THE RUbTS OF NOVA '"SCOTIA. FKASEE. 4T7 



& I. Pycnia and aecia on Oxalis corniculata L. (Not 

 collected in Nova Scotia). 



II. Uredinia amphigenous, scattered or aggregated, 

 elliptical or oblong, long covered by the epidermis, ruptured 

 epidermis prominent, yellowish-brown. Urediniospores glo- 

 bose, sub-globose or elliptical, 24-28 by 27-33/x, wall yellowish- 

 brown, finely and sparingly echinulate, pores 4, scattered. 



III. Telia amphigenous, scattered or somewhat gregari- 

 ous, linear or oblong, long covered by the epidermis, at length 

 naked, compact, black. Teliospores oblong, ellipsoid or 

 obovate, 16-24 by 27-41/*, rounded or obtuse, rarely somewhat 

 acute, base rounded or slightly narrowed, slightly constricted at 

 the septum; wall golden-brown, moderately thickened at apex, 

 about 2 J/A, smooth ; pedicel tinted, thickened, persistent, usually 

 about the length of the spore or somewhat longer. 



On Zea mays L., Lower Mount Thorn. 



In 1904 Arthur (Jour. Myc. 11:65. 1905) sowed aecio- 

 spores from Oxalis corniculata L. on young corn plants and 

 produced the uredinia and telia of this rust. In the following 

 year (Jour. Myc. 12:17. 1906) he sowed the teliospores from 

 the corn on Oxalis corniculata L. and aecia followed. Keller- 

 man (Jour. Myc. 12:10. 1906) confirmed the last result, pro- 

 ducing aecia on Oxalis corniculata by sowing the teliospores 

 from corn. 



The specimens in my herbarium were collected by Prof. 

 C. L. Moore. 



Puccinia triticina Erikss. 



Puccinia Rubigo-vera (DC.) Winter. 



Puccinia Rubigo-vera Var. Tritici, 



& I. Pycnia and aecia unknown. 



II. Uredinia amphigenous, mostly epiphyllous, scattered, 

 oblong, small, ferruginous. Urediniospores globose or sub- 

 globose, 20-27/x, sparingly echinulate, yellow. 



