8 
loculi which are rather large and radiate.y disposed, filled with 
a greyish mass; no conceptacle. Spores 4-5 x lw, issuing as an 
olivaceous amber-coloured tendril ; — simple or branched 
at the base, 20-28 x 
On bark of Salix Caprea, S. fragilis, S. petiolaris, etc., Kew 
Gardens. The pyenidial stage of Valsa Schweinitzii Nits. 
Saccardo appears to have sent his specific | name on it in 
oversight of Fuckel’s prior n 
Distrib. rmany, ee Bais, Algeria. 
C. carbonacea /’r. = ae a ii. 544, Sacc. Syll. iii. 260. 
Allesch. vi. 610. Died. p. 3 
Stroma proper rather He ; loculi black and becoming in- 
distinct together with the whitish disc; ostioles prominent, 
black. 
On branches of Celtis occidentalis. Kew Gardens (Cooke). 
The specimens are somewhat doubtful, and imperfect, but they 
are not C. Celtidis Ell. & Ev. 
** A species of which little is known, though it is very common ; 
provided with a proper conceptacle ; pustules minute, not promi- 
nent, immersed in the inner bark; stroma proper carbonaceous, 
indistinctly divided into chambers, but there is a very distinct 
central columella.” (Fr., on Ulmus.) 
Diedicke, who finds it on Elm in Germany, describes it as 
follows :—“* Stromata loosely gregarious, raising the epidermis 
at length considerably, and bursting it with the whitish disc, 
flatly conical, up to 1-5 mm. broad, of dark olivaceous texture ; 
columella with a common ostiole. Spores 4-5 x 1-5 #3 Sporo- 
phores simple, filiform, up to 15 x 1 p, soon vanishing. 
Dist Belgium, Holland, Germany, Sweden, North America. 
Recorded also on Alnus. 
C. carphosperma Fr. Syst. Mye. ii. oS, Pr Handb. 
pp. 462, 826. Sace. Syll. iii. 274. Allesch. vi Died. p. 351. 
Pustules gregarious, depressed-conical, © et mm. broad, 
stroma often little and indistinct; loculi circinating, black; 
dise round, of a dingy whitish colour, with usually a single central 
black ostiole (but sometimes two). Spores 5-6-5 x 1-1-5 yp, issu- 
ing in a pale-yellow, then deeper yellow tendril; sporophores 
simple or verticillately branched, acicular, 15-20 « 1-5 p 
On bark of species of Tilia. England, Soapland: Treland ,; 
not uncommon. Winter and spring. The pycnidial stage of an 
undetermined species of Valsa. 
e freshly exuded spore-mass has the colour of dry wheat 
straw, or a ; that is the only mark apparently that will 
distinguish this . ambiens. It is recorded sometimes on 
Pyrus, e.g. in Scott. Nat. 1887, p. 127, on Pyrus communis and P. 
Aucuparia, but I think wrongly. There are two possibilities, 
(1) the Valsa to which it belongs may be indistinguishable from 
others included under V. ambiens, or (2) it may be distinct. 
