J'AK.MKLIA.J I'AIt.MKI.IKI. 2'.i') 



Ilab. ()u the Iriinks of trees and on rocks in wooded maritime and 

 luouiitainous tlistricts. — Diofr. Apparently very local and rare in S. Kn<r- 

 land (Danny, Sus.sex.//r/f Nyl.), in X. Wales, "and th<- S.W. llijrlilauds, 

 Scotland. — 11. M. : Dre\vs-y-uant, 3Ierionetli.«hiry. JJarcaldine, Argyle- 

 shire. 



3. P. cetrarioides Xyl. Flora, 1>0!), p. 290. — Thallus large, 

 orbicular or expanded, subcoriaceous, smoothish, roundly lobed, 

 jjclaucous-whito ; l)eiieath brownish-black or l^Iackisb, paler at the 

 circiimterence, with tew and short rhiziniu ; lobe.s broad, crenate, 

 elevated, crisp and soicdiate at the margins ^K + "'"'"Se-y«^llow^ CaC'l", 



medulla K(CaCl)f+ reddish). Apotliecia moderate or large, badio- 

 reddish, the margin entire ; spore.s 0,012-14 ram. long, 0,00G-7 ram. 

 thick.— Cromb. Lich. lirit. p, 34 ; Leight. Lich. Fl. p. 128, ed. 3, 

 1». 11 U. — FanniTui pevlata var. cdrariuides Del. in Dub. Bot. Gall. 

 il&.Si) p. 00 1. 



Near to P. oUvetorum, but usually (at least with us) a lai-ger plant, and 

 with a ditierent medullary reaction with CaCl. It also resembles states 

 ot I'luty^ma (flaueum, from which tlie sparinffly rhizinuse under surface 

 separates it. Jn some habitats, as also in herbaria, the thallus becomes 

 brownish and the soredia form a tine narrow b(,;rder on the margins of the 

 k;bes. The apothecia in this country aie extremely rare, and only once 

 seen fully developed. The spermogoues also are seldom present. 



Hub. Un the trunks of old trees, rarely on rocks, in wooded maiitime 

 aiid uplai.d distiicts. — Distr. Itather local and scarce in X. Wales, 

 S. Scutlaud, and the W. Highlands ; rare in the Channel Inlands. — 

 \^. M. : IJuzel, Island of Jersey. New Forest, Hampshire; Isle of 

 Wight; Dartmior and Bickleigh Vale, Devonshire; Ilelmintou, Corn- 

 wall; DolgeUy, Aberdovey, and near llarmonth (fruit), Meriunethshiie ; 

 Island of Augleseii. Xew Galloway, Kirkcudbrightshire ; Appin, .\igyle- 

 shire ; Loch Katrine, Perthshire ; Loch Linnhe, Inverness-shire. 



4. P. perforata, Ach. Meth. (1803) p. 217.— Thallus suborbicidar, 

 membrau.-iccoiis, imbricato-lobed or lobato-Iaciniate, smooth, mi- 

 nutely reticulato-rimulose, whitish or glaucous-white, beneath 

 brownish-black or black, with black dense rhizinie ; lobes crenato- 

 biuuate or siiiuato-divided, often white-sorcdiate and occasionally 



ciliate at the margins (KiJ''|!*^''''*Jj' , , CaCl~). Apothecia 



^ ^ +yellow, tben rusty red, — ^ '^ 



moderate, perforate in the centre, badio-reddish or brownish-red, the 



margin entire; spores 0,011-lS mm. long, 0,007-11 mm. thick. — 



Sm. Eug. Fl. V. p. 204 pro parte ; Cromb. Lich. Brit. p. 32 ; Leight. 



Lich. Fl. p. 134, cd. 3, p. 123. — Lic/un perfijnitds, Wulf. in Jacq. 



Coll. i. (17SG) p. IIG, t. 3 : Eng. Bot. t. 2423"(mid. tig.). FanneUa 



reticulata, Tayl. in Mack. Fl. Hib. ii. p. 148. Pariuelia perlata, 



j3. cilidta, Mudd, Man. p. 1J2 pro parte. Lichenoides rjlaucum. foli- 



orum laciniia crinitis, Dill. Muse. 149, t. 20. f. 42 a. — Brit.tLcts.: 



Cromb. n. lU : Larb. Lich. Hb. n. 250. 



Closely allied to P. jnrla/a, but with the appearance of P. liliuta, 

 which, as alieady intimated, has been frequently confounded with it by 



