DR. LINDSAY ON WEST-GREENLAND LICHENS: D Lar 
44 
PLATE LI. 
Fig. 1. Lecanora sophodes, Lyngemarken : a, sec- 
tion of hymenium under iodine; 5, 
free sporidia. 
Figs. 2, 3. L. cinerea, L., Jakobshavn, Ounartok, 
Atanakerdluk, and Kudlesæt, different 
forms : sporidia. 
Fig. 4. Endococcus erraticus, Mass., parasitic on 
L. cinerea, Scuir-na-Gillean: a, ascus 
with young sporidia, hymenial gela- 
tine under iodine ; b, mature free spo- 
ridia. 
Fig. 5. Lecanora leucoræa, Ach. ; Scher. Exs. 215: 
sporidia. 
Fig. 6. Alien sporidia on L. leucorea, Hepp, 200. 
Fig. 7. Lecidea grenlandica, Linds., Kudlesæt : 
a, portion of psoroid thallus with 
apothecia; 5b, sections of apothecia 
and thallus; c, section of hymenium, 
showing asci with young sporidia and 
paraphyses ; d, tips of paraphyses and 
isolated terminal articulations ; e, free 
sporidia and oil-globules. 
Fig. 8. L. geminata, Flot., Norway: a, asci; b, free 
sporidia. 
Fig. 9. L. geminata, Schær. Exs. 443: ascus and 
sporidium. 
Fig. 10. L. petrea, Wulf, Egedesminde: spo- 
ridium. 
Fig. 11. L. petrea, Jakobshavn : sporidia. 
Fig. 12. Lecidea petrea, Godhavn : sporidia. 
Fig. 13. L. petrea, Martlek: sporidium. 
Fig. 14. L. petrea, Schær. Exs. 183: sporidia. 
Fig. 15. L. petrea, Leight. Exs. 93: sporidia. 
Fig. 16. L. petrea, Leight. Exs. 159: sporidia. 
Fig. 17. L. petrea, Leight. Exs. 184: a, sper- 
mogonia and section; 6, sterigmata 
and spermatia. 
Fig. 18. Verrucaria rimosicola, Leight., parasitic 
on L. petrea, Scher. Exs. 183: ascus 
and sporidia. 
Fig. 19. L. petrea, Ounartok : sporidia. 
Fig. 20. L. atro-alba, Ach.: Atanakerdluk: a, 
section of hymenium; 6, free spo- 
ridia. 
Figs. 21, 22, 23. L. atro-alba, Ach., different 
forms, Jakobshavn, Egedesminde, 
Godhavn: sporidia. 
Fig. 24. L. atro-alba, [sub L. ocellata, FIk. 
* Gryphiz"] in Herb. Kew : sporidia. 
Fig. 25. L. atro-alba, Kerry: sporidium. 
Fig. 26. L. myriocarpa, DC., Illartlek: a, sec- 
tion of hymenium under iodine; 6, 
free sporidia. 
Fig. 27. L. myriocarpa, Jakobshavn : sporidia. 
Fig. 28. L. myriocarpa, Hepp 159: sporidia. 
Fig. 29. L. myriocarpa, form terrestris, Nyl. Exs.: 
sporidia. 
Fig. 30. L. myriocarpa, Anglesea: sporidia. 
PLATE LII. 
Fig. 1. Lecidea insignis, Neg., lllartlek: spo- 
ridia. 
Fig. 2. L. myriocarpa, Egedesminde: a, section 
of hymenium, under iodine; 5, free 
sporidia. 
Fig. 3. Lecidea discoénsis, Linds., Godhavn: spo- 
ridia. 
Fig. 4. L. alpicola, Sch., Jakobshavn: sporidia. 
Fig. 5. L. alpicola, Himalayas, 13,000 ft, in 
Herb. Kew: sporidia. 
Fig. 6. L. alpicola, Schær. Exs. 173: sporidia. 
Fig. 7. Endococcus erraticus, Mass., parasitic on 
L. geographica, L., f. conglomerata, 
Scher. Exs. 577: a, perithecium ; 5, 
asci, young and mature; c, sporidia ; 
d, sporidium of L. geographica. 
Fig. 8. Lecidea geographica, f. atro-virens, Scheer. 
Exs. 623: sporidia. 
Fig. 9. L. geographica, f. pulverulenta, Scher. 
Exs. 624: sporidia. 
Fig.10. Sporidia on the apothecia of L. geogra- 
phica, Leight. Exs. 93. 
Fig. 11. Sporidia of Endococcus erraticus on L. 
geographica, Scher. Exs. 322. 
Fig. 12. Ticothecium stigma, Korb., parasitic on 
L. geographica, Hepp, 153: a, asci 
with young sporidia, under iodine ; 
b, portion of thallus showing the 
