238 I.TCnT-NACF.T. [I'ARMEUA. 



mouth, Dolo-ellv, and near Hnrlefh, Mevionetlisliire ; Island of Inde^ea : 

 Oswestry, Sluopshire : near Kendal. Westmoreland. New Galloway, Kirk- 

 cudbrifrhtsliire : liarraldine, Arpylesliire : I.och Linnlie, Inverness-sliire. 

 ( 'astlebernard Park, r.audon, co. Cork ; Killarn-y, co. Kerry: Letterfrack, 

 Counemara, co. Galway. 



Yar. ft. rugosa Cromh. Grevilka, xv. (1887) p. 75. — Thallua 

 somewhat expanded, the lohcs broadly linear at the circuraferenco, 

 more or less rugose. Apothecia with the thalline margin at length 

 nxgose: spores 0,013-15 mm. long, about 0,008 mm. thick. —Par- 

 melia tiliacea var. rvf/osa Leight. Lich. Fl. p. 133. P. hrvif/ata var. 

 riigosa Leisht. Lich. Fl. ed. 3, p. 128. ParmeJia rurjosa Tayl. in 

 Mack. Fl.Hib. ii. (1836) p. 145. 



A well-marked variety, agreeing with the type in the reaction of the 

 medulla, but ditiering in the rugose ihallus and margin of the apothecia, 

 and in the broader (less revolute) lobes, which are rarely and sparingly 

 sorediiferous at the apices. The apothecia are very rare. 



Hah. On rocks in maritime distiicts. — Disir. Local in S.W. England, 

 N. AVales, the "\V. Highlands, Scotland, and 8.W. Ireland.— B. M. : Corn- 

 worthy, Devonshire : The Lizard, Cornwall ; IWmouth (fruit), Dolcrelly, 

 and Aberdovey,Merioiiethshire: Llanberis, Carnarvonshire. Barcaldine, 

 Argyleshire. 'Dankerron (fruit), co. Kerry. 



Form panniformis Cromb. Grevillea, xv. (1887) p. 75. — Thallus 

 more or less rugose ; laciniae short, narrowly dissected and congested. 

 Apothecia not seen. 



Forms a somewhat densely imbricate crust, from the short lacinias 

 being much divided and aggregate. It occm's only sterile. 



Hah. On the trunks of old trees, near the base, in maritime and upland 

 ^,.<^cts. — Distr. Local and scarce, in S.W. Enghind and the W. Highlands, 

 Scotland. — B. M. : Pentire, Cornwall. By Loch Liuuhe, Inverness- 

 shire. 



Yar. y. concentrica Cromb. GreviUea, xv. (1887) p. 75. — Thallus 

 panniform, free, spherical, growing in involved concentric layers. 

 Apothecia not seen. — ParmeJia tiliacea var. concentrica Leight. Lich. 

 Fl. p. 133, ed. 3, p. 122. Parmdia lavigata var. concentrica Cromb. 

 Lich. Brit. p. 33. Parmelia sinuosa y. concentrica Mudd, Man. 

 p. 96. Parmelia sa.ratill'i var. concentrica Leight. in Garden. Chron. 

 1856, pp. 84, 172. ParmeJia simiosa var. erratica Linds. Mem. 

 Sperm, p. 2l'6.—Brit. Kis. : Leight. n. 232. 



This curious variety occurs on the gi'ound in a free condition as small 

 globrdar balls. There is no reason to suppose that it is free ab initio, but 

 that, after being detached, it assumes this form from accidental circum- 

 stances {cfr. Cromh. Journ. P>ot. 1872, p. ."lO?). Though it has been re- 

 ferred to different species, the thalline reactions, in conjunction with the 

 general aspect of the plant, sIkiw that it belongs to J', rero/ufa, produced 

 no doidjt bv a panniform condition of this species. 



Hah. On the ground in maritime and upland tracts. — iJi.sfr. Extremely 

 local and rare in S.W. Englnnd.— B. M. : Melbury Hill, near Shaftes- 

 bury, Dorsetshire. 



