C. 

 7; Scheer. L. H. 56, 57, 58, 59, 60, 61, 265, 589; Leight. 

 Exs. 325, 376, 377; Bohl. 24; Fellm. Lapp. 26; M. & N, 

 1157, 1156; Nyl. L. P. 20, 21, 47, 48; Massal. 154, 155. 

 Spruce, Lich. Pyren. 



Other specimens in my herbarium from Salzburg (Dr. Schwarz) , 

 Salut (Dr. Philippe), Eperjes (Dr. Harslingsky), Genoa (Prof. 

 De Notaris), Upsal (Dr. T. M. Fries), Australasia (Dr. J. D. 

 Hooker), Fermoy, Ireland (Mr. I. Carroll), Leicestershire and 

 Aberdovey, North Wales (Rev. A. Bloxam), Hants (Mr. R. S. 

 Hill), Yorkshire (Mr. Mudd), Scotland (Dr. W. L. Lindsay), 

 and Shropshire. 



In all the polymorphous forms and states of C pyxidata the 

 reaction was K— , leaving a brownish stain when dry. 



19. C. suhdelicata, Nyl. Dr. Nylander writes {in litt.) that 

 he is acquainted with a lichen from Tropical America which 

 he has named C suhdelicata, analogous to delicata, but the 

 cortex of whose podetia exhibits the reaction K— . Before 

 knowing the difference of reaction he had mistaken it for delicata. 

 This suhdelicata is known to him as coming from the West Indies 

 and Brazil. This is a correction which he wishes to be made 

 in his Syn. p. 211. 



20. C. gracilis, Hoffm. (E. Bot. t. 1284) = Richardson, Arct, 

 Amer. 13, 14, 15, 16, 17; Mudd, Br. CI. 34, 35, 36, 37; Mudd, 

 Br. L. 10, 11, 12; Bohl. 7; Fellm. Lapp. 30; Coem. 1021, 

 1022 ; Schser. L. H. 64, 66, 67, 68, 69, 641 ; Massal. It. 18, 

 19; Tuck. Am. Sept. 27* 28; Anzi, C. C. 10 a (part.) c, d,e, 

 r, g; Leight. Exs. 296, 402; M. & N. 849; Welw. Lusit. 119., 



The above references comprise the forms chordalis, macroceras, 

 and aspera, which I have also from the Pyrenees (Dr. Deakin), 

 Lisponner (Dr. Philippe), Province of Pallantiensi (Prof. De No- 

 taris), Tatra, Hungary (Dr. Harslingsky), Grimsel (Schserer), 

 Salzburg (Dr. Schwarz), Upsal (Dr. T. M. Fries), Unterson- 

 theim (Kemler), Aldershot, Hants (Mr. R. S. Hill), Yorkshire 

 (Mr. Mudd), Shropshire (Rev. T. Salwey), Keswick (Mrs. 

 Stanger), Sedan, in Ardennes (Dr. C. Montague), Barmouth, 

 North Wales; LongMynd, Stiperstones, andWrekin, Shropshire. 



Dr. Nylander states {in litt,) that Fr. L. S. 53, " C. gracilis," 

 has K— , and comprises hyhrida and chordalis. 



Var. cornuta (C. comuta, Fr. Nyl. Syn. i. p. 198) = Fr. L. S. 

 116 (fide spec, a Nyl.); Anzi, C. C. 9; Fellm. Lapp. 31; 

 Richardson, Arct. Am. 18. 



My herbarium contains also specimens of this form from 

 Jerkin and Sneelhatten, Norway (Dr. W. L. Lindsay), Upsal 

 (Dr. T. M. Fries), Holm (Dr. W. Nylander), Salzburg (Dr, 

 Schwarz), Untersontheim (Kemler). 



