410 Rey. W. A. Leighton on the Determination of the 
68, 69, 70, 71, 72, 73, 74, 75, 76, 77, 78, 79, 80; Anz, C.C. 
7; Scher. L. H. 56, 57, 58, 59, 60, 61, 265, 589; Leight. 
Exs. 825, 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), Hperjes (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. pyaxidata the 
reaction was K—, leaving a brownish stain when dry. 
19. C. subdelicata, Nyl. Dr. Nylander writes (en litt.) that 
he is acquainted with a lichen from Tropical America which 
he has named C. subdelicata, 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 subdelicata 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. 18, 14, 15, 16,17; Mudd, Br. Cl. 34, 35, 36, 37; Mudd, 
Br. L. 10, 11, 12; Bohl. 7; Fellm. Lapp. 80; Coém. 1021, 
1022; Scher. 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, B, 
F,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 (Scherer), 
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. Montagne), Barmouth, 
North Wales; Long Mynd, Stiperstones, and Wrekin, Shropshire. 
Dr. Nylander states (in itt.) that Fr. L. S. 58, “ C. gracilis,” 
has K—, and comprises hybrida and chordalis. 
Var. cornuta (C. cornuta, Fr. Nyl. Syn. i. p. 198) = Fr. LS. 
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). 
