280 Hiv. W . A. liciirliton on the British Uinbilicana;. 



" Thdilus somewhat tliickcr tlnin in 'a/ simple or more or 

 less compouiul ; vjtjnr surface marked with a few superficial, 

 nmluhitiiig, indented lines, the edj^es of which occasionally sepa- 

 rate so as to leave a smooth black interstice ; uniler surface as in 

 * a/ but more eonnnonly blotched with the paler colour of the 

 upper side." — Lich. Brit. 



This state seems ajjparently a transition to hirperhorea. 



d. lacera. Thallus very decjdy divided, divisions lacero-lobate. 



Craig Kaynoeh ! .1//'. U\ Gardner in herb. Borrer. Scotland ! 

 yfr. G. Lairsan. 



The mode of divis;ion of the margins of this state is different 

 from that of the preceding ones, and assimilates to that observable 

 in anthracina. 



A specimen in my herbarium, collected by M. Philippe at 

 Tourmalet, Pyrenees, agrees with this state. 



^Ir. Borrer's herbarium contains specimens! of G. unthracina 

 from Aeharius and Schanx-r, with which I have not noticed any- 

 thing identical among British plants. Their general appearance 

 IS different from pobjphijlUi, but the sporidia are similar. (See 

 PL X. fig. 3.) 



Pl.vtk X. fig. 2. 



yS. flocculosa, HofFui. Thallus thin, unequally lobed ; upper 

 side of a greenish C()i)per-colour, dotted, and rough with sooty 

 granulations ; under, black, naked, ])itted. 



Lichen fiocculosus, Wulf. in Jacq. Coll. A. 99. t. 1. f. 2 (1789), fide Tura. 



& Borr. 

 Lichen tleusfus, Schraiik, Fl. Salisl). 234 (1/92); Wcstring iu Act. Stockh. 



179:i(fi(le Acl).); Ach. Prodr. 1-J5 (excl. Linn. svn.). 

 Vmhilicarid fiocculosa, Iloffm. J"1. Gerni. 2. 110(1795); PI. Lich. 3. fasc. 4. 



3. t. (is. tijjs. 1— J ; Massal. Ricerch. fil (excl. syn.). 

 Gyrophora deusta, Arh. Metli. 102 (lS(».i); L. Univ. 256; Syn. 6G (excl. 



Liun. syn. in all; ; Sm. E. Hot. t. 2483. 

 Gyrophora flocculosa. Turn. & Borr. Lich. Brit. 21? (1813-); Kocrber, L. 



Gem J. 95. 

 Gyromium deustum, Wahl. Fl. Carpatli. 394 (1814); Fl. Upsal. 423; Fl. 



Sueo. 85fi (cxd. Linn. s>n.J. 

 Umbilicaria polyphylla, c. (tenxfa. Fries, L. Rtforra. 352, excl. Linn. syn. 



(1H31); Nyl. .Nonv. Classif. 175. 

 Graphis (pnen, ». concolor, Walir. Crv]»t. Germ. \. 341 (1831). 

 Gyrophora deusta, Hook. Fl. Scot. 42 (1821); Brit. Fl. 2. 218 (excl. Linn. 



syn.); Grev. Fl. Edin. 328. 

 Umbilicaria anea, y. flocculosa, Schaer. Spicil. 91. 3G4 (1823-36); Exs. 



152! 



polyphylla, fi. druslii, Tiickenn. Syn. /I (1848). 



polyphylla, fi. fiocculosn, Sciucr. Enitni. 28 (1850). 



tariu, var. flocculosa, Liiglit. Bnt. Lich. Exsicc. 219 ! 



Highlands of Scotland, Mr. Dickson. Corstorphine and Craig- 



