BRITISH PYRENOMYCETES. 
35 
2. H. argillaceum, Pers., Sacc. Syll. 1337 ; Hdbk. 2389. 
On dead ash branches. Apethorpe, Weybridge, Batheaston, 
North Wootton. 
3. H. fuscum, Pers., Sacc. Syll. 1368 ; Hdbk. 2390. 
On hawthorn, hazel, &c. Common. 
b. Stroma black. 
4. H. multiforme, Fr., Sacc. Syll. 1376 ; Hdbk. 2386. 
On birch. Common. 
5. H. majusculum, Cke., Sacc. Syll. 1369 ; Grev. vii, 80. 
On rotten wood. Apethorpe, Norths. 
6. H. cohserens, Pers., Sacc. Syll. 1370 ; Hdbk. 2388. 
On dead branches of beech, &c. Darenth, Downton. 
B. Clitoxylon. Stroma pulvinate , more or less convex , not 
effused. 
7. H. marginatum, Schw., Sacc. Syll. .1414 ; Hdbk. 2387. 
On dead wood. Chatsworth, Glamis. 
C. Placoxylon. Stroma broadly effused, 
a. Stroma coloured , not black. 
8. H. atropurpureum, Fr. } Sacc. Syll. 1433 ; Hdbk. 2392. 
On rotten wood. Appin, Bishop’s Wood. 
9. H. rubiginosum, Pers., Sacc. Syll. 1434 ; Hdbk. 2391. 
On decorticated trunks and branches. Norths. 
10. H. miniatum, Cke., Sacc. Syll. 1432 ; Grev. vii, 80. 
On decorticated wood. Shere. 
b. Stroma black. 
11. H. serpens, Pers., Sacc. Syll. 1448 ; Hdbk. 2393. 
On dead elder, beech, &c. King’s Cliffe, East Bergholt, 
Epping. 
D. Endoxylon. Stroma more or less immersed in the matrix. 
12. H. udum, Pers., Sacc. Syll. 1485 ; Hdbk. 2394. 
On rotten branches. King’s Cliffe, Wothorpe, Weybridge, 
Maxwell’s Fields, Kidbrooke. 
13. H. semi-immersum, Nke., Sacc. Syll. 1487. 
On rotten wood, not uncommon. 
Fam. 3. DOT HIDE ACEiE, Fr. 
Sub.-Fam. I. DOTHIDEOIDEI. 
Gen. 1. PHYLLACHORA, Feld. Stroma somewhat clypeate 
or shortly effused, for the most part growing on leaves. 
Sub-Gen. Euphyllachora. Stroma shortly effused, usually 
epiphyllous. 
a. Sporidia continuous , hyaline. 
1. P. ulmi (Duv.y, Sacc. Syll. 5091 ; Hdbk. 2412. 
On elm leaves. Common. 
