13 
which is pierced by a pore; loculi numerous, radiately disposed, 
often imperfectly divided, walls of the chambers of thick brown 
prosenchymatous cells. Spores 5-6 x 1-5 «;sporophores crowded, 
long, slender, filiform, usually simple, 20-25 x 1-1-25 yp. 
On dead twigs of Saliz. Sutton Coldfield. Apr. May. On 
the same twigs was an abundance of Valsa germanica Nits. of 
which it is the spermogone; when the two came close together, 
the 6-9 erect black ostioles of the Valsa formed a ring round 
about the spermogonial disc, piercing the periderm at a distance 
of 0-5-1 mm. away from it. This mode of occurrence is especially 
characteristic of this species. The grey disc of the Cytospora 
was occasionally pierced by two papille. 
Distrib. Germany (on Populus), Finland. 
C. guttifera Fr. Syst. Myc. ii. 545. Cooke, Handb. p. 462. 
ace. Syll. iii. 264.  Allesch. vi. 578. Died. p. 339. Sphaeria 
guttifera DC. Flor. fr. vi. 136. 
“Stromata immersed, plurilocular, black, attenuated into a 
conical obtuse erumpent neck; gelatinous contents issuing in a 
whitish globule. Spores oblong-cylindrical. 
On branches of Quercus. Berkeley says “on dead Willow 
twigs.” Also recorded in Germany on Corylus and Tilia. 
“The loculi form a black tubercle, immersed in the bark, 
on which is placed a neck which perforates the epidermis. 
Globule at length black.” (Fr.) 
The globule perched on a subconical neck forms the distin- 
guishing feature of this species, if indeed it be anything but a 
chance collection of forms in which the weather has caused the 
tendril to assume the shape of a globule, as I am inclined to 
think. The somewhat doubtful specimens seen have pustules, 
up to 0-75 mm. diam., immersed in the bark and surrounded 
y a sunken zone: for a long time they remain covered, but 
at length a dark grey disc with a thick neck protrudes; within 
are 1-3 black loculi immersed in a cinereous-brown stroma. 
They are not C. ambiens, since they have a distinct conceptacle. 
Disirib. France, Germany. 
C. Harioti Briard, in Rev. — 1889, p. 16. Sace. Syll. x. 
247. Allesch. vi. 591. Died. p. 3 
Stromata scattered or ae gregarious, not crowded, 
0-5-1 mm. diam., conical on a roundish base, or if oval longitu- 
dinally elongated, olivaceous-grey, deeply immersed, long covered 
by the epidermis, then splitting it by a dingy-brown disc, with 
usually a single blackish pore; loculi several, irregularly arranged, 
separated by thick brown walls. Spores 4-5 x 1-5 yu; spore- 
mass quite colourless; sporophores acicular, 12-15 < I yp. 
Dis small twigs of Populus. Bromborough, Cheshire (Ellis). 
en Distrib: France, Germany. 
