I'ARMELIOPSIS.] PARMELIEI. 203 



1. P. ambigua Xyl. ^"ot. Siillsk. pro F. et Fl. F. Fijrh. n. scr. v. 

 (18GG) p. IJl.-^Thallus stdhito-orbicular, apprcsscd, closely adiiate, 

 imbricato-laciiiiate, opaque, straw-colourod, sulpbureo-sorcdiate ; 

 bcneatb brownish-black; laciiiia; somewhat narrow, plane, multifid 



(K~, CaCl~). Apothecia small, plane or slightly convex, the 

 margin entire or obsoletely crenulate ; spores oblong or ovoid- 

 oblong, often somewhat curved, 0,0U7-11 mm. long, 0,0u2o-35mra. 

 thick. — Cromb. Lich. Brit. p. 37. — Fannelia amhir/Ka Borr. Eng. 

 Bot. 8uppl. t. 279(3 (two lower figs.); Hook. Fl. Scot. ii. p. 55 ; 

 Sm. Eng. FLv. p. 37: Leight. Licli. Fl. p. 127, ed. 3, p. 118. 

 Lichen (nuhi;/uus Wulf. in Jacq. Coll. iv. (170U) p. 23i». Fannelia 

 diffusa Mucid, Man. p. li.'3. — Brit. E,vs. : Leight. n. 373 ; Mudd, 

 n. 75 ; Cromb. n. 14G. 



The thallus is not unlike that of Fannelia Mouf/eotii, and is more or 

 less sprmkled with soredia, which are normally convex and often con- 

 tinent. In this countiy the apothecia are rare. The spermogones, whicli 

 .are more frequent, are very minute, blackish, sparingly scattered, with 

 spermatia 0,018-25 mm. long, 0,005 mm. thick. 



Hab. About the roots of fir trees, and occasionally on old fir pales, in 

 wooded, upland, and mountainous districts. — Distr. Local, though common 

 where it occurs, in S., Ceuti'al, W.. andX. England, X.Wales, the Central 

 Highlands, Scotland ; not seen from Ireland. — B. M. : Ightham, Kent ; 

 Twycross and Gopsall Park, Leicestershire : near Oswestry, Shropshire ; 

 Cwm Bychan, Merionethshire : Ingleby Greenhow, Yorkshire. Killin, 

 Perthshire ; Kinnordy, Forfarshire ; Mar Forest, Braemar, Aberdeen- 

 shire ; Larig Grue, Banffshire ; Rothiemurchus, Inverness-shu'e. 



2. P. aleurites Xyl. Flora, 1872, j). 248.— ThaUus stellato-orbi- 

 cular, closely appressed and adherent, laciniato-lobed, greyish-white, 

 whitish pulveriilento-sorediate ; beneath brownish-black, sparingly 

 fibrillose ; laciniije somewhat convex and rugoso-plicate in the 



centre, plane and linear at the circumference (K_-^'^ °^-, CaCl~). 

 Apothecia small or nearly moderate, concave or somewhat plane, 

 brownish- or reddish-spadieeous, shining, the margin slightly crenu- 

 late : spores oblong or fiisiformi-oblong, usually somewhat cui-ved, 

 0,011-12 mm. long, 0,003-4 mm. thick. — Cromb. Journ. Bot. 1872, 

 p. 234. — Lichen aUurites Ach. Prodr. (1798) p. 117. Farmelia 

 amhigua Borr. Eng. Bot. Suppl. t. 2790 (two upper figs.). Far- 

 melia hyperopta Mudd. Man. p. 91 ; Leight. Lich. Fl. ed. 2, p. 478, 

 cd. 3, p. 119. 



Externallv little different, except in colour, from the preceding. The 

 thallus, which is sometimes dark-greyish, is sprinkled towards the centre 

 with white, scattered, roimdish soredia. In the very lew British speci- 

 mens there are onlv one or two small apothecia with suheutire margui. 

 The spermogones, also rarely j)reseut, have the spermatia 0,0023-30 mm. 

 long, 0,0005 mm. thick. 



Hah. On the trunks of old firs near the roots and on old fir pales in 

 mountainous districts. — Distr. Very local and scarce in the X. Gram- 

 pians, Scotland. — B. M. : Glen Berry and Glen Dee, Braemar, Aber- 

 deenshire ; Larig Gfrue, Baulf shire. 



