368 
Fig. 13. 
Fig. 14. 
Fig. 15. 
Fig. 19. 
- 
LI 
DR. LINDSAY ON WEST-GREENLAND LICHENS. 
perithecia; c, sterigmata and sper- 
matia. 
Lecidea geographica, f. alpicola, Leight. 
Exs. 129: sporidia. 
L. Vahliana, Linds., Illartlek : sporidia. 
L. Campsteriana, Linds., Atanakerdluk : 
a, portions of thallus, showing the apo- 
thecia; 5, sections of apothecia; c, 
sporidia. 
. L. parasema, Ach., muscicolous form, 
Illartlek : sporidia. 
. L. parasema, Ach., Godhavn: sporidia. 
. L. parasema, Ach., Jakobshavn: a, spo- 
ridia; 5, spores of a parasite. 
L. parasema, Ach., Egedesminde: spo- 
ridia. 
. L. parasema, Ach., Ounartok: a, sec- 
tion of hymenium ; 4, sporidia. 
. L. parasema, Ach., microsporous form, 
Farringdon, Berkshire: sporidia. 
. L. parasema, Ach., f. eleochroma, Ach., 
Nyl. Exs. 140: sporidia. 
. sanguineo-atra, Ach., Illartlek: a, 
portion of thallus with apothecia; 5, 
sections of apothecia; c, sporidia. 
. L. sanguineo-atra, Jakobshavn: spo- 
ridia. 
+ L. sanguineo-atra, Nyl. Exs. 92: spo- 
ridia. 
. L. Friesiana, Linds., Illarilek : spo- 
ridia. 
L. vernalis, L., Lyngemarken: a, sec- 
tion of hymenium, under iodine; 5 
sporidia. 
Fig. 28. Lecidea vernalis, Illartlek : sporidia. 
Fig. 29. L. vernalis, Jakobshavn: sporidium. 
Fig. 30. Pyrenothea grenlandica, Lindsi, Ja- 
kobshavn: a, portion of thallus with 
spermogonia ; 4, sections of thallus and 
spermogonia; c, sterigmata and sper- 
] matia. 
Fig. 31. P. lithina, Leight., Ireland: a, portion 
of thallus with spermogonia; 5, iso- 
lated spermogonia ; c, sections of thal- 
lus and spermogonia; d, sterigmata 
and spermatia. 
Fig. 32. Endocarpon lithinum, Leight. Exs. 98: 
sterigmata and spermatia. 
Fig. 33. Pycnidia on or accompanying Verrucaria 
umbrina, Whlnb., Leight. Exs. 101: 
basidia and stylospores. 
Fig. 34. L. fossarum, Duf.: a, perithecia on or 
associated with Lecidea luteola, Ach., 
Borrer, 1805; b, sporidia: Thornhill, 
1806; both in Herb. Kew. 
Figs. 35, 36. L. elata, Scher. Exs. 229 (= L. 
amylacea, Ach., Nyl.) : ascus and spo- 
3 
ridia. 
Fig. 37. Diplotomma calcareum, Weiss, England : 
a, portion of thallus,showing apothecia 
and pycnidia; 5, sections of apothecia 
and pycnidia ; c, sporidia of the Diplo- 
tomma ; d, stylospores and basidia of 
the pycnidia. 
