18 



JOURNAL OF THE ROYAL HORTICULTURAL SOCIETY. 



numerous thread-like sporules (15-25 x 1^-2 /a), with one central division 

 or septum. It has also been found in Portugal. 

 Sacc. Syll. iii. 2639. 



Staphylea Leaf-spot. 



Although Staphylea is common enough, it seems to have escaped 

 attack from fungus parasites in this country, although liable abroad. 

 Leaf-spot caused by Septoria staphylea (Pass.) is known in Italy, where 

 it produces rufous spots bearing the small perithecia, which eject thread- 

 like sporules (16-20 x 1 fx). 



Sacc. Syll iii. 2585. 



Forsyth i a Leaf- spot. 



The leaves of Forsythia do not appear to suffer from spot in this 

 climate, although Phyllosticta forsythia (Sacc.) is recorded in Italy. 

 The spots are rounded, ochraceous, with the small perithecia concentri- 

 cally disposed upon them. The sporules are small (5-7 x 2^-3 /x), with 

 two minute guttules. 



Sacc. Syll. iii. 139. 



A species of Plioma has been found in Britain on dead twigs, but not 

 as a parasite. 



Garrya Leaf-spot. 

 Phyllosticta garrya (C. & H.). 



This leaf-spot was first recognised on leaves sent from North 

 America, but has since been found upon shrubs under cultivation in this 

 country. The spots are elliptical, grey, with a purple margin. The 

 receptacles are scattered over the upper surface and are point-like, as 

 usual. The sporules are narrowly elliptical ] (10-12 x 2-2^ it) and 

 uncoloured. 



Grcvillea, ix. 81 ; Sacc. Syll. iii. 121. 



Another leaf- spot has been found on the leaves of Garrya elliptica in 

 France, which has variable spots encircled by a black line, and two- 

 celled sporules (Ascochyta garrya), which are fusiform and slightly 

 greenish-yellow (8-10 x 3 /*). 



Sacc. Syll. iii. 2167. 



Yet another leaf -spot has been discovered on Garrya elliptica in 

 France, which has bleached spots (Septoria garrya) and rod-like 

 sporules (15-18 x H a0« Whether there is any connection between these 

 three species we cannot say. 



Sacc. Syll. iii. 2701. 



Deutzia Pink Mould. 

 Fusidium deutzia (Cooke), PI. XVIII. fig. 34. 



This delicate little mould affected the under surface of the leaves of 

 Deutzia and appeared to be parasitic, forming small convex tufts of a 



