NEW BRITISH FUNGI. 
8 
mm.), on thick sporophores, which are three times as long as the 
sporules and about half their diameter. 
On small twigs of Broussonetia papyrifera. Kew. 
Phoma rhodorae, Cooke. 
Spots apical or marginal, large, irregular, brown. Perithecia 
gregarious, minute, punctiform, black, immersed, scarcely visible 
to the naked eye. Sporules numerous, very minute, subelliptical, 
hyaline (-004--005 X *002 mm.), on short sporophores. 
On living leaves of Rhododendron. Kew. 
Perhaps the spermogonia of Sph. ( Lcestadia ) rhodorae. 
Phoma polygonorum, Cooke. 
Loosely gregarious. Perithecia minute, punctiform, covered by 
the cuticle, which is soon pierced by the minute ostiola. Sporules 
narrowly elliptical, continuous, hyaline, without distinct nuclei 
(•012 x *003 mm.). 
On stems of Polygonum cuspidatum. Kew. 
Phoma cistina, Cooke. 
Densely gregarious, subcutaneous, elevating and sometimes 
throwing off the outer layer of the bark. Perithecia subglobose, 
black, collapsed when dry ; ostiolum sometimes short, and just 
piercing the cuticle, sometimes 2 or 3 times as long as the 
diameter of the perithecia, and flexuous. Sporules subcylindrical 
or fusoid, obtuse at the end, usually with two small nuclei, hyaline 
(•006-*007 x *0025 mm.). * Sporophores about twice as long as 
the sporules. 
On branches of Cistus laurifolius. Kew. 
There is a circumscribing black line in the wood where the 
perithecia are adnate, or partially immersed, but in these instances 
all the perithecia were exolete. Little doubt can exist of these 
being really a Diaporthe , but no ascigerous fruit has yet been 
seen. 
Phoma Barbari, Cooke. 
Perithecia loosely gregarious, covered by the epidermis, convex, 
not erumpent, at length pierced. Sporules oval, binucleate, 
hyaline (’005 x *003 mm.) 
On branches of Lycium barbarum. Kew. 
Phoma celtidis, Cooke. 
Perithecia prominent, convex, loosely gregarious, covered by the 
cuticle, piercing it with its black punctiform ostiolum. Sporules 
oval, without nuclei, hyaline (-005 x *0035 mm.). 
On slender twigs of Celtis occidentalis. 
There is another Plioma , on thicker branches, which we have met 
with, once or twice, with fusiform binucleate sporules (’01 x *003), 
but we have not sufficient material to warrant a description. 
Phoma rubella, Cooke. 
Perithecia collected on indeterminate red spots, semi-immersed, 
somewhat depressed, black, scarcely papillate. Sporules narrowly 
elliptical, without nuclei, continuous, hyaline (*007 X *002 mm). 
On dead stems of U mb elli ferae. Kew. 
