GYKOPHOEA.] GYEOPHOREI. 327 



briata of the type. It somewhat resembles G. arctica, but at once differs 

 in the smaller and thinner thallus. The apothecia are numerous, though 

 small, in our specimens. 



Hob. On granite rocks in alpine situations. Distr. Very local and 

 rare among the N. Grampians, Scotland. B. M. : Head of Glen Callater 

 and Ben-naboord, Braemar, Aberdeeushire. 



3. G. cylindrica Ach. Meth. (1803) p. 1 07. Thallus monophyl- 

 lous or polyphyllous, moderate or somewhat small, thickish, smooth, 

 sinuato-lobed, greyish or greyish-brown, usually greyish-pruinose, 

 black-fib rillose at the margins ; beneath pale, here and there blackish, 

 more or less fibrillose( medulla K ,CaCl~). Apothecia at first sessile, 

 plane, then pedicellate, and at length subglobose, gyroso-plicate, 

 thinly margined : spores 0,010-14 mm. long, 0,006-8 mm. thick. 

 Gray, Nat. Arr. i. p. 477; Hook. Fl. Scot. ii. p. 42 ; Sin. Eng. Fl. 

 v. p. 218; Tayl. in Mack. Fl. Hib. ii. p. 155 ; Mudd, Man. p. 119. 

 Umbilicaria cylindrica Cromb. Lich. Brit. p. 40 ; Leight. Lich. 

 Fl. p. 161, ed. 3, p. 148. Lichin cylindrwus Ach. Prodr. (1798) 

 p. 148. Gyropliora proboscidea Turn. & Borr. Lich. Br. p. 219. 

 Umbilicaria varia t. proboscidea Leight. Ann. Mag. Nat. Hist. ser. 2, 

 xviii. p. 291. Liclien proboscideus Huds. Fl. Angl. ed. 2, p. 551 ; 

 Eng. Bot. t. 522 (two upper figs.) ; With. Arr. ed. 3, iv. p. 65. 

 Lichen crinitus Lightf. Fl. Scot. ii. p. 360. Lichenoides corneum, 

 marginibus eleganter fimbriatis Dill. Muse. 218, t. 29. f. 116 A. 

 Brit. Exs. : Leight. n. 95 ; Mudd, n. 88. 



AVell distinguished from the preceding by the thallus being smooth, 

 paler beneath and ciliate at the margins, as also by the absence of any 

 medullary reaction. It is commonly monophyllous but often also poly- 

 phyllous, very unequally lobed, naked or sometimes covered with a 

 ca?sious pruina. In other respects it is a rather variable plant, giving 

 rise to the forms and varieties that follow. The apothecia are usually 

 numerous, as are also the spermogones, especially in otherwise sterile 

 specimens. 



Hub. On rocks and boulders from upland to alpine situations. Distr. 

 .Rather local in the mountainous tracts of W. and N. England and N. 

 Wales ; general and plentiful among the Grampians, Scotland ; local in 

 W. Ireland. B. M. : Dartmoor, Devonshire ; Dol^elly and Cwm Bychan, 

 Merionethshire ; Glyder Vawr, Carnarvonshire ; Cronkley Scarr, 

 Yorkshire ; Teesdale/ Durham. Ben Lawers and near Aberfeldy, Perth- 

 shire ; Clova, Forfarshire ; Ben-naboord, Morrone, and near Invercauld, 

 Braemar, Aberdeenshire ; Ben Nevis, Inverness-shire. Mangerton and 

 Brandon Mts., co. Kerry ; Connavalla, co. Cork. 



Form 1. denticnlata Ach. Meth. (1803) p. 107. Thallus with 

 the margins lacero-laciniate, coarsely fringed and denticulate ; other- 

 wise as in the type. Mudd, Man. p. 119. Umbilicaria cylindrica 

 var. denticulata Leight. Lich. Fl. p. 162, ed. 3, p. 149. Umbilicaria 

 varia t. proboscidea b. denticulata Leight. Ann. Mag. Nat. Hist, 

 ser. 2, xviii. p. 293. Gyrophora proboscidea p. denticulata Turn. & 

 Borr. Lich. Br. p. 219. Liclien proboscideus Eng. Bot. t. 522 (two 

 lower figs.). Lichenoides corncum, marginibus clec/anter jimbnatis 

 Dill. Muse. 21 S, t, 29. f. 116 B. 



