22 
black, shining; walls of loculi thin, of dark-brown prosenchym- 
atous cells. Spores 4 X 1p, issuing in sulphur-coloured, then 
lemon-coloured tendrils; sporophores filiform, branched, 
20-25 X lp. | 
On bark of Pinus sylvestris. Twycross (Berk.) ;. Cheshire 
(Ellis). The pyenidial stage of Valsa Pini Fr. Westendorp 
records his form (C. pinicola) on Cedrus Libani, with spores 6-95 p 
long. The species is also recorded on Pinus Strobus and on 
Cupressus. 
The Cheshire specimens have numerous small crowded 
stromata; disc flat, 0-5 mm. diam. or less, erumpent, smoky 
black, pierced and in some cases nearly obliterated by a large 
prominent hemispherical black shining ostiole; spores as above ; 
sporophores somewhat acicular, sparingly branched, acute, 
15-18 p» long, colourless and springing from a dusky-olive pro- 
liferous stratum. 
Distrib. France, Belgium, Germany, Denmark, Dalmatia. 
C. Platani Fcki.. Enum. F. Nass. p. 52. Sacc. Syll. iii. 267. 
Allesch. vi. 590. Died. p. 352. 
_ Pyenidia numerous, gregarious, roundish, about 500 » diam., 
black, raising the epidermis in the form of a_ tubercle 
without distinct conceptacle or stroma, divided irregularly 
into incomplete chambers, walls of clear-brown tissue. Spores 
6-8 x 0-5-1 p, issuing in very slender long flexuous pure-white 
tendrils; sporophores filiform, longer than the spores. 
On the smaller dead branches of Platanus acerifolia. Kew 
Gardens. Apr. 
Distrib. France, Holland, Germany, Austria, Italy. 
C. pruinosa Sacc. Mich. i. 519. Sphaeria pruinosa Fr. Syst, 
Mye. ii. 486 p.p. Dendrophoma pruinosa Sace. Syll. iii. 179. 
Allesch. vi. 403. Cytospora melasperma Fr. var. Fraxini Allesch. 
Pycnidia gregarious, immersed, depressed, adnate to the 
periderm, covered with a greyish pruina, with a bullate erumpent 
ostiole. Spores hyaline, then yellowish, 5-7 x 0-5-1; sporo- 
phores verticillately branched, 4-5 times longer than the spore. 
On branches of Fraxinus excelsior. Twycross (Berk.). 
var. Ligustri Strasser, in Verh. k.-k. Zool. Bot. Gesell. Wien, 
1900, Ix. 311. | 
Pycnidia globose, unilocular, attenuated into a very short 
neck, ostiole conico-truncate, but scarcely protruding beyond 
the pierced periderm, at length collapsing. Spores 5-6 x 1p, 
issuing in olivaceous or greenish-black tendrils. 
On twigs of Ingustrum vulgare. Regent’s Park (Cooke). 
West Kirby (Ellis). Stevenston, Ayrshire (Boyd)... Jan.—Jun. 
Strasser places this variety under “‘ Dendrophoma pruinosa,” 
which is what Tulasne states to be the spermogone of his: Valsa 
Cypri on Ligustrum. Valsa Cypri also occurs on Fraxinus, but 
the British specimens on Ligustrum may not belong to that 
species. i-vaoma so 9 
