Supplementary Notes on the Erysiphaceae 
By E. S. SALmon, F.L.S. 
(Concluded from page 210) 
EXCLUDED OR DOUBTFUL SPECIES 
Erysiphe album Fries, Observ. Myc. 1: 207. 1815. &. 
album Achar.—There is no specimen of this plant in Fries’ her- 
barium at Upsala, but I have seen the single specimen that the 
Acharian herbarium at Lund possesses. There is, unfortunately, 
no trace of any fungus now to be found on the leaf mounted on 
the sheet labeled Evysiphe album. As the description given by 
Fries (“‘ Erysiphe album, receptaculo tenuissimo subnullo, capitulis 
nigris. In foliis Jwglandis in Helvetia. Nudo oculo ut puncta 
alba apparet’’) is altogether inadequate to make identification pos- 
sible, the name must be allowed to drop. 
I have been able, through the kindness of M. P. Hariot, to 
examine the types contained in the Paris Museum, of the follow- 
ing, published by Mérat, in ‘‘ Revue de la Flore Parisienne,’ 459- 
1843. 
“Erysiphe lathyri Mérat.—Granules trés fins, spheriques, noirs, 
rares, sans apparence de filaments basilaires, naissant sous les 
feuilles du Lathyrus latifolius L.” 
The minute irregularly shaped black bodies on the leaves are 
not of fungous origin, but are probably the excrementa of some 
animal. 
“EF. saxifragae Sibericae Mérat.—Le dessous des feuilles de 
cette plante [Saxifraga Siberica| a parfois, en été, des mye 
de petits granules noirs, sphériques ; d’autres fois, comme hes 
droides, un peu pénicillés (4 la loupe), avec l’apparence d'un 
membrane ténue, a reflet argenté dans leurs intervalles.”’ Ai 
The bodies here described have certainly nothing to do - ; 
the Erysiphaceae. They are not, I think, of fungous origin, bu 
appear to be the work of mites. : 
£. tiliae Mérat.—Les granules sont d’une finesse excessiV% 
peu abondants, noirs, arrondis, et reposent sur des taches blan 
atres, qui décolorent en cel endroit le dessous des feuilles du 
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