36 
BRITISH PYRENOMYCETES. 
2. P. trifolii, Pers ., Sacc. Syll. 5184 ; Hdbk. 2416. 
On living clover leaves. Common. 
3. P. heraclei, Fr. } Sacc. Syll., 5123 ; Hdbk. 2414. 
On living leaves of Heracleum spondylium. Forden. 
4. P. graminis, P., Sacc. Syll. 5132. Hdblc., 2418. 
On half-dead leaves of grass. Common. 
5. P. epitypha?, Cke ., Sacc. Syll. 5143 ; Grev. vii, 79. 
On stem of Typha. King’s Lvnn. 
6. P. junci, Fr., Sacc. Syll. 5144 ; Hdbk. 2417. 
On stems of rushes. Common. 
7. P. caricis, Fr., Sacc. Syll. 5242 ; Hdbk. 2419. 
On leaves of Carices. Forfarshire, Swanscombe Marshes. 
8. P. pteridis, Reb., Sacc. Syll., 5153 ; Hdbk. 2421. 
On fronds of Pteris aquilina. Darenth, Scotland, Wake- 
field. 
b. Sporidia unknown. 
9. P. angelicae, Fr., Sacc. Syll. 5193 ; Gi'ev. vii, 79. 
On leaves of Angelica. 
10. P podagrariae (Roth.), Sacc. Syll. 5194 ; Hdbk. 2415. 
On living leaves of uFgopodium podagrana. 
C. Dothidella. Spoi'idia uniseptate , hyaline. 
11. P. betulina, Fr ., Sacc. Syll. 5256 ; Hdbk. 2413. 
On living leaves of Betula nana. Scotland. 
On Betula alba. 
Gex. 2. DOTHIDE A. Fries. Stroma erumpent, pulvinate. 
A. Bagxisiella. Sporidia continuous , hyaline. 
1. D. rhamni, Mont., Grev. xiii, 66. 
On bark of Rhamnus. Highgate Wood. 
B. Plowrightia. Sporidia uniseptate , hyaline. 
2. 1). ribesia, Pers., Sacc. Syll. 5285 ; Hdbk. 2424. 
On dry branches of gooseberry and red currant. Common. 
C. Eijdothidea. Sporidia uniseptate , brown. 
3. D. sambuci, Pers., Sacc. Syll. 5296 ; Grev. vii, 79. 
On dead branches of elder. 
4. D. tetraspora, B. 4' Br., Sacc. Syll. 5299 ; Hdbk. 2422. 
On dead twigs of Daphne laureola and Ulex. Mossbum- 
ford. Hereford. 
5. D. frangulae, Fckl., Sacc. Syll. 5302 ; Grev. viii, 106. 
On dead branches of Rhamnus frangula. Shrewsbury. 
Gen\ 3. HOMOSTEGIA, Fckl. Parasitic stroma nearly plane, 
or hemispherical, very fragile. 
* Sporidia 3 septate. 
1. H. Piggotii, B. 4' Br., Sacc. Syll. 5338; Hdbk. 2428. 
Parasitic on Paimxelia saxatilis. Llyn Cae. Cader Idris. 
