BRITISH SPH^EROPSIDEiE. 
105 
553. Phleospora ulmi, Fr. Sacc. Syll. 3138. 
On elm leaves. Chislelmrst ; Forden ; Shere (F. B. i., 207 ; 
ii., 29) ; Hereford ; Glasgow ; Moray ; Tay ; Forth ; Tweed ; 
Solway ; Clyde. 
554. Fhleospora oxyacanthae, Kunze. Sacc. Syll. 3139. 
On hawthorn. Albury (F. B. i., 201); Bungay; Appin ; 
Glamis. 
Fam. 2. NECTRIOIDEiE, Sacc. Syll. hi., 613. 
Perithecia and stroma (when present) fleshy or waxy, brightly 
coloured, globose, or rarely hysteriform, or somewhat cup-shaped. 
Sporules various, hyaline. 
Gen. 1. ZYTH2A, Fr. 
Perithecia erumpent or subsuperficial, globose, more or less dis- 
tinctly papillate, waxy or soft, whitish, rosy, reddish or orange. 
Sporules ovoid or oblong, continuous, hyaline. 
555. Zythia leucoconia ( B . fy Br.), Sacc. Syll. 3298. 
On beetroot. King’s Cliffe. 
Gen. 2. POLYSTIGMIKA, Sacc. 
Stroma growing on leaves, subdiscoid, convexo-plane, rather 
fleshy, bright reddish, inany-celled within. Sporules filiform, con- 
tinuous, hyaline. 
556. Polystigmina rubra ( Desm .), Sacc. Syll. 3326. 
On leaves of Prunus domestica and P. spinosa. Lampeter ; 
East Bergholt : Bungay ; Thirsk. 
Fam. 3. LEPTOSTROMACEiE, Sacc. Syll. hi., 625. 
Perithecia more or less distinctly dimidiate, scutiform, astomous 
or ostiolate, or splitting longitudinally, membranaceous or carbona- 
ceous, black, erumpent or superficial. 
Gen. 1. LEPTOTHYRIUM, Kunze. 
Perithecia dimidiate, scutiform, membranaceo-carbonaceous, black, 
astomous, or splitting, then circumscissile. Sporules ovoid-oblong 
or fusiform, continuous, hyaline. 
557. Leptothyrium periclymeni, Desm. (pictam, B.), Sacc. Syll. 
3330. 
On honeysuckle leaves. Twycross ; Glamis. 
558. Leptothyrium alneum (Lev.), Sacc. Syll. 3333. 
On alder leaves. Edinbro’ (F. B. i., 432); Perth. 
559. Leptothyrium quercinum ( La&ch .), Sacc. Syll. 3340. 
On oak leaves. Darenth. 
560. Leptothyrium castaneae, Spr. Sacc. Syll. 3341. 
On chestnut leaves. Shere; Darenth; Lyndhurst. 
561. Leptothyrium medium, Che. Grev. xm., 98» 
On oak leaves. Gomshall. 
