410 THK RUSTS OF NOVA SCOTIA. — FKASER. 



ish-browii. Urediniosporcs globose, ellipsoid or ovoid, 17-22 

 by 22-33/x ; wall yellowish-brown, ecliinulate. 



III. Telia bypophyllous, scattered or often arraiigcMl in 

 circular groups, abundant, at length covering the under sur- 

 face of the leaf, confluent, rounded on leaves, elongate on stem, 

 remaining covered by the epidermis, blackish-brown, Telio- 

 spores clavate or oblong, 17-22 by 35-65/i, rounded, truncate 

 or pointed above, mostly narrowed toward the base, slightly 

 constricted at the septum, sometimes no constriction; wall 

 dark brown, thickened at apex, about 7^, smooth; pedicel 

 hyaline or slightly coloured, usually shorter than the spore. 



On Polygonum amphihium L., Pictou. 



This rust was only found in oiw place at Cole's Pond near 

 Pictou. It has a Avorld wide distribution on Polygonum 

 species. On some hosts the telia remain covered by the 

 epidermis, in others they are soon naked. 



Tranzschel was the first to show by cultures that the aecia 

 on the wild geranium belonged to this rust. Arthur (Jour. 

 Myc. 11:50. 1905) sowed the spores of Aecidluvi sanguino- 

 lentum Lindl. from Geranium maculatiun on Polygonum 

 emersum (Michx.) Britton and produced the uredinia and 

 telia of this rust In the following year he sowed the teliospores 

 from Polygonum emersum on Geranium niaculatum and the 

 aecia developed. 



I have not found the aecial stage, nor even the host plant, 

 in this vicinity. 



Puccinia punctata Link. 

 Piircinia (ralli Schw. 

 P. asprnilft Fuck. 

 0. Pycnia collected in small groups, honey-coloured. 



