18 



ITXGOID PESTS OF CULTIVATED PLANTS. 



Fuchsia Diseases. 

 Although the Fuchsia is largely grown in this country, its enemies are 

 very few, and, so far as we are aware, none of a fungus origin have as yet 

 been found, although a leaf-spot is known in France. 



Houseleek Rust. 

 Endophyllum Sempervivi (A. & S.). 



This peculiar parasite is somewhat intermediate in its character 

 between a uredo and a cluster-cup. The envelope which encloses the 

 spores is immersed in the Bubstance of the succulent leaves, and bursts 

 irregularly to discharge the spores. 



The teleutospores, as they are termed, are for the greater part rounded 

 orobovate (25 86 x 20-32 fi), with the surface warted and of a brownish- 

 yellow colour. They germinate after the manner of those of Puccinia. 



The sp eies is known over the greater part of Northern Europe. 



D 



* 



*-f#0j 



y 5 



X 20 



XJ20- 



1 ra. 7. Endophyllum Sempervivi, D, Section through affected leaf, 

 magn.; E Seotion through pustule, magn. ; F, Spores, magn. 



Sacc. Syll. vii. 2676; Oard. Chron. May 22, 1880, p. GGO, with fig.; 

 I /'.-. M.F. 200; Cooke Hdbk. No. 1686; Ptowr. Brit. Ured. 229. 



II"- i \ si ckle Leaf-spot. 

 Phyllo8ticta I. (West), PL 111. fig. 56. 



The Hone) uokle maj claim to be a garden flower, and is certainly a 

 favourite in cottage garden . The leaf-spots are rounded and pallid, with 

 a brown margin, and the perithecia are quite small, appearing like very 



minute dots upon tin 



The sporulea are rather larg< for the genua to which they belong, 



and are narrowly elliptical, with two nuclei (10 llx2i~8.\ ft), and 

 colon lit 



