106 
BRITISH SPH^ROPSIDE^E. 
var. castanaecola, Che. Grev. xm., 98. 
On chestnut leaves. Darenth. 
562. Leptothyrium rubi ( [Duly .), Sacc. Syll. 3345. 
On bramble leaves. Darenth. 
563. Leptothyrium acerinum ( Kunze .), Sacc. Syll. 3351. 
On Acer leaves. Shere ; Neatishead, 
564. Leptothyrium asterinum, Berh. Sacc. Syll. 3363. 
On Aster tripolium. Fleetwood. 
565. Leptothyrium vulgare, Fr. Sacc. Syll. 3370. 
On herb stems. Southgate. 
566. Leptothyrium litigiosum, Desm. Sacc. Syll. 3385. 
On ferns. Darenth (F. B. i., 335) ; Westwater ; Shrews- 
bury ; Lyndhurst. 
Gen. 2. PIGGOTIA, B. $ Br. Sacc. Syll. ill., 636. 
Perithecia flattened, unequal, thinly membranaceous, at first 
covered by the very thin cuticle. Sporules oblong or somewhat 
cylindrical, continuous, hyaline or yellowish. 
567. Piggotia astroidea, B. 8f Br. Sacc. Syll. 3387. 
On elm leaves. Highgate ; Stoke Edith ; Twycross. 
Gen. 3. MEL A SMI A, Lev. Sacc. Syll. ill., 637. 
Perithecia dimidiate, plane, astomous or rimose, membranaceous, 
black, stroma effused, becoming blackened, often innate. Sporules 
sausage-shaped, continuous, hyaline. 
568. Melasmia acerina, Lev. Sacc. Syll. 3390. 
On maple leaves. Very common. 
569. Melasmia punctata, Sacc. Syll. 3391. 
On maple leaves. Norfolk ; Koslyn. 
Gen. 4. LEPTOSTROMA, Fr. Sacc. Syll. hi., 639. 
Perithecia dimidiate, flattened, elongated, black, often shining, 
more or less splitting in a hysteriform manner. Sporules ovoid- 
oblong or allantoid, continuous, hyaline. 
570. Leptostroma virgultorum, Sacc. Syll. 3399. 
On bramble twigs . Fineshade ; Bungay; Weybridge; Bar- 
net ; Cotterstock. 
571. Leptostroma scir pinum, Fr. Sacc. Syll. 3427. 
On Scirpus , &c. Berwick. 
572. Leptostroma caricinum, Fr. Sacc. Syll. 3431. 
On Carices. Cloud Wood ; Glamis. 
573. Leptostroma pteridis, Bhr. Sacc. Syll. 3433. 
On Pteris. 
574. Leptostroma hlicinum, Fr. Sacc. Syll. 3434. 
On Pteris. Shrewsbury ; Highgate (F. B. i., 334) ; For- 
den; Appin ; Glasgow; Edinbro’ ; Berwick; Twycross; 
Darenth ; Lyndhurst ; Kew. 
575. Leptostroma herbarum, Link. Sacc. Syll. 3436. 
On herb stems. Kinross ; Berwick. 
