Ohseroations on some Scottish Uredineae and Ustilagineae 139 



The teleutospore son are dark broN%Ti in colour, linear, and 

 up to 4 mm. long. They are present on the leaves, sheaths, and 

 stems. The teleutospores measure 25-3S x 15-20 /z; mesospores 

 are also present. No paraphyses are found in the teleutospore 

 sonis. The Scottish fungus agrees closely %\-ith Fuckel's sp)eci- 

 mens and \nth Sydow's specimen in the Mycotheca Marchica. 

 It is improbable that this is P. horealis Juel, for the specimens 

 were found at a low level (about 400 feet) and the alternative 

 host of this species, Thalictriim alpiniim, is not found below 

 an altitude of 1000 feet in this neighbourhood, an elevation not 

 attained within 15 miles of the spot where the rust was collected. 



The specimens pre\-iously assigned to P. Anthoxanthi Fckl. 

 (see Journ. Bot. 1915, p. 47 and Trans. Brit. Mycol. Sac. ^^I, 

 1921, p. 83) agree ^^ith Uredo anthoxanthina described b\' Bubak 

 {Ayin. MycoLui, 1905, p. 223) and differ from P. Anthoxanthi 

 Fckl. in the much smaller size of the uredospore sorus which 

 contains paraphyses and in the absence of teleutospores. 



Uredo anthoxanthina Bubak appears to be \\idely distributed 

 in Scotland, and has been discovered in the Tweed, Forth, Tay, 

 and Dee areas and in Arg\-ll and by Boyd in A^Tshire. It has 

 also been found in South Wales and is recorded by Grove from 

 Aber^•st^^■^i:h and in Worcestershire. 



A uredo-sorus of this species containing spores capable of 

 germination was found in March on a plant of Anthoxanthum 

 odoratiim which had been planted out in a garden in Edinburgh 

 in the autimin of 1920 when it was apparently uninfected. It 

 seems probable therefore that this species can sun-ive the %%inter 

 in the form of mycehum in the leaf. The persistence of the fungus 

 by means of uredospores is not however altogether excluded, as 

 these were present in the late autumn in the locahty from which 

 the plant was taken. 



Uromyces flectens Lagerh. 



Teleutospores on Trifolium repens. Ballinluig, Perthshire, 

 Oct. 1921. 



This species does not appear to have been definitely recorded 

 in Scotland. It was probably included under U. Trifolii {Scot. 

 Xat. 1S90, p. 304) {"U. apiculosa, Lev.") by Trail. The sori 

 are found on elongated swellings on the petioles. 



Melampsora reticulat-\e BMt. 



Uredospores on Salix reticulata L. Collected by Dr A. W. 

 Borth\^ick probably on one of the Perthshire mountains. 



Uredo-sori, h^^-pophyllous, small, scattered; uredospores ver- 

 rucose, angular, ovate or subglobose 20-27 x 17-20 /x ^^^th wall 

 about 2*5 /x thick; paraphyses numerous, capitate, 73-100/1 



