Species of the Cladoniei by the action of Hydrate of Potash. 415 



*** Erythrocarpa (K+). 



35. C. digitata, Hoffm. = Fellm. 45; Anzi, C. C. 18; Scliser. 

 L. H. 43, 44, 46; Tuck. 39; Nyl. L. P. 35; M. & N. 751 (in 

 part); Mudd, Br. CI. 68, 69, 79. 



This I also possess from Upsal (Dr. T. M. Fries), Unterson- 

 theim (Kemler), New Zealand (Mr. Allan Cunningham), Kotze- 

 'bue Sound (Dr. J. D. Hooker), Subat (Dr. Philippe), Salzburg 

 (Dr. Schwarz), Tatra, Hungary (Dr. Harslingsky), Eichstatt 

 (Dr. F. Arnold), Popertfort (Dr. Harslingsky), Canaries (P. B. 

 Webb), Australasia (Dr. J. D. Hooker), Wallington (Sir W. C. 

 Trevelyan), Leicestershire (Rev. A. Bloxam), Oswestry, Shrop- 

 shire (Rev. T. Sahyey). 



Dr. Nylander writes {in litt.) that the digitata of Delise's 

 herbarium, with its varieties, has the yellow reaction with hy- 

 drate of potash (K4-), except the variety mucronafa, Del., 

 which does not manifest any reaction (K— ). This mucronata 

 belongs to hacillaris. 



Var. ^macilenta, Hoffm., p. p. = Hepp. 113; Bohl. 8; Anzi, 

 C. C. 19 B, c; M. & N. 750; Sch^r. L. H. 33, 34; Mudd, 

 Br. L. 23, Br. CI. 72, 74, 75, 76. 



■ Subat (Dr. Philippe), Austria (Dr. Holzinger), Craigforda, 

 'Shropshire (Rev. T. Salwey), Westmoreland (Mrs. Stanger), 

 Leicestershire (Rev. A. Bloxam), Moel y Golfa and Barmouth, 

 North Wales, Wrekin and Long Mynd Hills, Shropshire. 



f. clavata, (Ach.) E. Bot. 2028; Dill. t. xv. p. 14 B = Sch8er. 

 35 ; Leight. Exs. 297, 371, 275, 403 ; Mudd, Br. L. 29, Br. Clad. 

 68, 69, 79. 



Also from Austria (Dr. Holzinger) , Leicester (Rev. A. Bloxam), 

 Guisbro' Moor, Yorkshire (Mr. Mudd), Nescliffe Hill, Wrekin 

 Hill, Long Mynd, Laurence Hill, Shropshire. 



f. pohjdactyla, Flk. = Mudd, Br. L. 28, 27, 26; Hepp. 537; 

 Mudd, Br. CI. 77, 78; Leight. Exs. 274; Schser. 454. 



Also from Fontainebleau (Abbe Coemans), Untersontheim 

 (Kemler), Cumberland (Mrs. Stanger), Leicestershire (Rev. A. 

 Bloxam), Craig-y-Barns, Dunkeld (Dr. W. L. Lindsay). 

 ' Here is another instance of two different plants having been 

 confused under one and the same name. On detecting their 

 distinction by the hydrate of potash, 1 communicated with Dr. 

 Nylander as to the proper nomenclature, and he replies {in litt.) 

 thus: — "The ' macilenta K—' is more common and better de- 

 veloped than the 'macilenta K + / and is most frequently found 

 4n the ancient herbaria under the name of C. hacillaris. Call it, 

 then, C. Florkeana "^hacillaris, Ach. et auct. pro max. p. 

 The name *C. macilenta, Hffm. pr. p. will then be appropriated 

 to the other (K + ), which certainly passes into digitata. The 



