DECADES OF BRITISH FUNGI. 109 
subglobose, smooth, black, surrounded by the lacerated epidermis. 
Ostiolum scarcely conspicuous. Sporidia minute, ovate, simple, pellucid. 
—Lév. in Ann. Se. Nat. 1846, v. p. 81. Sporonema glandicola, Desm. 
—On acorns which had lain some time on the ground. Chichester, 
1864; Hampstead, January, 1866. (Fig. 14, sporidia, x 300.) 
32. PHOMA PETIOLORUM, Rod.  Perithecia scattered, globose or 
ovate, black, covered by the epidermis, papillate, at length pierced with a 
terminal pore. Nucleus whitish. Sporidia minute, ovoid-oblong, with 
two nucleoli.—Desmazi?res in Ann. des Sc. Nat. 1847, viii. p. 16. 
West. and Wall. Herb. Crypt. Belge, n. 471.—On petioles of the 
leaves of Robinia Pseudacacia. Swanscombe, February, 1866. (Fig. 
13, sporidia, x 300.) 
33. Diptopia Rust, Fr. Perithecia scattered, covered with the 
epidermis, prominent, semiglobose, black. — Sporidia elliptical, dark 
brown, rather opaque, uniseptate. Sometimes the perithecia are ar- 
ranged in short lines, in which state it resembles externally Spheria ač- 
breviata, above described.—Summ. Veg. Scan. p. 417 ; . Fuckel, Fung. 
Rhen. Exs. n. 536.—On bramble. Shere (Dr. E. Capron); Highgate 
and Hampstead, autumn, 1865. 
34. Diptopia ZEscuLr Lé.  Perithecia innate, globose, black 
within, covered by the fissured epidermis. Sporidia elongated, opaque, 
brown and uniseptate—Ann. des Sciences Nat. 1846, v. p. 290; 
Fuckel, Fung. Rhen. Exs. n. 1563.—On fallen twigs of Æsculus Hip- 
pocastanum. February, 1868. : 
35. HENDERSONIA ROoBINLE, West. Perithecia reddish-brown, either 
isolated and scattered, or united in a linear series. Ostiola very small 
and papilleform. Sporidia numerous, brown, oblong or elliptical, 
with 6 or 8 transverse septa, here and there united by longitudinal 
septa.— Westendorp in Bullet. de Brux. ser. 2. ii. n. 8.—On branches 
of Robinia Pseudacacia. Swanscombe, Kent, February, 1866.—Ex- 
ternally it has considerable resemblance to Spheria elongata, which 
occurs on the same sticks, and of which this is doubtless merely a con- 
dition. The sporidia are only about two-thirds the length and diameter 
of those of the Spheria. (Fig. 17, sporidia, x 300.) ee 
36. Hexpersonta Rosa, West. Perithecia commonly scattered 
over bleached spots, small, black, and prominent, covered by the epi- 
dermis. Sporidia elliptical, triseptate, brown, slightly constricted at — 
the septa.— West. Bull. de Brux. ser. 2. i. n. 9; Fr. Summ. Veg. — 
