144 
Phoma Sacchari), but this suggestion deserves consideration by 
tropical mycologists 
: 
Fic. 4.—a, ‘‘ Sphaeropsis Bue hae Cooke,’”’ no. 230; 6b, ‘*‘ Macro- 
ngage Musae, B. & V.,”’ from Sydow, no. 189; c, “ Diplodia Radula, 
& Br. 
.» from Berk., no. 305 (young colourless spores, among the 
coloured ones). 
994. Phoma Sacchari, Sacc. 
Sphaeropsis Sacchari, Cooke, in Grevill. 1883, xii, 23. 
Macrophoma Sacchari, Berl. & Vogl. Syll. Addit. p. 311. 
M. vestita, Prill. & Delacr. in Bull. Soc. Myc. Fr. 1894, p. 165, 
piv.6; £_C. Sace. Syll. xi. 496. 
BoTRYODIPLODIA THEOBROMAE, Pat. in Bull. Soc. Myc. Fr. 
1892, p. 136. Sacc. Syll. xi. 522 
The ‘‘ Macrophoma’’ is obviously an immature state of 
Botryodiplodia Theobromae (which is known to occur on Sacch- 
arum), and is plainly the same as M. vestita, except that the 
clothing of hairs is wanting and that the spores are less ovoid 
and more lanceolate. Cooke’s specimens examined (Ravenel, 
no. 3173! = Cooke & Ray. Fung. Amer. Exs. no. 693!, on 
Sugar-cane, Georgia) have exactly the pycnidial texture of the 
Botryodiplodia, even including the faint tinge of purple, and 
after a long search numerous brown, but eseptate, spores were 
at last amped: in some of the pycnidia: they may be called 
f. Saccha 
With bees to the hairs of MW. vestita the epoch-making work 
of Petch on Lasiodiplodia (Ann. Roy. Bot. Gard. Peraden. 1910, 
iv. 445) is conclusive ; the hairs are produced on the outside of 
the fungus when it is growing in a damp atmosphere (M/. vestita 
grew on roots of Theobroma), but on the dry stems they would be 
altogether wanting. As regards the lanceolate spores, this is 
evidently another case comparable to those mentioned before 
under P. fusigera (see no. 910); what the exact meaning of these 
lanceolate or fusoid spores may be has yet to be determined, 
but there can be no doubt that in certain circumstances a 
Diplodia or a Botryodiplodia produces them 
Thus four or five fresh names (besides the round dozen 
summed up by Petch) become mere synonyms of Botryodiplodia 
Theobromae, Pat. Anyone who has access to a sufficient number 
of original (type) specimens could carry on this process to a con- 
siderable extent, apart, that is to say, from biological differences. 
These latter, however, as usually stated, are largely illusive; 
for they are dependent to a degree which they do not yet act 
