OF GREAT BRITAIN. 83 



Channel Islands :— Jersey, Guernsey, Mr. Zarbalestier. 



"Spores .002 in. long, by .001 in. broad." (Mudd.) " Spores .007-9 n,m. 

 long, by .0045—55 mm. broad," (Nyl.) "Spores .007—10 mm. long, .0045—60 

 mm. broad." (T. M. Fr.) 



Var. stictocera, Ach. lacinise scattered over with prominent dark 

 fuscous cephalodia. 



On trees, not uncommon. 



Syn :— Ach. L. U. p. 442. Nyl. Syn. 285. Crombie in Journ. Bot. n. a, 1. p. 

 233 

 Fig :— Ach. 1. c. t. 10. f. 3. B. 

 Bot. Pbov:— 5. ..15. 



England :— Nesscliffe Hill ! Wrekin ! Shropshire. 

 Scotland : — Firwood above manse at Killin. Rev. J. M. Crmtibie. 



Var. gracilis, Ach. thallus with small fuscous or fuscous-black 

 tubercles on the apices (K+C+). 

 On sandy banks and shrubs. 



Syn :-Ach. h. V. 442. 



Fig :— E. Bot. 1. 1353 Westring Faergh. t. 11 C. 



Geog. Distbib: — Sweden. 



Bot. Pbov:— 1...31. 



England : — -Warren opposite Exmouth, Devonshire. Mr* Brodie. 



Channel Islands : — Quenvais, Jersey ! Mr. Larbalestier. 



Mr. Parfitt (in litt.) says, "The habits of this plant in this locality (Ex- 

 mouth), so far as I know, have not been described. The plant grows attached 

 to the stems and branches of Erica tetralix, and nearly all the branches of the 

 Evernia, but more particularly in the largest plants, become decumbent and 

 attach themselves to the branches of the Erica, also and in every instance where 

 this is the case the apices secrete those dark disks. An examination of these 

 dark dots under a high magnifying power shows them to be composed of a 

 number of minute hyaline filaments surmounted with a dark brown grumous 

 mass of cells, whieh are more or less tenacious or glutinous when moist, and 

 adhere firmly to anything to which they may attach themselves." 



III. RAMALINA. Ach. Fr. 



Thallus whitish or pale, compressed, somewhat shining, riges- 

 cent, erect or prostrate, laciniate, alike on both sides. Apothecia 

 scattered or marginal, concolorous. Spores colourless, oblong, 

 curved, 1-septate, Paraphyses distinct. Sterigmata elongato- 

 pauci-articulate with anastomosing filaments. Spermatia cylindri- 

 cal, or oblongo-cylindrical, straight. 



1. R. thrausta, (Ach.). pale straw-colour, filiform-terete or sub- 

 terete, here and there compressed, somewhat shining, very slenderly 

 divided, and excessively branched, capillari-attenuate and interwoven 

 at the apices ; cortical layer filamentose ; medulla K — ; apothecia 

 unknown. 



On old firs and sandy soil in subalpine regions, rare. (1860). 



Syn : — Alectoria thrausta, Ach. L. U. 596, Syn. 294. R. thrausta, Nyl. Mon. 

 Kamal. 18 ; Leight. Not. Lich. 35 ; Crombie in Journ, Bot. n. s. 1. 71. 



Exs :— Fries L. S. 267. Arn. 574. a. b. c. d. e. 



Geog. Distbib :— Europe. 



Bot.Peov :— 17. 



Scotland : — Bay of Nigg, Coast of Kincardineshire. Rev J. M. Cromhw. 

 (1860). 



2, R. calicaris, (Hffin.). pale glaucous-grey, or albido-flavescent, 

 rigescent, erect, dichotomously branched ; laciniou linear, com- 

 pressed, elongated, attenuated at the apices, longitudinally lacunoso- 



