RAMALINA.] EAMALIXEI. 199 



turgid, variously difform (medulla K ). Apothecia small or nearly 

 moderate, the margin of the receptacle subcrenate. Cromb. Gre- 

 villea, vii. p. 141. Ramalina cuspidata f. breviuscula Nyl. Bull. 

 Soc. Linn. Normand. ser. 2, iv. (1870) p. 159. Ramalina poly- 

 morplia f. depressa Cromb. Journ. Bot. 1872, p. 72; Leight. Lich. 

 Fl. ed. 2, p. 475, ed. 3, p. 87. Ramalina scopulorum, ft. poJym&rpha 

 Mudd, Man. p. 74. JR. pdlymorpha pro max. parte. Leight. Lich. 

 Fl. and Cromb. Lich. Brit.'; ? Tayl. in Mack. Fl. Hib. ii. p. 84. 

 Brit. Kvs. : Leight. n. 73 ; Mudd, n. 47. 



This subspecies is somewhat variable in size, and in some of its smaller 

 states is closely appressed to the substratum. The broader laciuise, which 

 are occasionally convex, are often covered with spermogoniiferous ver- 

 rucfe and young apothecia ; the former have been mistaken by British 

 authors for the granulose soredia of R. polymorpka. It is usually in- 

 fertile. 



Hob. On rocks in maritime tracts and on mountains. D-istr. Not gen- 

 eral nor common in the Channel Islands, S., W., and X. England, on the 

 N.E. coast of Scotland, and probably also among the Grampians. B. M. : 

 Coast of Guernsey and Island of Sark. Lustleigh Cleeve, Dartmoor, 

 Devonshire ; Tintagel and Polperro, Cornwall ; Gower Peninsula, Gla- 

 morganshire ; Moel-y-golfa, Montgomeryshire ; near Thirsk and on top 

 of Roseberry, Yorkshire. Portlethen, Kincardineshire. 



Form gracilescens Cromb. Grevillca, vii. (1879) p. 141. Thallus 

 very small, pulvinato-congested, laciniae short, slender, shortly 

 divided at the apices, which are finely incurved or revolute. Apo- 

 thecia not seen. 



The characters given separate this form, which otherwise agrees with 

 the type. No apothecia have been seen, but spermogones are sparingly 

 present. 



Hab. On boulders and walls in maritime tracts. Distr. Local and rare 

 in the Channel Islands aud S. England, but may occur elsewhere. 

 B. M. : Island of Sark. Near Brighton, Sussex. 



12. R. Curnowii Cromb. ex Nyl. Flora, 1875, p. 441. Thallus 

 fruticulose, subrigid, slender, rounded or somewhat compressed, 

 shining, sparingly branched and but slightly interwoven, pale glau- 

 cous (medulla K ). Apothecia terminal and lateral, small or nearly 

 moderate, convex, pale, geniculato-adnate, the receptacle smooth ; 

 spores ellipsoid, straight, 0,011-15 mm. long, 0,004-6 mm. thick. 

 Cromb. Grevillea, iv. p. 180 ; Leight. Lich. Fl. ed. 3, p. 90. 

 Brit. Kvs. : Cromb. n. 129 ; Larb. Ctesar. n. 13. 



Allied to R. cuspidata, though, as stated by Nylander I. c., the colour 

 of the spermogones might lead us to place it in the section of R. Carpa- 

 thian. The thallus, which is moderate or more or less elongate (from 2 to 

 6 inches in length), is blackish towards the base, and the latinise, for the 

 most part simplish (rarely branched towards the apices), are usually 

 narrow, though varying somewhat in breadth. When fertile the apo- 

 thecia are numerous. The blackish spermogones are frequent, with sper- 

 matia 0,003 mm. long, 0,001 mm. thick. 



