Pl.cell. aph. 6. SARCOTH ALAMEiE. 140. Periph. 515 
10. Peripherostoma samluci . Elder-tree peripherostome. 
Thallus flat, grayish, soft; outside black; thecce pro- 
minent. 
Sphaeria sambuci, Persoon Syn. 15. 
On elder-trees. 
11. Peripherostoma parallelum . Parallel peripherostome . 
Thallus nearly smooth, blackish ; thecce embedded. 
Sphaeria parallela, Sowerby Fungi, 374,4. 
12. Peripherostoma populi. Poplar peripherostome . 
Thallus scattered, orbicular, on poplar leaves. 
Sphaeria populi, Sowerby Fungi. 374, 2. 
1 3. Peripherostoma ulmi. Elm-tree peripherostome . 
Thallus scattered, orbicular; on the leaves of ulmus 
campestris. 
Sphaeria ulinaria, Sowerby Fungi, 374,3. 
14. Peripherostoma depressum. Flattened peripherostome. 
Thallus orbicular, flat, black, inside white; thecce not 
prominent. 
Sphaeria depressa, Sowerby Fungi, 216. 
Variolaria punctata, Bulliard Champ. 432, 2. 
On rotten sticks. 
15. Peripherostoma arundinacea. Reed peripherostome. 
Thallus oblong, long, flat, black ; thecae in a single lon- 
gitudinal row. 
Sphaeria arundinacea, Sowerby Fungi, 336. 
On the stalks of arundo vallatoria. 
VII. 141. PORONIA. Willdenow. Poronia . 
Thallus leatherlike, stipitate, cupshaped; centre orbi* 
cular, truncated ; thecce scattered, immersed vertically in 
the thallus. 
Poronia Gleditschii. Gleditsch’s poronia . 
Thallus cupshape ; stipes sooty ; centre snow-white ; 
thecce scattered, like black spots. 
Sphaeria truncata, Bulliard Champ. 127,2. 
Sphaeria punctata, Sowerby Fungi, 54. 
Sphaeria Poronia, Persoon Syn. 15. 
Peziza punctata, Lin. Syst. ed. 15, 1017. 
Poronia Gleditschii, Willd. Berol. 400. 
Sandy places, on horse-dung, rarely on cow-dung. 
2 L 2 
