194 LICHENACEI. [raMALIXA. 



vwriJia €. ccqntata Aeb. Lich. Univ. (1810) p. 601 ; Nyl. Bull. Soc, 

 Liuu. Xormand, ser. 2, iv. (1870) p. 149. Ramalina polymorpha 

 Sm. Eng. n. V. p. 2:29. 



Distin«ndslied by the lacinise, -wliicli are esorediate at tlie sides, and by 

 tbe situa"tion of the apothecia. The apices of the lacinise are subfasti- 

 s-iate, with the soredia globuloso-grainilose, or partly pulverulent, whitish 

 and convex. It should perhaps, as Nylander suggests (/. c), rank as a 

 distinct species, intermediate between B. jwlpnorpha and H. poUinaria. 

 In this counti-y it is always sterile. 



Hub. On weathered gi-anitic boulders in mountainous regions. —Bistr. 

 Local and scarce in Is. England and in the N. Grampians, Scotland. — 

 ]}. M. : Teesdale, Durham. Ben-naboord, Aberdeenshire. 



7. R. poUinaria Ach. Lich. Univ. (1810) p. 608.— Thallus sub- 

 erect, somewhat elongate, subflaccid, subcompressed, sublaciinoso- 

 unequal, and longitudinally rugose towards the base, lacero-Iaciniate, 

 slightly shining, pale straw-coloured or glauccscent ; lacinise plane, 

 sublinear, variously divided, with white farinose, scattered soredia 

 (medulla K — ). Apothecia si;bterminal, moderate, concave, pale or 

 glaucous, the receptacle unequal beneath ; spores oblong, straight or 

 .slightly curved, 0,010-15 mm. long, 0,004-6 mm. thick. — Gray, 

 jS^at. Arr. i. p. 407 ; Sm. Eng. El. v. p. 225 ; Tayl. in Mack. E1. 

 Hib. ii. p. 85 j)ro parte ; Mudd, Man. p. 74 ; Cromb. Lich. Brit, 

 p. 25 ; Leight. Lich. El. p. 95, ed. 2, p. 475, ed. 3, p. 87. — Lichen 

 jjoUinarim^Xesix.Xei. Ak. Haudl. (1795) p. oQ; Eng. Bot. t. 1607 

 (descr. pro parte). Lichen farinacens var. 3, ■\Vitb. Arr. ed. 3, iv. 

 p. 50. Lichenoides lacunosinn lacerum, anrjustitis Dill. Muse. 163, 

 t. 21. f. 57 D, E. — Brit. Exs. : Mudd, n. 46 pro parte ; Cromb. n. 130. 



Related to JR. farinacea as well as to the preceding species, but dis- 

 tino-uished from both by the lacinise and the soredia. The lacinije are 

 vanable, the typical fomi being that described [elatior Ach. Lich. I'niv. 

 p. 608). The soredia are numerous, though occasionally they occur only 

 towards the apices, sometimes rendering the thallus inflated on the oppo- 

 site surface. In this country the apothecia are rarely met with. The 

 sperniogones, which are also rare, have the spermatia cylindrical, about 

 0,004 mm. long, and 0,001 mm. thick. 



Hab. On the trunks and branches of old trees, rarely on rocks, in 

 wooded maritime and upland tracts. — Distr. General and common in S. 

 and W. England, local in N. Wales and the Chauuel Islands ; very rare 

 in S. Scotland ; not seen from Ireland. — B. M. : La Roche, Jersey ; 

 Island of Sark. "Waltham Abbey, Essex ; near Maidstone, Kent ; Hen- 

 field and near Lewes, Sussex ; New Eorest, Hants ; near Eyde, Isle of 

 "NVio-ht ; Plymouth and Streat, Devonshire ; Pentire, The Lizard, and 

 near Penzance, Cornwall ; Fresco Island, Scilly ; Stowe Park, Bucking- 

 ham ; Twycross, Leicestershire ; Island of Anglesea ; Ingleby, Cleveland, 

 Yorkshire'; Teesdale, Durham; near Hexham, Northumberland; near 

 Skelton, Cumberland. New Galloway, Kirkcudbrightshire ; Salisbury 

 Crags, Edinburgh. 



Form hnmilis Ach. Lich. Univ. (1810) p. 008. — Laciuicc short, 

 aggregate, complicate, often flexuose ; soredia large, usually con- 

 fluent. Apothecia vary rare. — Orom'). Jo ira. Bjt. 1872, p. 73 



