in the Hookerian Herbarium at Kew. 119 



Hills and Cairn-a-Drochel (Mr. W. Gardner), Ireland (Miss 

 Hutchins and Sir T. Gage). 



Europe : — Mont Gaillard, Pyrenees (Mr. R. Spruce), Cabo da 

 Rocca, Portugal (Welwitsch). 



North America : — Ohio (Lee). 



Tropical America : — Demerara (Mr. Harris), Jamaica (Purdie), 

 Mexico (Galeotti), Guyana (C. S. Parker). 



South America : — Rio (Milne) . 



India: — Java ( ? ). 



Australasia : — New Zealand (Dr. J.D.Hooker and Dr. Jolliffe), 

 Otago (Hector), Middle Island (Haast). 



Forma seductrix, Nyl. 



Australasia: — Brown's River, Tasmania (Mr. Oldfield). 



Dr. Nylander informs me {in litt.) that C seductrix, Del., has 

 reaction K + . This was not the case with the specimen so 

 named by Dr. Nylander himself in herb. Kew. 



III. Cladina, Nyl. 



A. PhcBocarpa, 



^Reaction (Kf+ C + ). 



The application of both the reactives enables us to distinguish 

 more accurately and readily the different species which have 

 been heretofore comprehended under the name rangiferina. 

 The true or typical rangiferina has the reaction K -f C — . The 

 sylvatica has a faint yellow reaction with K, which, on the 

 application of C, becomes of a fuller and more decided yellow 

 (KfH- C + ). Pycnoclada has the double negative reaction 

 (K— C— ). Peltasta has the negative reaction with K, but the 

 yellow reaction on C being subsequently applied (K— C + ). 

 Candelabrum has the double negative reaction (K— C — ). 



"37. C. sylvatica, Hoffm. = Schser. L. H. 78. 



Britain :— Pentland Hills ( ? ) . 



Europe : — Sweden and Norway ( ? ), Vosges (Dr. Mougeot), 

 Switzerland (Sir W. J. Hooker), Coria Transtag., Portugal 

 (Welwitsch) . 



North America : — Newfoundland (Miss Brenton) , Arctic 

 Greenland (Dr. Lyall & Dr. Sutherland), Hunde Islands (Dr. 

 Sutherland), Cascade Mountains, British Colombia, 7500 feet 

 (Dr. Lyall), Disco (Dr. Lyall), Halifax (Kendal), Sitka (Barclay). 



South America : — Magellan's Straits (King). 



India : — Jongri, reg. alp. 12,000 ; Lachong, reg. temp. 4000- 

 7000 feet; Kambachen, reg. alp. ? Sikkim (Dr. J. D. Hooker); 



