366 “DR. LINDSAY ON WEST-GREENLAND LICHENS. 
PLATE L. 
Fig. 1. Lecanora tartarea, L., and its parasite 
Verrucaria tartaricola, Linds., God- 
havn: a, perforate apothecium of the 
Lecanora, and section thereof; b, spo- 
ridia; c, d, warts bearing the parasitic 
perithecia (c) and spermogonia (d); 
e, section of said perithecia; f, asci, 
with young sporidia; g, free sporidia. 
Fig. 2. Parasite (Verrucaria Campsteriana, Linds.) 
on var. gonatodes, Ach., Dlartlek gla- 
cier: a, sections of perithecia; 5, sec- 
tion of hymenium under iodine ; c, free 
sporidia. 
Fig. 3. Parasite on L. tartarea, Braemar: a, sec- 
tion of thalline warts, and the parasitic 
perithecia. 
Fig. 4. Parasite on var. frigida, Sw., Lyngemar- 
ken: spores. 
Fig. 5. L.oculata, Ach., and its parasites, Illartlek : 
a, punetiform parasite, with its Torula 
spores (b) and stylospores (c); d, Per- 
tusaria paradoxa, Linds.; e, section 
of one of its perithecia; f, section of 
hymenium; g, free sporidia. 
. oculata (sub Isidium, Ach.), named 
by Acharius himself, in Herb. Kew: 
sporidium, 
Fig. 7. Lecidea fuscescens, Smrf., Nyl. Exs., 135. 
i í a, section of hymenium (one ascus 
under iodine) ;.d, free sporidia. 
Fig. 8. Lecanora bryontha, Ach., Illartlek : one- 
| spored asci (one under iodine); a, oil- 
globules. 
Fig. 9. L. ventosa, Ach., with its parasite, Loch- 
nagar: a, section of hymenium; 5, sec- 
tions of perithecia ; c, spores. 
Fig. 10. L. ventosa, Lochnagar, bearing the para- 
_sitic Spheria ventosaria, Linds. 
Fig. 11. L. ventosa, Spittal of Glenshee: a, sec- 
tions of apothecium of the Lecanora, 
and of the parasitic perithecia (Sphe- 
ria). : 
= 
Eoad 
da 
D 
- 
Fig. 12. Sporidia of Spheria ventosaria, Linds. : 
Glenshee. 
Fig. 13. Lecanora ventosa, Schær. Exs. 320: ste- 
rigmata and spermatia. 
Fig. 14. Sporidia of Spheria ventosaria, Jakobs- 
havn. 
Fig. 15. Spermogonium on an apothecium of Le- 
canora subfusca, L., Corramulzie. 
Fig. 16. Two parasites on apothecia of L. albella, 
. Pers., Morchone : sporidia. 
Fig. 17. Pycnidia on L. subfusca, Kinnoull Hill : 
basidia and stylospores. 
. Pyenidia of L. albella, Pers., Hepp 187 : 
section showing stylospores and ba- 
sidia. . 
Fig. 19. Spermogonia on L. subfusca, Dunglass : 
sterigmata and spermatia. 
Fig. 20. Pycnidia on L. subfusca, Scotland : sty- 
lospores. 
Fig. 21. Spermogonia on, or accompanying, L. 
subfusca, Carrigaloe: sterigmata and 
spermatia. : 
Fig. 22. L. polytropa, Ehrh., Egedesminde : spo- 
| ridia. 
Fig. 23. Thelidium epipolytropum, Mudd, para- 
sitic on L. polytropa, Ben Lawers: 
a, asci of the Thelidium (one ascus 
under iodine), containing sometimes 4, 
sometimes 8 sporidia; 5, free sporidia 
(one under iodine) ; c, ascus of L. po- 
lytropa; d, sporidia of L. polytropa. 
. L. polytropa, var., Scotland, Carmichael; 
referred by Nylander to L. alpicola !, 
by other annotators to L. frustulosa ; 
in Herb. Kew: sporidia. 
Fig. 25. L. polytropa, Nyl. Exs.: sporidia. 
Fig. 26. Thelidium epipolytropum, Mudd, Brae- 
mar: ascus and sporidium. 
Figs. 97, 28. Lecanora sophodes, Ach., Jakobs- 
havn and Egedesminde: sporidia. 
Fig. 29. L. sophodes (form) Illartlek: a, apo- 
thecium and section; 5, sporidia. 
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