140 
rounded at the ends, straight in front view, narrower and curved 
in profile, colourless, granular within, occasionally ee 
16-20 x 4-5 — 5-5; sporophores not seen. (Fig. 2a.) 
On the samarae of Acer Pseudoplatanus, A. Negundo, on the 
pericarp, not on the wings. The figure is taken from spores of 
Montagne’s own specimen in Herb. Berk., named in Montagne’s 
handwriting “ Sphaeropsis samarorum, Mont.” 
These fusoid spores remind one of the others like Phoma 
fusigera, P. fusispora, P. Ricini (ante, 1919, pp. 191-3, 437), so 
that, except for the thin pycnidial wall, one could at once accept 
this as a mere young state of a Diplodia. If so, it belongs to 
Diplodia atrata, Sace., which occurs on bark of Acer Pseudopla- 
tanus and A. Negundo, and has equally inconspicuous sporo- 
phores, but is thick-walled. It may be taken as a certainty that 
the idea, prevalent up to Saccardo’s time, that the fungi found 
upon twigs or branches must be different from those found upon 
the leaves, fruits, and other parts of the same plants, has little 
or no foundation; but it is true that those forms which occur on 
the less bulky structures, like samarae, are slighter in texture 
than those on the thicker parts. 
As an instance of what could be done by those who followed 
the old tradition, there is in the Herbarium under the name 
Phoma samaricola a specimen issued by Fuckel (“ Phoma ellipti- 
cum, Fekl.”’ Fung. Rhen. no. 2128 !), on rotting samarae of Acer 
platanoides, which is obviously a Phomopsis, and probably = 
Phomopsis platanoidis, Died., probably also Phoma Aceris-Negun- 
dinis, Arc., is another synonym of the same species. 
Thus there can be found on samarae of Acer at least three 
fungi, similar at a cursory glance, but differing considerably in 
their spores, (1) Phomopsis platanoidis, Died., (2) Phoma sama- 
rarum, Desm., and (3) Macrophoma samaricola, B. oO 
which (1) belongs to a Diaporthe, (2) to a Pleospora, and (3). pro- 
bably to a Diplodia and perhaps ultimately to a Botryosphaeria. 
Fic. 2.—a, “ Sphaeropsis @ samarorum, Mont.,”’ spores from Montagne’s 
_ specimen in Herb. Berk. + Oy Sphaer ropsis Palmarum, Cooke,’ spores 
from Cooke’s specimen; c, “ Sphae ropsis Pandani, Lév.,” + pias from the 
specimens sent by Léveillé to Berkeley. 
938. Phoma Palmarum, Sacc. 
Sphaeropsis palmarum, Cooke, in Grevill. 1877, v. 101, pl. 86, 
f. 1 (on petioles and midribs of Cocos nucifera). 
