EUOPSIS. | PYRENOPSEI. 23 
Lich. Fl. ed. 3, p. 15. Collema heemaleum, Somm. Suppl. Fl. Lapp. 
(1826) p. 117. 
The thallus occasionally occurs in small patches intermixed with other 
crustaceous lichens, but generally by itself, and spreading to a moderate 
extent over the substratum. Sometimes a sterile and less developed, 
though very similar, plant occurs which probably belongs to this species. 
The apothecia are usually numerous and crowded, becoming when old 
convex and darker in colour. 
Hab. On mica-schist rocks in subalpine and alpine tracts— 
Distr. Local and scarce among the 8.W. Grampians, Scotland and 
in N.W. Ireland.—B. M.: Ben Cruachan, Argyleshire; Ben Lawers, 
Perthshire. Connemara, co. Galway. 
2, E. granatina Nyl. Flora, 1875, p. 8363.—Thallus effuse, thin, 
granulose, rimoso-diffract, reddish-brown or rubricoso-reddish, the 
granules somewhat plane, opaque, ruguloso-nodulose, contiguous, 
rotundato-difform. Apothecia small, shining, several in each thalline 
granule, subconcolorous, whitish within, the margin thin, entire ; 
spores simple or spuriously 1-septate, 0,009-12 mm. long, 0,0045- 
55 mm. thick; hymenial gelatine, especially the thece, bluish with 
iodine.—Cromb. Grevillea, xv. p. 10.—Pyrenopsis granatina Nyl, 
ex Cromb. Lich. Brit. p. 2; Leight. Lich. Fl. p. 14, ed. 3, p. 15. 
Lecanora granatina Somm. Suppl. Fl. Lapp. (1826) p. 90. 
Distinguished from the preceding by the paler colour of the thallus, the 
nodulose and irregularly rotundate granules, and the apothecia. In manner 
of growth it is similar to Pyrenopses hematopts, and is little conspicuous 
except in wet weather. The apothecia become at leagth nearly biatorine, 
with excluded margin. 
Hab. On granitic rocks and schistose boulders in alpine localities— 
Distr. Very local and rare among the mountains of N. Wales and the 
S. and W. Grampians, Scotland —B. M.: Llyn Aran, near Dolgelly, 
Merionethshire. Ben Cruachan, Argyleshire; Craig Calliach and Ben 
Lawers,, Perthshire. 
4. PYRENOPSIS Nyl. Mém. Soc. Cherb. iii. (1855) p. 164; 
Syn. i. p. 97 (ofr. Stiz. St. Gall. Nat. Ges. 1876, p. 193).—Thallus 
thinly crustaceous, granulose or subsquamulose, rarely subfruticulose; 
gonimia simple or several in nodulose syngonimia. Apothecia sub- 
lecanoroid or pseudo-pyrenocarpous, small or minute, paraphyses 
simple, slender; spores 8nx, very rarely numerous; hymenial 
gelatine bluish or wine-red with iodine. Spermogones with oblong 
minute spermatia. 
As re-arranged by Nylander, this is a very natural and well-defined 
enus, in consequence of Huopsis having been raised into a separate genus 
and Collemopsis relegated to the Collemacei. It is at once distinguished 
from Euopsis by having the disc of the apothecia subclosed, and by the 
araphyses not being articulate. More recently it has been divided by 
Ayden into two subgenera, viz. Eupyrenopsis Nyl. and Cladopsis Nyl., 
of which only the former occurs in this country. 
1. P, hematopis Fr. fil. N. Ac. Reg. Soc. Se. Upsal. ser. 3, iii. 
(1861) p. 284,—Thallus effuse, crustose, opaque, verrucoso-unequal, 
