68 
BRITISH SPHjEROPSIDEHS. 
Gen. 2. PLACOSPHiERIA, Sacc. Syll. III., 244. 
Stroma effused, black, often covered by the epidermis, distinctly 
or obsoletely cellular within. Sporules oblong, fusoid, or cylin- 
drical, hyaline. 
316. Placosphaeria onobrychidis (DC.J. Sacc. Syll. 1439. 
On Lathyrus. Kew. 
317. Placosphaeria corrugata, Karst. Sacc. Syll. 1445. 
On hard wood. 
Gen. 3. FUSICOCCUM, Corda. Sacc. Syll. hi., 247. 
Stroma subcutaneous, erumpent, convex or conical, subcoriaceous, 
black, more or less distinctly cellular within. Sporules fusoid, con- 
tinuous, hyaline, usually straight. 
318. Fusicoccum fibrosum, Sacc. Syll. 1447. 
On Rhamnus cathartica. 
319. Fusicoccum hapalocystis, Sacc. Syll. 1455. 
On Platanus. 
Gen. 4. CYTISPORA, Fr. Sacc. Syll. ill., 252. 
Stroma covered or erumpent, conical or verruciform, cellular 
within, cells often distinctly circinating. Sporules numerous, con- 
tinuous, hyaline, oblong, sausage-shaped, expelled when moist in 
tendrils. 
* Ramicolous. 
320. Cytispora Hendersonii, B. &Br. Sacc. Syll. 1476. 
On Rosa arvensis. 
321. Cytispora rhodophila, Sacc. Syll. 1477. 
On Rosa canina. 
322. Cytispora rosarum, Grev. Sacc. Syll. 1478. 
On Rosa canina. 
323. Cytispora microspora, Qorda. Sacc. Syll. L480. 
On Amelanchier. Kew. 
324. Cytispora rubescens, Fr. Sacc. Syll. 1481. 
On Sorbus aucuparia , &c. Forden, (F. B. n., 623.) King’s 
Clifife. 
325. Cytispora leucostoma, Pers. Sacc. Syll. 1483. 
On Prunus domestica , &c. 
326. Cytispora microstoma, Sacc. Syll. 1486. 
On Prunus spinosa. 
327. Cytispora atra, Boa. Sacc. Syll. 1504. 
On Moms alba. Kew. 
328. Cytispora occulta, Sacc. Syll. 1509. 
On Alnus glutinosa. Regent’s Park. 
329. Cytispora stellulata, Sacc. Syll. 1516. 
On Ulmus campestris. 
330. Cytispora carbonacea, Fr. Sacc. Syll. 1517. 
On Celtis occidentalis. Kew. 
