( 456 •) 
fuscis; ramuUs sursum incrassatis ; sporis obovatis, sessilibus, 
e spiculis elongatis oriundis. — On bulbs of the common 
Snowdrop, affecting the outer coats, and yery destructive. — 
Gr. F. Wilson Esq. 
Spores 0.0006 — 0.0007 inch. long.” 
Quelques figures, représentant des hyphes conidiifères grossies',- et 
des gloraémles de conidies plus grossies encore, faisant partie de 
la table YIII, y furent ajoutées pour éclaircir le texte. 
Mrs. Berkeley et Broome passent sous silence 1’existence de 
sclérotes, et ne serablent pas avoir eu roccasion d’examiner les 
parties épigées des plantes malades. 
La longueur des conidies, exprimée en „ inches ’ \ représente une 
valeur de 15 — 17 5 p. 
II est plus que probable qu’entre 1873 et 1889 la maladie ne 
soit pas éclatée de nouveau en Angleterre, au moins avec tant 
de violencé, que les cultivateurs se crurent obligés d’implorer le 
secours de la Science pour combattre le mal. Pourtant, en 1889, 
de nouvelles alarmes se firent entendre, et trouvèrent une plume 
habile pour en faire mention dans le „ Gardener ’s Chronicle” du 
2 Mars 1889 (p. 275) en celle de Mr. Worthington Smith qui 
s’exprima en ces termes : 
„Numerous correspondents have during the last week or two 
complained of, and forwarded examples of diseased Snowdrops. 
In several instances the disease was first noted directly after 
the snow suddeuly melted a fortnight ago, the rotting of the 
Snowdrops and growth of the fungus had taken place beneath 
the snow, and the disease was not observed before the snow 
feil. The fungusgrowth was close te the ground, but in many 
instances it extended from Ihe ground-line downwards well in- 
to the bulb ; in a less number of examples the fungus cove- 
red all the plant above ground. In badly attacked bulbs the 
substance had become soft and pulpy, whilst the leaves and 
buds were covered with a pale brownish flocculence which ulti- 
mately became whitish.” 
„Under the microscope the fungus is seen to be a Polyactis , 
and I take it to be the fungus described by Messrs Berkeley 
and Broome in the Annals of Natural Ristory , for May, 1873, 
as Polyactis galanihina , with which it agrees in the size of 
the spores. The original material was received from Mr. G. F. 
Wilson, and the fungus is described as affecting the outer 
coats of the bulb, and „very destructive”. Perhaps Mr. Wilson 
will kindly give us his experience”. 
