426 



THE LICHEN-FLOKA 



****** Parasitic species. 



32. A. varians, (Dav.) thallus none ; ardellce parasitic, hymeni- 

 colar, rotundate, single or co?ifluent, dull-black, sessile, plane or more 

 or less convex, roughish, internally pale-brown ; spoi-es 8, colourless, 

 oblong, normally 3-septate (sometimes 2, sometimes 1-septate). 



Parasitic on the apothecia of Lecanora glaucoma, frequent. 1793. 



Stn :— Dav. in Linn. Soc. Tr. 2. p. 284. (1793J Nyl. Scand. 260. Arthonia 

 glaucomaria & parasemoides, Nyl. Arth. p. 98. Leight. in Ann & Mag. Nat. 

 Hist. Oct. 1856. Mudd Man. 251. 



Fig :— Linn. Trans. 2. t. 28. f. 3. Ann. & Mag. Nat. Hist. 1856. t. 11. 1 1. 2. 

 3. 4. 5. 



Exs :— Leight. 247. Mudd 238. Larbal. 47. Am. 210. 211. 



Geog. Distklb :— ^Sweden, Finland, Norway, France, Bavaria, Austria. 



Bot. Peov:— 5, 6, 7...10...15...23...30, 31. 



England : — Cliffrigg ! Ayton Moor ! Yorkshire. Mr. Mudd. between Miln- 

 thorpe and Heversham, Westmoreland. Mr. Martindale. Haughmond Hill ! 

 Caer Caradoc ! Long Mynd ! Shropshire. 



Scotland : — Kincardine. Rev. J. M. Crombie. 



Ibeland : — Barclay's Bock co. Down. Aim. Jones. Killiney. Dr. Moore. 

 Lambay Island. Mr. Carroll. 



Wales: — S. W. side of Anglesea. Bee. Hugh Dairies. (1793.) Barmouth! 

 Gimlet Bock ! Pwllheli. Goodwick Bay ! Pembrokeshire. 



Channel Islands : — Petit Port ! La Moye ; Noirmont ! Jersey. Mr. Lar- 

 haUstier. 



"Spores .003 in. long, by .001 in. broad." {Mudd.) " Spores .012— 18 mm. 

 long, .005—7 mm. broad." (Nyl.) Spores .016— .017 mm. long, .0065— .007 

 mm. broad. 



33. A. pvMctella, Nyl. thallus none ; ardellce parasitic, innato- 

 subsessile, punctiform, solitary, scattered ; spores 6-8, colourless, 

 obovato-clavate, \-sei>tate. 



Parasitic on thallus of Lecidea albo-atra, (Hoffm.) rare. 1859. 



Stn :— Nyl. MS. in Carroll's Contrib. to Irish LichenoL p. 10. (1859.) Mudd 

 Man. 252. 

 Geog. Distkeb : — Europe. 

 Bot. Pbov :— 20. 



Ireland : — Shore below Queenstown ! Mr. CarrolJ. (1859.) 

 " Spores .0025 in. long, by .001 in. broad." {Mudd.) 



34. A. galactinaria, Leight. thallus none ; ardellw parasitic, 

 hymenicolar, rotundato-difformed, single or confluent, nigro-fuscous, 

 more or less convex ; spores 8, colourless, oblongo-ovoid, 1-septate. 



Parasitic on the apothecia of Lecanora galactinaf. dispersa, rare. 



1876. 



Bot. Peov : — 5. 



England :— Old walls Barnsley Park ! Gloucestershire. Mr. Joshua. (1876.) 

 I renders the gelatina hymenea of the matrix-apothecium blue, but tinges 

 that of the Arthonia of a dark dingy-brown, except the spores in the asci, 

 which are yellow-brown. The spores are frequently nucleolate with a tendency 

 to form an additional septum, when old they become fuscous. Spores .011 — 

 .013 mm. long, .004— .005 mm. broad. 



IX. GRAPHIS, Ach. Nyl. 



Thallus thin, epiphlseodal or hypophteodal. Apothecia (lirellae) 

 black, linear, variously divided or simple, innate or immersed at 

 the base. Perithecium black, lateral or entire. Spores colourless 

 or fuscous, pluri-locular, coloured blue by iodine. Gelatina hymenea 

 untinged by iodine. Paraphyses slender, distinct. 



