PANNULARIA.] LECANO-LECIDEEI. 341 



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

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

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

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

 Lioh. Fl. p. IGG, cd. 3, p. 152. Lichen microphifUus Sw. Vet Ak. 

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

 cidea coronata (5. escJiaroidcs 8m. Eng. Fl. v. p. 182. — Brit. Kvs. : 

 Larb. Cae^>a^. 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 tbickish diffract crust. The apothecia are either scat- 

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

 state lecanoroid. 



Sab. On rocks, seldom on the givniud, 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. : Eozel, Island of Jersey ; 

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

 Argyleshire. Connemara, co. Galway. 



Form cheilea Xyl. e.v Cromb. Grevillea, xviii. (1889) p. 43. — 

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

 Apothecia subiunato-sessile, somewhat plane, crowned by the 

 thallus: spores ellipsoideo-oblong, spuriously 1-septate. — Pannaria 

 microphylJa var. cheilea Xyl. Syn. ii. p. 35. Pannaria cheilea Xyl. 

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

 Lich. Fl. p. 169, ed. 3, p. 155. MassaJongia 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 biatoriue, and in the spuriously septate spores. It is scarcely, ac- 

 cording to Xylander in litf., to be considered as a distinct variety, but only 

 as a form. 



Hab. On damp schistose rocks in maritime disti-icts. — iJi^tr. Very local 

 and scarce in the S."\V. Highlands of .Scotland and in S.W. L-eland. — 

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

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



3. P. triptophylla Xyl. e.c Stiz. St. Gall. Xat. 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 biatoriue, 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-S mm. thick ; hymeuial gelatine intensely bluish 

 with iodine. — Cromb. GreviUea, xii. p. 58. — Pannaria triptoj^hylla 

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

 Lich. Brit. p. 42. Lepidoma triptophijllnm Gray, Xat. Arr. i. p. 462. 

 Lecidea microphi/lla Hook. Fl. Scot. ii. p. 41. Placodiuin micro- 

 phjlh.nn Sm. Eng. Fl. v. p. 108. Par)nelia phunhea f . mirrophylla 



