Puccinia Gramineae. 113 



Uredosori when present, generally minute and flattened, sometimevS 

 paraphysate. 



Uredospores globose, sub-globose, ellipsoid or ovate, originating singly 

 on the terminal ends of the hyphae, with germ-pores mostly in pairs or 

 several, rarely one, never smooth. 



Teleutosori variable in size, flattened or pulvinate, sometimes para- 

 physate. 



Teleutospores separate, variously shaped, pedicellate, 1 -septate, with 

 one germ- pore in each cell. 



Sporidiola ovoid or reniform, generally hyaline. 



Australian species, 90. 



GRAMINEAE. 



Agropyron, Clematis. 



34. Puccinia agropyri Ell. & Ev. 



Ellis and Everhart, Journ. Myc. VII., p. 131 (1892). 



Sydbw, Mon. Ured. L, p. 823 (1904). 



Sacc. Syll. XI., p. 201 (1895). 



Aecidium clematidis DC. Fl. franc. II., p. 243 (1805). 



0. Spermogonia amphigenous, honey-coloured, in clusters on leaves, 



accompanying aecidia. 



Spermatia hyaline, globose, minute, 3 ^ diam. 



1. Aecidia hypophyllous, on definite spots, bright orange, in irregular 



clusters ; pseudoperidia cup-shaped, flattened, with reflexed lobed 

 margin ; peridial cells piriform to quadrate, striated at margin 

 and punctate all over, 28-32 X 16-22 p. 



Aecidiospores orange-yellow, ellipsoid to sub-globose, finely 

 echinulate, 21-29 X 16-19 ju, or 20-22 p diam. 



II. Uredosori epiphyllous, rarely on under surface, minute, elliptic or 



linear, sometimes confluent, yellowish to orange. 



Uredospores orange yellow, elliptical to ovoid, finely echinulate, 

 4-5 scattered germ-pores on one face, 25-32 x 19-22 ju, 

 epispore up to 2|- ^ thick. 



III. Teleutosori hypophyllous, minute, covered by the leaden-coloured 

 epidermis, at length occasionally erumpent, oblong or linear, 

 sometimes forming lines on sheaths. 



Teleutospores yellowish brown, cylindric clavate to elongated 

 oblong, smooth, slightly constricted at septum, variable in size, 

 40-70 x 12-25 ^u, average 60 x 18 ^ ; upper cell rounded or 

 squarely truncate at apex and decidedly thickened (6-9 /u), some- 

 times broader than long, darker in colour than lower, 19-29 x 

 16-25^; lower cell tapering towards pedicel or oblong, usually 

 longer and narrower than upper, 25-41 x 12-20 /j, ; pedicel short, 

 generally tinted. Occasionally three-celled teleutospores occur. 

 X. Mesospores occasional, pale brown, elongated, rounded, or slightly 

 pointed and thickened at apex, slightly tapering towards base, 

 40-48 x 13-16 ju, with short coloured pedicels. 

 Aecidiospores on Clematis aristata R. Br. 



Victoria. Murramurrangbong Ranges, Dec., 1903, and Jan., 



1905 (Robinson). 

 Uredo and teleutospores on Agropyron scci/irum Beauv. 



Victoria Near Melbourne, Dec., 1892 (Robinson). Myrniong, 

 March, Nov., Dec., Jan. Murramurrangbong Ranges, 

 Dec., 1903 (Robinson). 



