194 LICHENACEI. [RAMALINA. 



morpha e. capitate Ach. Lich. Univ. (1810) p. 601 ; Nyl. Hull. Soc. 

 Linn. Normand. ser. 2, iv. (1870) p. 149. Kamalina poly morpha 

 Sm. Eng. Fl. v. p. 229. 



Distinguished by the lacinise, which are esorediate at the sides, and by 

 the situation of the apothecia. The apices of the laciniae are subfasti- 

 giate, with the soredia globuloso-granulose, or partly pulverulent, whitish 

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

 distinct species, intermediate between R. potymorpha a.nd It. pollinaria. 

 In this country it is always sterile. 



Hab. On weathered granitic boulders in mountainous regions. Distr. 

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

 B. M. : Teesdale, Durham. Ben-naboord, Aberdeeushire. 



7. R. pollinaria Ach. Lich. TJniv. (1810) p. 608. Thallus sub- 

 erect, somewhat elongate, subflaccid, subcompressed, sublacunoso- 

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

 slightly shining, pale straw-coloured or glaucescent ; laciniae plane, 

 sublinear, variously divided, with white farinose, scattered soredia. 

 (medulla K ). Apothecia subterminal, 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, 

 Nat. Arr. i. p. 407 j Sm. Eng. Fl. v. p. 225 ; Tayl. in Mack. Fl. 

 Hib. ii. p. 85 pro parte ; Mudd, Man. p. 74 ; Cromb. Lich. Brit, 

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

 pollinarius Westr. Vet. Ak. Handl. (1795) p. 56; Eng. Bot. t, 1607 

 (descr. pro parte). Lichen farinaceits var. 3, "With. Arr. ed. 3, iv. 

 p. 50. Lichenoides lacunosum laeeritm, angustius Dill. Muse. 163, 

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



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

 tinguished from both by the laciniee and the soredia. The laciniae are 

 variable, the typical form being that described (elatior Ach. Lich. Univ. 

 p. G08). 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 

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

 0,004 mm. loug, 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 Channel 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 Ryde, Isle of 

 Wight; Plymouth and Streat, Devonshire; Pentire, The Lizard, and 

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

 ham; Twy cross, Leicestershire ; Island of Anglesea ; Ingleby, Cleveland, 

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

 Skelton, Cumberland. New Galloway, Kirkcudbrightshire; Salisbury 

 Crags, Edinburgh. 



Form humilis Ach. Lich. Univ. (1810) p. 60S. Lacinice short, 

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

 fluent. Apothecia vary rare. OromY Jo iru. Bit. 1872, p. 73 



