Pi. cell.aph. 6. SARCOTHALAME/., 140. Periph. 515 
10. Peripherostoma sambuci. — Elder-tree peripherostome. 
Thallus flat, grayish, soft; outside black; thece pro- 
minent. 
Sphezria sambuci, Persoon Syn, 15. 
On elder-trees. 
11. Peripherostoma parallelum. Parallel peripherostome. 
Thallus nearly smooth, blackish; thece embedded. 
Spheria parallela, Sowerby Fungi, 374, 4. 
12. Peripherostoma populi. Poplar peripherostome. 
Thallus scattered, orbicular, on poplar leaves. 
Spheria populi, Sowerby Fungi. 374, 2. 
13. Peripherostoma ulmi. Elm-tree peripherostome. 
Thallus scattered, orbicular; on the leaves of ulmus 
campestris. 
Spheria ulmaria, Sowerby Fungi, 374, 3. 
© 14. Peripherostoma depressum. Flattened peripherostome. 
Thallus orbicular, flat, black, inside white; thece not 
prominent. 
Spheria depressa, Sowerby Fungi, 216. 
Variolaria punctata, Bulliard Champ. 432, 2. 
On rotten sticks. 
15. Peripherostoma arundinacea. Reed peripherostome. 
Thallus oblong, long, flat, black; thece in a single lon- 
gitudinal row. 
Spheria arundinacea, Sowerby Fungi, 336. 
On the stalks of arundo vallatoria. 
VII. 141. PORONIA. Willdenow. Poronia. 
Thallus \eatherlike, stipitate, cupshaped; centre orbi- 
cular, truncated; thece scattered, immersed vertically in 
the thallus. 
Poronia Gleditschii. Gleditsch’s poronia. 
Thallus cupshape ; stipes sooty; centre snow-white: 
thece scattered, like black spots. 
Spheria truncata, Bulliard Champ. 127, 2. 
Spheria punctata, Sowerby Fungi, 54. 
Spheria 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. 
2L 2 
