88 



THE LICHEN-FLORA 



Forma elatior, Ach. lacinioe suberect, elongate, plane, sublinear, 

 attenuate and albo-pulverulento-soraZtetfe at the apices. 



Fig :— Ach. Act. Holm. 1797, t. 11. f. 2. A, b. c, p. 



Exs :— Schser. 393 ; Hepp. 564. 565 ; M. & N. 546. Keioh. & Schub. 66. 



Bot Peov :— 1, 2... 4, 5. 



England :— Near Hastings (fruit). Bev. J. M. Crombie. Plymouth ! Mr. 

 Holmes., near Ida, Devon. Mr. Jacob. Beeding! Suffolk. Rev. A. Bloxam. 

 Barnsley Park, near Cirencester. Mr. W. Joshua. Haughmond Hill ! Shrop- 

 shire. 



Forma humilis, Ach. membranaceo-dilated, laciniose, with broad> 

 confluent, powdery white soredia. 



Pig :— Ach. Act. Holm. 1797, 1. 1L f. 2, D, 



Exs : — Mudd 46, in part. 



Bot. Pbov:— 1...3...10 



England : — Ingleby !, Cleveland. Mr. Mudd. Walthamstow, Essex. Mr. 

 Forster. Tunbridge Wells. Bev. J. M. Crombie. Penzance. Mr. Curnow. 



If the soredia of B. pollinaria be wetted with K it immediately sinks just 

 like water would do, but producing no reaction either on them or on the thallus. 



8. R. evernioides, Nyl. pale straw-colour or whitish, membra- 

 naceous, dilated and compressed, flaccid, svhopake, frequently reti- 

 culatcrrugose or reticulato-scrobiculate, or slightly rugulose, or here 

 and there plane, variously laciniate, lacinise difformed with broad 

 white farinoso-sorediate confluent patches or denudations of the cor- 

 tical layer ; cortical layer thin, amorphous ; medulla "K. — ; "apo- 

 thecia pallido-testacea vel pallido-glaucescentia ; receptaculum 

 subtus rugosum " ; spermogonia in pale colourless receptacles. 



On trees, palings, &c, rare in fruit. 



Stn :— NyL Prodr. GalL Alger. 47 ; Nyl. Mon. Ramal. 55 ; Crombie, 1. c. 73. 



Fig:— Ach. Act. Holm. 1797, t, 11, f. 2, E. E. Bot. 1607 ! Dill. Muse. t. 21, 

 f. 57, c. D. 



Exs : — Mudd 46 inpart. Leight. 41. 



Geog. Distbib : — Europe, Asia, Africa. 



Bot. Pbov :— 1, 2.. .4, 5.. .8.. .10.. .30. 



England : — Testwood Park, New Forest (fruit). Mr. Lydl. near Lyndhurst, 

 New Forest ! (fruit) Bev. J. M. Crombie. (1866) ; Gopsall ; Leicestershire, 

 (fruit). Beeding ! Suffolk. Bev. A. Bloxam. The Lizard. Mr. Curium. Ingleby ! 

 Cleveland. Mr. Mudd. Stoke Wood ! Exeter. Mr. Parfitt. Isle of Wight. Bev. 

 T. Salwey. Haughmond Hill ! Shropshire. 



Ireland :— Near Belfast. Dr. Taylor. 



Probably common in Great Britain but confounded with B. pollinaria. If 

 the soredia of B. evernioides be touched with K they are unaffected, but if im- 

 mediately afterwards they are wetted with C, it sinks immediately just as water 

 would do, but producing no reaction of colour either on them or on the thallns, 

 thus distinguishing it from all states of B. pollinaria. 



A parasite occasionally on the thallus. 

 : " Spores .010—15 mm. long, .0035— .0045 mm. broad." (Nyl.) 



f. monophylla, Cromb. thallus consisting of a single large 

 rounded lobe. 

 On trees. 



Stn : — Crombie L c. 73. 



England :— Lyndhurst. Bev. J. M. Crombie. 



9. R. scopulorum, (Dicks.) pale straw-colour, rigid, cartilaginous, 

 shining; laeiniai elongate, linear, subtereli^compressed, simple, or 

 branched at the apex, attenuate ; cortical layer solid, external 

 portion amorphous, internal portion filamentose ; medulla K yellow, 



