FUNGOID PESTS OF CULTIVATED PLANTS. 153 



American mildew leaf-spot, PJwma ampelogena (Sacc), has been 

 found in the United States to follow the American mildew on vine-leaves. 

 Sporules 4 x 3 /x. 



Vine leaf-spot, Phyllosticta Vitis (Sacc), found in Italy on living 

 vine-leaves, with sporules 6 x 3 /x. 



Labrusca leaf-spot, Phyllosticta Labruscce (Thiim.), is an American 

 species, which attacks the leaves of the Labrusca grape. The sporules 

 are large, 9-11 x 6-7 /x, on small brown spots. 



Italian Vine leaf-spot, Phyllosticta viticola (Sacc), appears to be 

 confined to living vine-leaves in Italy. The sporules are 5 x 2^ ju. 



Leveille's leaf-spot, Phyllosticta Leveillei (Cooke in Journ. B.H.S. 

 1878, p. 92), was described by Leveille (in Ann. Sci. Nat. Bot. 1846, 

 v. p. 279) and specimen preserved in Berkeley Herbarium, with sporules 

 about 10 /.i long. Known hitherto only in France. 



Carolina vine-spot, Phyllosticta viticola (B. & C), forms large spots on 

 the leaves of Vitis vulpina in Carolina. Sporules 8-9 x 4 p. 



Ellis's Labrusca leaf-spot, Ascochyta Ellisii (Thiim.), on leaves of 

 Vitis Labrusca, has bicellular sporules 6-8x5-6 /t/. 



Saccardo's leaf-spot, Ascochyta ampelina (Sacc), on vine-leaves in 

 Italy. Sporules iwo-celled, 10 x 3 ^. 



Curtis's Vino leaf-spot, Sacidium viticola (Cooke, Journ. B.H.S. 

 1878, p. 92). Specimens from North America were distributed under the 

 name of Septoria viticola. Sporules globose, 10 /j. 



Texas melanose, Septoria ampelina (B. & C), on leaves of Vitis 

 vulpina, known in Texas and S. Carolina, with sporules 30-50 /n long. 



Small vine leaf-spot, Septoria vinea (Pass.), has occurred in Italy, 

 with sporules 12-18 xH/u. 



Sorokin's vine-spot, Sphac'eloma ampelinum (Sorok.), is a Russian 

 species but little known. 



Grape Red Spot. 

 Glceosporium rufomaculans (Berk.), PI. XIII. fig. 3. 



This spot was first recognised on Grapes in 1854, and. since that 

 time it has fortunately occurred but rarely, especially as it is one of 

 the kind known as anthracnose, and they are virulent diseases to deal 

 with. 



It forms a rounded spot of a sienna-brown colour on the fruit, 

 preserving constantly a definite outline. This spot separates readily from 

 the subjacent pulp, in consequence cf a copious crop of mycelium, the 

 threads of which form the radii of a circle. The surface is rough with 

 little raised orbicular reddish perithecia, or conceptacles, for there are 

 no true perithecia, which are arranged in circles. The conidia are pro- 

 duced within the- conceptacles or cells, and are oblong, without any 

 division as yet observed, but constricted in the middle, and colourless 

 (15-20 p long). In age the false perithecia fall away, leaving a little 

 aperture, the border of which is often stained black. 



We have assumed this to be a Glceosporium, most certainly not 

 Ascochyta, as first described, but we have not been fortunate enough to 

 meet with it. It seems to be distinct from Glceosporium uvicolum on 



