ADDENDA ET COREIGENDA. 



Page 2, for Fam. 1. Weisaeae, read WeissisB. 



Page 12, for Fam. 3. Triohostomaoeas, read Triohostomeae. 



Page 2S, Une i, delete all after "inner," and instead r«acJ— "16 fili- 

 form, carinate processes, as long as or longer than outer teeth." 



Page 24, line Wfrom bottom, for Tetradontium read Tetrodontium. 



Page 47, Une 10, delete comma after apex. 



Page 57, line 9, for Wheeldale read Wheldale. 



Page 71, after Une 19 add — 



Var. 5. KUQIFOLIUM, Boswell. L. somewhat contorted or crisped, 

 and more strongly undulated — perhaps only a form. 



Stockton Forest, Yorkshire, 1842 (Spruce), again 1874 (Anderson). 



Page 79, after 91. C. flexuosua, add — 



Var. B. PALUDOSUS, Sehp, Taller and more robust. L. longer, 

 more distant, often purplish at base. 



Boggy heaths. Llyn Ogwen, 1874, and Loch Maree, 1875 (H. 

 Boswell) ; Barmouth, Cader Idris. 



Page 152, Vines 21, 22 — 0. gracile was found in Finisterre (France) 

 by M. Tanguy, Jun., in 1880, the first time it has been found 

 out of England. 



The word "mamillate " has unfortunately been several times spelled 

 with double m. 



