156 
948. Phoma microscopica, B. & Br. 
On Berkeley’s original and only specimens of this there is 
a Phoma-like fungus to which it is at present impossible to 
assign a definite place. The pycnidia are scattered, subglobose, 
about 150 p diam., covered by the discoloured epidermis which 
is darkened around the ostioles, pierced by a pore: texture thin, 
parenchymatous, pale-brown. Spores oblong-ellipsoid, rounded 
at the ends, often biguttulate, occasionaily curved, hyaline, 
7-8 x 21-3 p 
On ie stems = _Potamogeton (Herb. Berk. no. 44!). It 
appears likely to a young state of an Ascochyta, but no 
Ascochyta on Pulsuopeiin seems to be recorded. It might be 
a Phyllosticta, but does not agree with those described on that 
host. 
971. Phoma Musarum, Cooke, in Grevill, xii. 22. 
There are a number of specimens oi this, all named by Cooke 
(Ravenel, no. 3182!, and Rav. & Cooke, Fung. Amer. Exs. 
no. 692!). They consist of what are probably the beginnings of 
perithecia or pycnidia, but no spores corresponding to Cooke’s 
description “ elliptico-elongate, 10 x 3” could be detected. 
993. Phoma linearis, Sacc. 
Phoma lineata, Sacc. Syll. iii. 860. 
Coniothyrium lineare, Thiim. Fung. Amer. Spec. no. 12. 
All the specimens under this head, including :— 
“ Coniothyrium lineare, Thiim.” (Ravenel, Fung. N. Amer. 
nos. 2810 !, 2925!, and Harkness, no. 2212!) 
“ Phoma linearis, Sace.” (Roum. Fung. Sel. Exs. no. 5767 !) 
seem to consist of nothing but either knots of mycelium, or 
young pycnidia or perithecia in which no spores were developed. 
1016. Phoma Laricis, Lév. (see Syll. Addit., p. 306). 
This is represented in the Herbarium by a specimen sent to 
Berkeley, and labelled in Léveillé’s own handwriting “* Phoma 
Larie icis, Lév. in strobil. Laric. Europ.—Tauria.’ 
It is not, however, on scales of Larch, but of Picea excelsa, 
and the examination of the a. showed that it does not differ 
from Sporonema strobilinum, Desm 
1017. Phoma Podagrariae, Westd. 
This, as is well-known, is nothing but a young undeveloped 
state of Phyllachers Podagrariae, Karst., and the specimens 
examined (Roum. Fung. Gall. Exs. no. 913 1) contain as a matter 
of fact numerous imperfectly formed asci. A reference to 
Westendorp’s description (Bull. Acad. Roy. Belg. 1852) shows 
that he intended the same thing: but Phoma Podagrariae, Bres. 
is, of course, quite different. 
