plant at the time of the Mcidium being upon it, which 

 is after wet weather in the fummer, or early in au- 

 tumn : being apparently tempted by its flavour, they 

 over eat themfelves, or ^Ho. are deftroyed by fome 



poifon. 



Fig. 6. ^. rhej. 



VERY fmall, fcattered on the back of the foliage of 

 Rheum rbaponticiim in autumn. 



Fig. 7. Uredo spires. 

 THIS is of a larger fize, occafionally fpreading, or 

 confluent ; its colour a brightifli yellow. 



Fig. 8. U. Ros^. 



CONSPICUOUS upon various parts of rofes, and 



other plants. It is varioully fliaped, bright yellow, 



the infide or feed largifli, refembling tab. 320, and 



may, perhaps, be the fame fpecies. This fpecies is 



obfervable on many plants, as wheat, grafles, Sec. in 



autumn. 



Fig. 9. U. Chenopodii. 



ON the foliage of Chenopodium olidum. It is flat, 

 lightilh brown, the cover fomewhat pulverulent. 



TAB. CCCXCIX. 



Fig. I. RETICULARIA HORTENsis. Bull. ^2^. Jig. 1. 

 With. 3 ed. V. 4. p. 387. 



COMMON on tan in hot-houfes. It at firft appears 

 to ferment, as it v/ere, in a kind of whitifli froth, in a 

 few hours becoming yellowifli, and feemingly mixed 

 with a powder ; at length it grows fragile, flattens, and 

 afllimes a lightifh brown on the outfide, being replete 

 with dark powder or feeds in irregular divifions within, 

 after which it foon falls to pieces. In the frefli ftate it 

 fmells not unlike rotten cheefe. 



Fig. 2. R. LUTEA. Bull. '^o. fig. \. 



THIS is, at firft, often of a bright yellow, and quite a 

 foft frothy fubftance, hanging, or feemingly dropped. 



