190 LICHEN ACEI. [UIMALINA.. 



apices aad margins: soredia large. Apothecia not seen. — Cromb. 

 Grevillea, vii. p. 141. — Parmdia farinacea Z. phalerata Ach. Meth. 

 (1803) p. 2Q4:. Lichen farinaceus var. 2, With. Arr. ed. 3, iv. p. 50. 

 Lichenoides se'/ni'ntis anc/ustioribus, ad marcjines verrucosis et pulve- 

 rulentis Dill. I. c. D, E. 



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

 tions of i2. fastigiuta, 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. Soe. Bot. Fr. t. xxv. 

 (1873) p. 3S0 (obs.). — Thallus smaller, smooth, not nervose ; other- 

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

 media Del. e.c Xvl. Bull. Soc. Linn. Xormand. ser. 2, t. iv. (1870) 

 p. 106; Cromb. Journ. Bot. 1873, p. 132; Leight. Lich. Fl. ed. 3, 

 p. QO.—Brit. Exs.: Larb. Lich. Hb. u. 248. 



Distinguished bv the generally smaller size and especially by the smooth 

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

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

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

 gones are absent. 



Hah. 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 Penzmce, Cornwall; Annet Island, Scilly (frt.). Black Island, 

 Appin, Argvleshire. KiUery Bay, Connemara, co. Galway. 



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

 rigid, compressed, sublineari-laciuiate, greenish-grey ; laciniiE 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. (S'6 ; Sm. Eug. FL 

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

 p. 472, ed. 3, p. 85. — Kamalina cfiUcuris a. fraxinea Mudd, Man. 

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

 fraxineus Linn. Sp. PI. (1753) p. 1146: Huds. FL AngL p. 541 

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

 Lichenoides loncjifoUum rugosum rigidum Dill. !Mu8C. 165, t. 22. 

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

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

 parte. — Brit. Exa: : Bohl. n. 21 pro parte ; Leight. n. 38 pro parte ; 

 Mudd, n. 42 pro parte. 



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



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



(var. f(fini(7'f()rmiii Ach. Lich. I'niv. p. GO-"?). From Ii. calicari-i it maybe 



recognized by the always broader rugo.-ie laciuiaj, by the rugose receptacle 



