27 
On. dead .stems: of Vaccinium -Myrtillus.. West Kilbride, 
Ayrshire (Boyd). Mar. 
The slightly convex pustules of the cinereous stroma show 
dark through the epidermis, which is at length pierced at the 
centre, it may be by a simple blackish ostiole, it may be by a 
whitish pruinose dise in which lie 1-5 round ostioles. ° 
Distrib. gicaiiioser 
EXCLUDED SPECIES. 
The four following species, which have been recorded as 
British, must be excluded from our present list :— 
C. macilenta Rob. & Desm. in Ann. Sci. Nat. 1849, xi. 352. 
Sace. Syl iii. 258. Allesch. vi. 565. 
This species is recorded “ on dry branches of Acer obtusatum,” 
at Kew Gardens, but entirely in error. It normally occurs on 
Cornus mas, and is also stated in books to be found on Acer 
Negundo and Staphylea pinnata. But Desmaziéres afterwards 
came to the conclusion that the host of his specimens, said in 
the “Annales” to be Acer Negundo, was not that plant, but, 
as he states on his exsiccatum, ‘‘ Staphylea pinnata,” and, later 
still, Westendorp decided that they are on, not Staphylea, but 
ornus mas : 
C. Ribis Hir. The only British specimen which I have seen 
under this name—‘‘ On Ribes, Swanscombe (Cooke) ’—appears 
to be nothing but Diplodia. 
C. decipiens Sacc.. This species seems to be more likely to be 
a Naemospora. I have seen no specimens, but. at any rate, 
judging by the description, it cannot be a Cytospora 
C. stictostoma Grove, in Journ. Bot. 1916, p. 190. 
This species is a Phomopsis (Ph. stictostoma). The false name 
was given to it through inexperience; at that time it was not 
recognised that Phomopsis often has a plurilocellate or lobed 
pycnidium similar to that typical of Cytospora. 
Cytospora Acharii, C. flavo-virens, and C. stellulata belong to 
the genus Cytosporina, and must also be excluded. 
In addition to these it should be remarked that, in all pro- 
bability, the following names from those previously mentioned 
will be suppressed by future mycologists, unless they are adopted 
in a restricted sense or with a new meaning :— 
C. hyalosperma C. microspora 
C’. leucosperma C. guttifera 
Even if original type specimens are ayailable, they will be 
of little use, since many species of Cytospora are so extremely 
like one another. I was first convinced of the truth of this ve 
finding what seemed to be excellent examples of Fries’ 
sperma on Acer Pseudoplatanus ; the tendrils, naturally iKeodnoed, 
when first seen appeared perfectly white, and the other characters 
