normandina] dbrmatocarpaoe.*: 273 



mandina Jungermannise Nyl. in Act. Soc. Linn. Bord. ser. 3, i. 

 p. 419 (1856) ; Mudd Man. p. 268. 



Exsicc. Leight. n. 367 ; Cromb. n. 197 ; Larb. Lich. Hb. 157 

 & Lich. Ccesar. n. 93. 



Hub. On mossy trees. — Distr. Not common, but occurring in all 

 parts of the British Isles. — B. M. St. Peter's Valley, Rozel, Jersey ; 

 Guernsej' ; near Launceston, and Withiel, near Bodmin, Cornwall ; 

 Plymouth, near Lidford, Ullacombe near Bovey Tracey, and near 

 Ilfracombe, Devon ; near Ryde, I. of Wight ; New Forest, Hants ; 

 St. Leonard's Forest, Poynings Common, Saddlescomb, Arundel Park, 

 Glynde, Ardingly, Wiston, Crowborough and Beeding JPriory, Sussex ; 

 Dolgelly and Barmouth, Merioneth ; Keswick, Cumberland ; The 

 Trossachs, Glen Lochay, Glen Falloch and Finlarig, Killin, Perth- 

 shire ; Barcaldine, Argyll ; Glen Nevis, Invernessshire ; Derriquin, 

 Killarnej^ Kerry ; Letterfrack, Connemara, Galway. 



103. DACAMPIA Massal. Sulla Lectdea HooJceri di Schserer, 

 Verona, 1853, p. 7. (PL 39.) 



Thallus squamulose, spreading, with a black subiculum. Algal 

 cells Pleurococciis. Perithecia entire, carbonaceous ; paraphyses 

 persistent, branched ; asci elongate ; spores ellipsoid-fusiform, 

 variously septate and muriform, brown. 



A somewhat doubtful monotypic genus ; the perithecia have been 

 regarded by A. Zahlbruckner (Pflanzenf. i. 1*, p. 78 (1908) ) and other 

 lichenologists as a fungus parasitic on a lichen-thallus. 



1. D. Hookeri Massal. /. c. t. 1, fig. 4. — Thallus squamulose, 

 whitish, thick, somewhat lobate at the circumference, appressed 

 and farinose, not corticated. Perithecia rising from the lower dark 

 stratum, obpyriform with a somewhat wide ostiole ; peritbecial 

 wall dark-brown, rather thick, entire ; paraphyses stoutish, 

 branched and entangled, conglutinate or free ; asci elongate ; 

 spores 8 in the ascus, ellipsoid, fusiform, 3-5-septate, rarely only 

 2-celled, constricted in the middle, becoming muriform, dark- 

 brown, the end cells small, lighter in colour, 0,020-35 mm. long, 

 0,010-12 mm. thick. — Verrucaria Hookeri Borr. in Engl. Bot. 

 Suppl. t. 2622, fig. 2 (1830); Hook, in Sm. Engl. Fl. v. p. 155; 

 Leight. Angioc. Lich. pp. 64, 77, t. 27, fig. 5. Lecidea HooJceri 

 Schjer. Enum. p. 102 (1850) ; Cromb. Lich. Brit. p. 88 ; Leight. 

 Lich. Fl. p. 309 ; ed. 3, p. 322. 



Exsicc. Leight. n. 318. 



Considerable confusion of views has arisen as to the structure 

 and systematic position of Borrer's plant, the perithecia having 

 more recently been described as fungi parasitic on the thallus of 

 Lecidea HooJceri, the latter having 2-celled brown spores. There 

 is no record of L. HooJceri in Britain other than the specimens bear- 

 ing the perithecia of Dacampia, and in that respect the continental 

 specimens examined agree with the British. The 2-celled brown 

 spores are occasionally present along with the more developed 

 muriform ones. The thallus becomes dark-brown in the lower parts, 

 II. T 



