250 GRAPHIDKI [gRAPUINA 



was given by Ny lander to a species of tlie same genus from New 

 Granada, with somewhat similar spores, but with the margins of the 

 apothccia distinctly furrowed ; it does not occur in Great Britain. 



Hah. On trees in wooded regions. — Distr. Frequent in England, 

 more especially in the Southern Counties and in S. and W. Ireland, 

 rare in Scotland. — B. M. Gwiney Moor, Cornwall ; Balcombe and 

 St. Leonard's Forest, Sussex; Bath, Somerset; Church Stretton, 

 Shropshire ; Gosfield, Hadleigh and Hockley Woods, Essex ; King's 

 Wood, Roche Abbey, Airyholme Wood and Kildalc, Cleveland, 

 Yorkshire ; near Corwen, Carnarvonshire ; Inishannon and Castle 

 Bernard, Cork ; Clonmcll, Tipperary ; McCarthy's Island, Killarney, 

 Kerry; Doughruagh Mts., Connemara, Gal way. 



Form radiata A. L. Sm. — Thallus as in the species. Apothecia 

 rather short, arranged in stellate radiate groups ; disc narrow, 

 tapering towards the ends, rarely slightly pruinose. — GrapMs 

 scripta var radiata Leight. in Ann. Mag. Nat. Hist. ser. 2, xiii. 

 p. 266 (1854). Stenographa anguina var. radiata Mudd Man. 

 p. 236 (1861). Graphis sophistica f. radiata Leight. Lich. Fl. 

 p. 371 (1871); ed. 3, p. 434. 



Exsiec. Mudd n. 215; Leight. n. 339. 



Hah. On trees. — Distr. Somewhat rare, but co-extensive with the 

 species. — B. M. Gosfield, Chalkeney Woods and Hadleigh Woods, 

 Essex; Gwydir Woods and Gloddaeth Woods, Conway, Carnarvon- 

 shire ; Hoggart's Wood, Ingleby, Yorkshire ; Ballyedmond, Cork. 



Yar. pulverulenta A. L. Sm. — Thallus thicker and whiter 

 than in the species, tartareous, and generally pulverulent, especially 

 near the apothecia, effuse or in definite roundish patches. 

 Apothecia more deeply immersed, lying in all directions, flexuose, 

 simple or branched, disc narrow or dilated and often whitish- 

 pruinose, tapering towards the ends. — Opegrapha pulverulenta Sm. 

 Engl. Bot. t. 1754 (1807) ? (excl syn.) (non Pers.). Graphis scripta 

 vars. flexuosa and divaricata Leight. in Ann. Mag. Nat. Hist. 

 ser. 2, xiii. pp. 265, 266 (1854). G. pulverulenta Leight. torn. cit. 

 p. 268. t. 6. f. 18. G. sophistica &. flexuosa and divaricata; var. 

 pulverulenta Leight. Lich. Fl. p. 371 (1871); ed. 3, p. 434; var. 

 dendriticoides Leight. /. c. p. 435 (1879). Stenographa anguina 

 wars, flexuosa amd pulverulenta Mudd Man. p. 236 (1861). 



Exsicc. Leight. n. 18 (as Graphis scripta var. flexuosa), n. 19 

 pro parte (as G. scripta var. divaricata), n. 20 as G. pulverulenta ; 

 Larb. Lich. Hb. n. 236. 



Differs from the species, more particularly in the character of the 

 thallus, which is often very pulverulent. The apothecia are usually 

 narrow, as in the species, but frequently become dilated and pruinose. 

 Smith's figure of Opegrapha 2^ulverulenta in Engl. Bot. closely 

 resembles the outward aspect of the plant, but I have been unable to 

 find a specimen in his herbarium to verify the internal structure. 



Hah. On trees in wooded regions. — Distr. Somewhat frequent in 

 the S. of England and in S. and W. Ireland, rarer in N. England and 

 Wales, evidently not yet found in Scotland. — B. M. Lyndhurst, New 



