ruisciA.] I'UYSCiEi. 3u7 



L'niv. (1810) p. 474. Lichenuidcs (jlaucum orbiculare, 8f(jmaiti« 

 lutiuscuJis, sculcUis nifjris Dill. Muse. 177, t. 24. f. 71 b. 



The milk-white pruina with Avhich the thallus and apothecia are 

 Covered is ofteu but little dense. It has somewhat the appearance of 

 subsp. pitijrea, from which it at once differs in the absence of soredia. 

 The apothecia ai"e rare in the British specimens. 



Hub. On trunks of trees in maritime and mountainous districts. — 

 Distr. Very local and scarce in S. Ku>rlaud, the Central Grampians, 

 Scotland, and S.W. Ireland.— B. M. : Isle of Wight. Craig Tulloch, 

 Blair Athule, Perthshire. Adare, co. Limerick. 



Yar. jy. subvenusta Nyl. Bull. Soc. Linn. Xormand. ser. 2, t. vi. 

 (1872) p. 28-5. — Thallus more or less pruinose. Apothecia mode- 

 rate or somewhat large, pruinose, the receptacle crowned at the 

 base. — Phi/scia puJverulenta f. JacinioJata Cromb. Journ. Lot. 1872, 

 p. 358. P. indverulenta var. vcnusta Leight. Lich. Fl. ]). 147 pro 

 parte, ed. 3, p. 136 pro parte. Lichen j^ndverulentus Eng. Bot. 

 t. 2063. Lichai steUaris /3. Lightf. Fl. Scot. ii. p. 824 ; y. Huds. Fl. 

 Angl. ed. 2, p. 534; var. 3, With. Arr. ed. 3, iv. p. 31. Lichenoides 

 scutellis limbo cinereo crisjjo cinctis Dill, in Ear Syn. ed. 3, p. 75. 



Distinguished by the lacinioli or lobules which crown the base of the 

 receptacle, in which respect it is subsimilar to subsp. vennsta. Occa- 

 sionally the thallus also is more or less covered with minute suberect 

 lobules. The apothecia ai"e generally numerous, and, in entire specimens, 

 some have the receptacle nearly or quite naked. 



Hub. On the trunks of old trees in maritime and upland districts. — 

 Distr. Somewhat local and scarce in England ; rare in S. Scotland and 

 amorg the S. Grampians. — B. M. : Xoi"«ich, Norfolk : Hentield and 

 Glynde, Sussex ; Eespring and near Penzance, Cornwall ; Kemble, Wilt- 

 shire; Windsor Great Park, Berkshire: near Cambridge; Oswestry, 

 Shropshii-e : Levens, Westmoreland. Ravelrig, near Edinburgh ; Fin- 

 larig, Killin, Perthshire. 



Tar. y. angustata Xyl. Act. Soc. Linn. Bord. ser. 3, i. (1856) 

 p. 308. — Thallus somewhat small, pale greyish-red or subcervine, 

 cpruinose ; lacinite narrow, discrete, beneath densely blackish-hispid 

 with rhiziniae. Apothecia rather small, naked or piuinose, brown 

 or brownish-black. — Cromb. Lich. Brit. p. 38 ; Leight. Lich. Fl. 

 p. 147, ed. 3, p. 135. — Borrera pidveridenta (o. angustata Mudd, 

 Man. p. 110. Lichen anrjustatus Hoflm. Enum. (1784) p. 77, t. 11. 

 f. 2. 



The narrow discrete laciniae and the numerous rhizinse render this a 

 well-marked variety. In its typical condition, as noticed by Acharius, 

 Lich. Univ. p. 474, the laciniae are ccntinuous fiom the centre to the cir- 

 cumference ; but intei mediate states occur in which the lacinia? are shorter 

 and not so continuous, as is usually the case in Britain. The apothecia 

 in our specimens are not very numerous. 



Hub. On the trunks of old trees in upland districts. — Lidr. Local and 



x2 



