299 
XII. Verruearii. Thallus erustaceus. Apothecium: exei- 
pulum proprium, sphaericum, vel ipsi thallo vel verrucae thallodeae 
iusidens, thalamium gelatinosum includens. 
25. Segestria Fr. Apotheeium: exeipulum ceraceo-membrana- 
ceum, coloratum, apice papillula vel ostiolo instructum, tbalamium 
gelatinosum servans, — Pyrenula umbonata Ach. 
26. Verrucaris Wigg. Apothecium: exeipulum carbonaceum, 
apice papillula vel ostiolo instructum, thalamium gelatinosum servans 
— V. nitida W eig. 
27. Thrombium Wallr. Apothecium: exeipulum corneo- car- 
bonaceum, apice papillula vel ostiolo instructum, thalamium gelati- 
nosum projiciens, tandem collabens patellulamgue saepe corrugatam 
mentiens. — Verrue. epigaea Ach. 
28. Limboria Ach. Apotheeium: exeipulum corneo - carbona- 
eeum, primo clausum, dein apice stellatim dehisceus, thalamium ge- 
latinosum ? servans. — Limberia sphinetrina Duf. 
XIV. Pertusarit. Thallus erustaceus. Apothecium: etei- 
pulam; verruca peculiaris thallodea, thalamium includens. 
29. Chiodecton Ach. Apothecium: excipulum simplex, e ver- 
ruca peculiari subthallodea, pulverulenta formatum , a protuberantibus 
thalamiorum ostiolis atro-punctatum. — Chiod. myrticola Fee. (Syn- 
cesia albida Tayl.) 
30. Pertusaria DC. Apothecium: excipulum simplex, e ver- 
ruca pecnliari thallodea compacta formatum, a protuberantibus thala- 
miorum segregatorum ostiolis impresso-punetalum , vel, confluentihus 
istis, in seutellam saepe radiato-striatam dehiscens. — Lich. pertu- 
sus Linn. 
#1. Thelotrema Ach. Apothecium: exeipulum duplex; exterius 
e verruca peculiari thallodea compacta formatum, apiee dehiscens; 
interius proprium, meinbranaceum,, apice connivens, lacero.debiscens, 
basi sua thalamium discoideum amplecteus. — Lich. lepadinus Ach. 
XV. Endocarpei. Thallus froudosus velsquamulosus. Apo- 
thecium: ipsi thallo transversim innatum; exgipulum simplex, menm- 
branaceum , ostiolo tandem elongato et indurato in adversa thalli pa- 
gina protuberans; thalamium gelatinosum, carneo-rubrum , tandem 
afrum, 
32. Endocarpon Hedw. Lich. miniatus Linn. 
Appendix. v. p. 295. 
