Massee : Notes on Puccinia (iRAMrNis. 



191 



iHandovii have not made sufficient use of tlieir eyes, none of them 

 having noticed the remarkable structure of the foliage. This it is 

 which is the abietiimm of Swartz, thus confirming previous suspicions ; 

 and probably some botanists have confounded it with H. abietinum too." 



Wahlenberg's H, abietinum (in Fl. Lappon. and Fl. Suec.) appears 

 to be the true one, and he has a variety /3 in Fl. Suec. — p&Mdosum 

 —under which he quotes H. Blandovii^ Web., and M. with a C?) — H. 

 nhielinim^ Funck, Deutsch Moose, p. 59, t, 41. N 25, is correct. 

 N, is Drummond, M, Musci Americani. 



Mr. Wilson could not, of course, resist the evidence as to the 

 identity of his Knutsford laricinum with the Tunbridge //. 

 Blandovii, and in writing of it afterwards he adopted the latter name. 

 But, although not the first to discover the moss in Britain, he was at 

 least the first to discover it in fruit ; and, except at Knutsford, there 

 are few, if any, localities now remaining in this country where it is 

 found in that condition. The only other locality recorded in Bryo- 

 iogia Britannica" is Terrington Carr, Yorkshire. 



Mr. Wilson, in 1832, endeavoured to transplant some fruiting H. 

 Blandovii to a bog within a couple of miles or so from his house, but 

 with what success is not recorded. He planted, on May 5 th, 1832, 

 *'one patch in a low swampy spot " in a corner of Risley Moss, and the 

 precise locality is indicated by its proximity to the oak wood. On the 

 16th February, 1878, the writer of these notes paid a visit to the 

 locality referred to, to see if any trace could be found of R. Blandovii ; 

 but what was in 1832 a low swampy spot, was, 46 years later, being 

 prepared by the plough for what would doubtless prove a luxuriant 

 crop of potatoes. 



NOTES ON PUCCINIA QRAMINIS, 

 By G-eo. Massee. 



At the last annual meeting of the Yorkshire Naturalists' Union, Prof. 

 Williamson pointed out the enormous amount of damage done by the 

 corn mildew, Puccinia graminis, and suggested to the members of the 

 Botanical Section the desirability of investigating its life-history. In 

 anticipation of such an attempt, it has been considered advisable to 

 present, in a condensed form, the work done, bearing on this subject. 

 Polymorphism, or alternation of generations, are terms expressing the 

 fact that in plants — animals also — two or more phases are passed 

 through before the organism completes the cycle of its life-history. 



