293 
propriam, corneo-carbonaceum, apice papillula vel ostiolo instructum, 
thalamium gelatinosum servans. Thallus erustaceus. 
28. Thrombium Wallr. Apothecium: exeipulum sphaericum, 
proprium, corneo-carbonaceum, apice papillula vel ostiolo instructum, 
thalamium gelatinosum projiciens, tandem collabens, patellulamgue 
eollapsam mentiens. T’hallus erustacens. 
29. Limboria Ach. Apothecium: excipulum sphaericum, pro- 
prium,, corneo-carbonaceum, primo clausum, dein apice stellatim de- 
hiscens, tbalamium gelatinosum? servans. Thallus erustaceus. 
Ordo 2. Endocarpei. 
A, Thallus cerustaceus. 
30. Chiodecton Ach. Apothecium: exeipulum simplex, e ver- 
fuca peculiari, subthallodea, pulverulenta formatum, a protuberanti- 
bus thalamiorum ostiolis atro-punctatum. 
31. Pertusaria DC. Apothecium: exeipulum simplex, e ver- 
Fuca peculiari, thallodea, compacta formatum, a thalamiorum segre-. 
gatorum ostiolis profuberantibus impresso-punctatum, vel, confuenti- 
bus istis, in scutellam saepe radiato-striatam dehiscens. 
32. Thelotrema Ach. Apothecium: excipulum duplex; exterius 
e verruca peculiari, thallodea, compacta formatum, apice dehisceus; 
interius proprium, membranaceum, apice lacero dehiscens, connivens, 
basi sua thalamium discoidenm amplectens. 
B. Thallus frondosus vel squamulosus. 
33. Endocurpon Hedw. Apothecium sphaerieum, ipsi thallo 
fransversim innatum: exeipulum simplex, membranaceum , ostiolo tan- 
dem elungato et indurato in adversa thalli pagina protuberans; (ha- 
lamium gelatinosum,, carneo-rubrum, tandem atrum. 
Appendix. 
34. Lepra Hall. T’hallus leproso-pulverulentus, organa pecu- 
liaria nulla offerens. 
35. Spiloma Ach. Tüallus leprosus, gonidiis discoloribus, in 
pulvinnlos nudos aggregalis, distinetus. 
36, Coniorarpon DC. Thallus lepresus, gonidiis distinetus 
discoloribus, in pulvinulos membrana thallodea tenuissima ad latera 
dehiscente tectos aggregatis. 
37. Siphula Fr. Thallus: stipites subeylindriei solidi, apici- 
bus tumentibus, subconcoloribus. 
Ca rollarium. 
Plantae byssacene vel eollemaceae. 
