326 LICHEKACEl. [oTROrHOBA. 



Forfarshire ; Craig Coinnocli, Lochnagar, near Invercaiild, (rlen Callater 

 aud Ben Macdlmi, Braemar, Aberdeensloiie ; Glen Xevis and Ben Nevis, 

 InverDess-sliii-e. 



Form 1. fimtriata Mudd, Man. (1860) p. 118. — Thallus sparingly 

 fibrillose at the margins and on the under surface ; otherwise as 

 above. — Cromb. Grevillea, xv. p. 79. — Umhilkaria proboscidea form 

 firnhriata Leight. Lich. Fl. p. 160, ed. 3, p. 147. Gyrophora deusta 

 ft.pnhriata turn. & Borr. Lich. Br. (1839) p. 222. 



Seems always to grow associated with the type, of which it is probably 

 to be regarded only as a state, since at times similar conditions occur in 

 the variety. The fibrillse are usually very few, though occasionally 

 they are more numerous. 



Hub. On rocks and stone walls in upland aud subalpine district*!. — 

 Distr. Local aud rare in X. AVales and N. England ; more common 

 among the Grampians, Scotland. — B. M. : Snowdon, Carnarvonshire ; 

 Swinhope Fell, Durham. Ben Lawers, Perthshire ; Clova, Forfarshire ; 

 Craig Coiunoch, and Caii-ngonu, Braemar, Aberdeenshire. 



Form 2. exasperata Ach. Meth. (1803) p. 105. — Thallus deeply 

 plicato-corrugate, the plica) crowded, undulate, and subreticulate. — 

 Cromb. Grevillea, xv. p. 79. — Umhiliciiria jprohoscidea var. exasperata 

 Cromb. Lich. Brit. p. 40. Gyropdiora deusta y. corrugata (HofFm.), 

 Turn. & Borr. Lich. Br. p. 222. UmhUkaria varni 6. deusta c. 

 corrugata Leight. Ann. Mag. Xat. Hist. ser. 2, xviii. p. 290. Gyro- 

 phora proboscidea c. corrugata Mudd, Man. p. 118. UmbUicaria 

 prvboscidea f. eorrvgata Leight. Lich. Fl, p. 160, ed. 3, p. 148. — 

 The trivial name corrugata Hoffra. (PI. Lich. (1794) p. Go) has 

 priority ; but I have retained that of Acharius in order to prevent 

 cojifusion with G. corrugata (Ach.) !NyI. 



Differs in the very prominent reticulate rugfe of the upper surface, 

 which are nearly a line in height, and which " look like a series of erect 

 curled squamules" sometimes developing into small lobules. The.se 

 occur chiefly towards the centre of the thallus (except in smaller plant.*), 

 beyond which it is usually very rugose, ^' almost papillose." To this 

 latter state belongs var. mcsenterifurmis Tnon Wulf. nee Schjer.), Turn. 

 & Borr. I. c, Leight. //. cc, Mudd, Man. p. 118. The few British .specimens 

 are sparingly fertile. 



Hah. On rocks and boulders in alpine places. — Distr. Very scarce 

 aujong the N. Scottish Grampians. — B. M. : Ben-naboord, Braemar, 

 Aberdeenshire. 



Yar. ft. deplicans Fr. fil. Lich. Scand. i. (1871) p. 163.— Thallns 

 brown-fuliginous, scarcely greyish in the centre, continuously rugose 

 or rv.gulose on the upper surface. — Cromb. Journ. Bot. 1882, p. 273. 

 — UrabiJicaria proboscidea var. deplicans Xyl. Lich. Scand. (1861) 

 p. 116. 



"Well distinguished from the type by the absence of reticulate plica?. 

 In the few British sjxcimens the under surliice aud the margins are mure 

 or less hbriUutf, so that in this respect they are analogous to lorm_^w»- 



