SALAD BURNET 



33 



4-\vinged calyx-tube or \vini;ed receptacle, and are thus dispersed by 

 the wind. When there are 3 achenes they are triangular. 



Salad Burnet is distinctly a lime-loving plant, requiring a lime soil, 

 but may be found commonly on such rock soils as those of the Rock- 



Sai.aiJ BiRNET (Polcrhnii Sniigiiisorba, L.) 



bed of the Middle Lias, which is mainly arenaceous, though it under- 

 goes changes which make it largely calcareous in part. 



Two fungi grow on this ])lant, Phragiuuhinn saiignisorbcc and 

 yEcidiiiiii polcrii. It is galled In- Hriophyes sangtiisorbce. 



The moths, the Reddish R)uff Moth [Acosnietia caliginosa\ (iitophos 

 pullata, Paramcsia aspersana, Ncpticula poterii, Selenia fcti-a/imaria, 

 Essex Emerald (Gconictra sinaragdaria), feed on it. 



Poterium, Linnaeus, is Greek, poterion, for a drinking-cup, as it 

 was used in wine, I'lin) iclls us. Burnet is from Brunette, brown, trum 



VuL. IV. 49 



