88 HERNT I.VNf;K. M.-N. Kl. 



Usunlly fcrlili-, Iml lin- .ipi ithccia arr- otun iiioihid. Spores elongato- 

 ellipsoid, sliglitly curved, vvitli thin <(ll-vvall, 13 - 15 x. 5 — 6 p. (Tm. Vh. 

 Scand. p. 166: 12 17 " 4 6, Nm.. Scand. p. 114: 13 — 16 .-' 5 6;/). 



2. Gyrophora rugifera (Xvl.i Tm. Vh. 



Map XI, 4. 



'Norvegia' (M. N. IÎ1..I. 



I hir(L 1 lardangcr\id(la: I laakahcllcrn (Jl.), Voss: Graasiden iM. .\. IjL.I, 

 Finse: Kirkesdornuten (Nordu.I. 



Opl. Rondane (Zett.), Laurgaaixl (Linds.). 

 Sortr. Storsylen (SmitiiI. 



On very high mountains (I have not seen Lindsay's plants from 

 Laurgaardl. At Kirkesdornuten I have seen it covering a precipice (like 

 G. cirrliosa on maritime rocks on the south coast). The snow had brought 

 many plants down, and placed them in heaps at the base of the precipice. 



Owing to its difficuldy accessible stations it may have a wider distribu- 

 tion than here indicated, l?ut it is surely rare in our country. 



H ARM AND describes G. rugifcra as a small plant: Thalle peu dévelloppé, 

 1.5 — 3 cm. (Lieh. France p. 691). Our plants are very large (up to 15 

 cm.), and firm of texture. They are almost naked at the centre, otherwise 

 densely rhizinose, rhizinae as well as the lower side reddish (like G. 

 crustulosa), but darker towards the margin. 



Well fertile, apothecia sessile or subsessile, crenate or incise, not gyrosc ; 

 old apothecia large, crenate or incise, often fibrillose. Spores well 

 developed (in young apothecia), 10.5 — 13 >< 7 — 10 \j.. 



Pycnides depresso-globose, large: 250 — 400 x 200 — 220 \i.\ perifulcrium 

 + obscurate. Pycnoconidia straight, small, 3.5 — 4 \i.. 



Amorphous stratum of the thallus thin and uneven, if developed. 

 Upper cortex almost uncoloured, + refractive, very uneven (20 — 25 — 80 jx), 

 corresponding to the 'protuberances' of the gonidia and to the rugi of the 

 thallus. Gonidial stratum continuous, but very uneven, with 'protuberances' 

 advancing almost to the surface, especiall}- in the rugi of the thallus. 

 Medulla white and loosely contexted towards the margin, reddish and of 

 a firmer texture towards the centre. 



Lower cortex usually well set ofii" from the medulla, 50 — 100 [x, 

 uncoloured or somewhat obscurate at the exterior part, typicall}^ plec- 

 tenchymatous, of the usual structure: hyphae at the interior parts more 

 parallel to the surface, at the exterior part more perpendicular and con- 

 strictedly septate. 



All the Norwegian specimens which I ha\"e seen, are stipitate and 

 fibrillose var. stipitata (NvL.), but the stalk is differently developed, from 



