Fig. 14. 
Fig. 15. 
Fig. 16. 
Fig. 17. 
Fig. 18. 
Fig. 19. 
Fig. 20. 
Fig. 21. 
Fig. 22. 
Fig. 23. 
Fig. 25. 
Fig. 26. 
Fig. 27. 
Fig. 28. 
Fig. 29. 
Fig. 30. 
Fig. 31. 
PYCNIDES OF CRUSTACEOUS LICHENS. 
Arthonia vinosa, Leight., Leighton's Exs. 
No. 224: sterigmata and spermatia. 
A. ilicina, Tayl., Glengariff : ditto. 
A. gregaria, W eig., var. astroidea, Leight., 
Killarney: a, thallus, showing apo- 
thecia and spermogones ; à, section of 
a spermogone ; c, sterigmata and sper- 
matia. 
Ditto, var. marginata, Leight., Leighton's 
Exs. No.250: sterigmata, spermatia, 
and spermogonal filaments. ` 
Stigmatidium crassum, Dub., Castle- 
bernard: a, thallus, showing apothecia 
and spermogones; 4, portion of thal- 
lus, magnified, showing ditto; c, sec- 
tion of thallus, showing ditto; d, 
sterigmata and spermatia. 
Ditto, Leighton's Exs. No. 69: sterig- 
mata and spermatia. 
Ditto, Queenstown: sterigmata, sper- 
matia, and spermogonal filaments. 
Ditto, Rostellan : 
spermatia; 5, basidia and stylospores. 
S. venosum, Sm., Schzrer's Exs. No. 587: 
sterigmata and spermatia. 
S. Hutchinsie, Leight., Leightons’ Exs. 
No. 130 : ditto. 
Mycoporum elabens, Flot., Hepp's Exs. 
No. 230: ditto. 
Endocarpon miniatum, L., var. lepto- 
phyllum, Ach., Ireland: a, thalli, 
showing apothecia and spermogones ; 
b, section of thallus, showing ditto; 
c, sterigmata and spermatia. 
Ditto, var. complicatum, Sw., Skye: ste- 
rigmata and spermatia. 
E. fluviatile, DC., Dunfanaghy: spermatia. 
E. pusillum, Hedw., Schærer’s Exs. No. 
115: sterigmata and spermatia. 
Ditto, Glanmire road : spermatia. 
Verrucaria epidermidis, Ach., var. ana- 
lepta, Ach., Crinan Canal: a, thal- 
lus, showing apothecia and spermo- 
gones; à, section of thallus, showing 
ditto. (Vide also Plate XV. fig. 39.) 
Ditto, var. cinereo-pruinosa, Sch., subvar. 
galactites, DC., Killarney : a, thallus, 
showing apothecia and spermogones; 
a, sterigmata and 
Fig. 38. 
Fig. 41. 
311 
b, two of the spermogones isolated and 
magnified; c, sterigmata and sper- 
matia. 
Verrucaria epidermidis, var. cinereo-pru- 
inosa, subvar. galactites, Malham: 
stylospores. 
Ditto, var. Hepp’s 
Exs. No. 105: a, section of a sper- 
mogone, and of the bark on which it 
is seated ; b, spermatia. 
cinereo-pruinosa, 
. Ditto, ditto, Cork: a, section of an old, 
emptied spermogone: 8, sterigmata 
and spermatia. 
. Ditto, ditto, Leighton’s Exs. No. 197: 
basidia and stylospores. 
. Ditto, form cerasi, Schrad., Scherer’s 
Exs. No. 644: a, section of a spermo- 
gone; b, sterigmata and spermatia. 
. V. Taylori, Salw., Cork: a, thallus, 
showing apothecia, spermogones, and 
pycnides ; b, basidia and stylospores ; 
€, sterigmata and .spermatia ; d, sty- 
lospores of Dichena rugosa, Fr.; e, 
spermatia of Verrucaria (= Pyre- 
nothea) rudis, Borr., Kew herb. 
V. olivacea, Borr., Douglas: a, thallus, 
showing apothecia, spermogones and 
pycnides; 5, section of thallus, show- 
ing ditto; c, spermatia; d, stylo- 
spores. 
Ditto, Leighton's Exs. No. 199: sterig- 
mata and spermatia. 
V. macularis, Wallr., var. fusiformis, 
Leight., Scherer’s Exs. No. 525: sper- 
matia. 
V.umbrosa, Tayl., Kerry ; sterigmata and 
spermatia. 
. V. nitida, Weig., Cork: a, thallus, show- 
ing apothecia and spermogones ; 4, one 
of the spermogones isolated and mag- 
nified; c, section of thallus and sper- 
mogones; d, sterigmata and spermatia. 
. Ditto, Leighton's Exs. No. 27: sterig- 
mata and spermatia. 
Ditto, Scherer’s Exs. No. 111 : ditto. 
. V. cinerella, Flot., Scherer’s Exs. No. 
109: a, section of a spermogone; à. 
spermatia. 
2v2 
