PANNTJLARIA.] LECANO-LECIDEEI. 341 



ally pale or whitish ; spores ellipsoid, simple, 0,010-17 mm. long, 

 0,005-8 mm. thick ; hymenial gelatine somewhat bluish and then 

 wine-red with iodine. Cromb. Grevillea, xiii. p. 43. Pannaria 

 microphylla Mudd, Man. p. 123 ; Cromb. Lich. Brit. p. 42 ; Leight. 

 Lich. Fl. p. 166, ed. 3, p. 152. Lichen microphyttus Sw. Vet Ak. 

 Handl. (1791) p. 301. Lichen escharoides Eng. Bot. t. 1247 ? Le- 

 cidea coronata ft. escharoides Sm. Eng. Fl. v. p. 182. Brit. Exs. : 

 Larb. Csesar. n. 71 ; Lich. Hb. n. 89. 



Closely allied, as already intimated, to the preceding, but with an in- 

 ferior type of thallus and smaller spores. The thallus is often effuse, and 

 at times forms a thickish diffract crust. The apothecia are either scat- 

 tered or approximate, somewhat plane or usually convex, rarely in a young 

 state lecanoroid. 



Hnb. On rocks, seldom on the ground, in maritime districts. Distr. 

 Local and rare in the Channel Islands, S.W. England, the S.W. High- 

 lands of Scotland, and N.W. Ireland. B. M.: Rozel, Island of Jersey ; 

 Islands of Sark and Guernsey. Near Penzance, Cornwall. Barcaldine, 

 Argyleshire. Connernara, co. Galway. 



Form cheilea Nyl. ex Cromb. Grevillea, xviii. (1889) p. 43. 

 Thallus dark-cervine, the squamules concolorous at the margins. 

 Apothecia subinnato-sessile, somewhat plane, crowned by the 

 thallus ; spores ellipsoideo-oblong, spuriously 1-septate. Pannaria 

 microphylla var. cheilea Nyl. Syn. ii. p. 35. Pannaria cheilea Nyl. 

 in Mudd, Man. (1861) p. 126; Cromb. Lich. Brit. p. 43; Leight. 

 Lich. Fl. p. 169, ed. 3, p. 155. Massalongia cheilea Mudd, Man. 

 p. 126. 



Differs from darker states of the type in the margins of the squamules 

 not being whitish, in the apothecia being lecanoroid, though often at 

 length biatorine, and in the spuriously septate spores. It is scarcely, ac- 

 cording to Nylander in litt.jto be considered as a distinct variety, but only 

 as a form. 



Hob. On damp schistose rocks in maritime districts. Distr. Very local 

 and scarce in the S.W. Highlands of Scotland and in S.W. Ireland. 

 B. M. : Loch Creran, Barcaldiue, Argyleshire. Western Blasquet Island 

 and Blackwater Bridge, co. Kerry; Kilkee, co. Clare. 



3. P. triptophylla Nyl. ex Stiz. St. Gall. Nat. Ges. 1882, p. 336. 

 Thallus thinly microlepideo-granulose or minutely and crowdedly 

 coralloideo-squamulose, greyish-brown or leaden-greyish ; bypo- 

 thallus bluish-black or blackish. Apothecia biatorine, small, plane 

 or convex, brown or reddish-brown, usually paler at the margin, 

 internally brownish-black ; spores ellipsoid, simple, 0,012-19 mm. 

 long, 0,006-8 mm. thick ; hymeuial gelatine intensely bluish 

 with iodine. Cromb. Grevillea, xii. p. 58. Pannaria triptophylla 

 Leight. Lich. Fl. p. 167, ed. 3, p. 152 ; Mudd, Man. p. 123 ; Cromb. 

 Lich. Brit. p. 42. Lepidoma triptophyllum Gray, Nat. Arr. i. p. 462. 

 Lee-idea microphylla Hook. Fl. Scot. ii. p. 41. Placodium micro- 

 phyllum Sm. Eng. Fl. v. p. 198. Fannelia plunibea ?. microphylla 



