the hyphaeof the uredinial mycehum as cytological studies have 

 shown, but there is no positive evidence to show that it can be 

 regarded as a distinct species. 



Knowing the taxonomic relationship, it may be predicted 

 with reasonable certainty that there is not much danger of the 

 rust transferring to timothy from the other cereals and grasses. 

 It may be expected to become more general in its distribution 

 and may locally do considerable injury; but in spreading it will 

 be limited, chiefly if not entirely, to passing in the summer spore 

 {urediJiial) stage from timothy to timothy, 

 Purdue University, 



Lafayette, Indiana 



ABERRANT SOCIETIES OF SANGUINARIA AND 

 TRILLIUM 



By Roswei.l H. Johnson 



Several years ago, in the course of biometric studies on some 

 of our wild flowers, I determined the variation in the number of 

 petals of Sangiiinaria Canadensis L., the bloodroot, for several 

 localities. One of these localities gave results so aberrant that 

 it seems desirable to place it upon record. 



The manuals give the number of petals as 8—12 but always 

 figure it with 8 petals. Dr. Cheney, formerly of the University^ 

 of Wisconsin, informs me that the modal number is eight in every 

 one of the localities in which he has seen it in that state. The 

 following table gives my results, with a count from Milwaukee,. 

 Wisconsin, for which I am indebted to Dr. P. H. Dernehl. 



Place 



Yonkers, N. Y 



Alpine, N. J , 



Glencoe, 111 



Milwaukee, Wis 



Stony Brook, Mass. . 



Blue Island, 111 



Eagle Heights, Wis. 



Year 



No. 



6 



7 



8 



9 



10 



II 



'99 



102 











18 



18 



16 



2.S 



'99 



171 



3 



2 



ibS 



I 











'00 



75 







2 



73 















'02 



103 







I 



98 



2 



2 



I 



'99 



4 











4 















'00 



8 











8 















'02 



5 











5 















24 



o 

 o 

 o 

 o 

 o 

 o 



It is evident that in general any other number than 8 petals is 

 a rarity. The society in Yonkers where the count was made is, 

 therefore, a remarkably aberrant one, presenting a polygon of 



