190 LICHEffACEI. [lUMALIN.Y. 



apices and margins; soredia large. Apothecia not seen. Cromb. 

 Grevillea, vii. p. 141. Panmlia farinacea 3. phalerata Ach. Meth. 

 (1803) p. 264. Lichen farinaceus var. 2, With. Arr. ed. 3, iv. p. 50. 

 Lichenoides segmmtis angustioribus, ad margines verrucosis et pulve- 

 rulentis Dill. 1. c. D, E. 



Probably a stunted state ; in size and general aspect like small condi- 

 tions of R. fastiyiata, but separated by the soredia. It is apparently 

 always sterile. 



Hnb. On the trunks of trees. Distr. Only one locality in S. England ; 

 no doubt to be detected elsewhere. B. M. : Stowe Park, Buckingham- 

 shire. 



Subsp. R. intermedia Xyl. ex Laray, Bull. Soc. Bot. Fr. t. xxv. 

 (1878) p. 380 (obs.). Thallus smaller, smooth, not nervose ; other- 

 wise as in the type. Cromb. Grevillea, xv. p. 47. Ramalina inter- 

 media Del. ex Nyl. Bull. Soc. Linn. Normand. ser. 2, t. iv. (1870) 

 p. 166; Cromb. Journ. Bot. 1873, p. 132; Leight. Lich. Fl. ed. 3, 

 p. 90. Brit. Exs.: Larb. Lich. Hb. n. 248. 



Distinguished bv the generally smaller size and especially by the smooth 

 thallus. From R, subfarinacea, which it closely resembles, it at once 

 differs in the absence of any reaction with K on the medulla or the 

 soredia. The apothecia are very rare, and in our specimens the spermo- 

 gones are absent. 



Hub. On the branches of shrubs in maritime districts. Distr. Local 

 and scarce in the Channel Islands, S.W. England, the W. Highlands of 

 Scotland, and N.W. Ireland. B. M. : Near Moulin Bay, Island of Sark. 

 Near Penzance, Cornwall; Annet Island, Scilly (frt.). Black Island, 

 Appin, Argyleshire. Killery Bay, Connemara, co. Galway. 



4. R. fraxinea Ach. Lich. TJniv. (1810) p. 602. Thallus sub- 

 rigid, compressed, sublineari-laciuiate, greenish-grey ; laciniae longi- 

 tudinally rugose or nerved, or partly also transversely rugulose, 

 somewhat attenuate towards the extremities (medulla K ). Apo- 

 thecia pedicellate, moderate or large, carneo-testaceous or glaucous, 

 concave or plane, marginal and superficial, the receptacle unequally 

 rugose: spores oblong or oblongo-ellipsoid, curved, 0,011-16 mm. 

 long, 0,005-7 mm. thick. Hook. Fl. Scot. ii. p. 68 ; Sm. Eng. Fl. 

 v. p. 225; Tayl. in Mack. Fl. Hib. ii. p. 84; Leight. Lich. Fl. ed. 2, 

 p. 472, ed. 3, p. 85. Ramalina calicaris a. fraxinea Mudd, Man. 

 p. 73 ; Cromb. Lich. Brit. p. 25; Leight. Lich. Fl. p. 94. Lichen 

 fraxineus Linn. Sp. PL (1753) p. 1146 : Huds. Fl. Angl. p. 541 

 pro parte ; With. Arr. ed. 3, iv. p. 56 pro parte ; Eng. Bot. t. 1781. 

 Lichenoides longifolium ruyosum rigidum Dill. Muse. 165, t. 22. 

 f. 59 A, B. Lichenoides arboreum ramisum scutellatum, majus et 

 rigidius, colore virescente Dill, in Ray, Syn. ed. 3, p. 75, n. 79 pro 

 parte. Brit. Exs. : Bohl. n. 21 pro parte ; Leight. n. 38 pro parte ; 

 Mudd, n. 42 pro parte. 



The varied length and breadth of the laeinife give rise to several 

 varieties and forms. The common and typical condition is that described 

 (var. tani&formis Ach. Lich. Univ. p. 603). From R. calicaris it maybe 

 recognized by the always broader rugose laciniae, by the rugose receptacle 



