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of fungi. But as these fungi are, as a rule, only such as are found upon almost all 
decomposing vegetable matter, it is useless to enumerate them. One species, how- 
ever, seems to me worthy of special note, as when it appeared upon a tomato, the 
latter underwent very rapid decomposition. The fungus is, I believe, an un- 
described species of Spheronema, of which I have given a figure (fig. 1) ; it may be 
thus described :— 
Spheronema lycopersict, n. sp.—Perithecia minute, spherical, arranged somewhat concen- 
trically upon the surface of diseased tomatos. Each perithecium surmounted by a dirty flesh- 
coloured globule of spores. Spores minute, cylindrical, or somewhat sausage-shaped, hyaline, 
either with or without nuclei. On outdoor tomatos, Clenchwarton, King's Lynn, Oct. 1880. 
Perithecia about 150 mk. in diameter. Spores ro by 2—3 mk. 
The diseases of the tomato to which I have given most attention, however, 
have been those peculiar to fruit grown under glass. It is worthy of remark that 
the Peronospora disease does not occur under these conditions ; at least if it ever 
does do so it is very uncommon. 
The first and most important disease to which I would call attention is of fre- 
quent occurrence, and may be termed for distinction’s sake the “‘ black spot” 
(fig. 2). It makes its first appearance usually (but not invariably) upon the green 
tomato as a circumscribed brownish spot, of no great size, upon the crown of the 
fruit, usually near the remains of the style. As the tomato ripens, the spot has a 
whitish hue from the semitransparent dead cuticle of the fruit, which is at this 
time unaffected by any fungus growth, being simply dead. Specimens of this 
disease have been submitted to more than one horticultural journal, and pro- 
nounced to be ‘“‘sun-scalds.” This, however, they cannot be, for the spots of 
disease are upon the crown of the fruit, which hangs downwards, so that any sun- 
scald would be upon the base of the fruit, which is uppermost. I have seen 
numerous specimens in situ, and can therefore speak positively upon this point, 
as it might be suggested that the primary lesion was due to a burn, and that the 
fungus afterwards attached itself to the injured spot. As the tomato ripens and 
assumes the beautiful red colour of maturity, the spot, which varies in size from 
3 to 10 millimetres, acquires a jet-black colour. If a section be now made 
through it (fig. 3), it will be found that this blackness extends inwards towards 
the centre of the fruit, to a much greater extent than is apparent from the exterior. 
It is distinctly defined and harder than the parenchyma of the fruit. If a por- 
tion of this black substance be examined microscopically, it is found to consist of 
an assemblage of black mycelium compacted pretty closely together, having the 
appearance of the mycelium of the Dematici or black moulds. Upon the upper 
surface—the black spot—four fungi are found ; one a true black mould, the other 
three polymorphic states of a Phoma. The black mould may be thus described. 
Sporocybe lysopersict, n. sp. (fig 4).—Tufts olive-green, flocci erect, twice or thrice septate, 
about 5 mk. indiameter. Heads terminal globose, zo—30 mk. across. Spores numerous, sub- 
globose or ovate, black, 3 mk. long. 
The Phoma is preceded by conidia and macro-conidia. 
Conin1a: Cladosporium lycopersici (fig. 5).—Hypha tufted, septate, irregular in outline at 
their apices, springing by their bases from a black spot ; compacted mycelium, spores abundant, 
cylindrical, black, 1—3 septate, slightly pointed at their extremities ; 10o—30 mk. long, by 8—10 
. wide. 
Macro-conipia: Macrosporium lycopersici (fig. 6)—Flocci, well developed, black, sep 
