Puccinia Gramineae. 115 



X. Mesospores fairly numerous, similarly coloured to teleutospores or 

 lighter, oval to elongated elliptical, thickened at apex, 24-30 x 

 12-14 p . 



On Deyeuxia forsteri Kunth. = Agrostis solandri, F.v.M. 



Victoria Near Melbourne, 1892 (Robinson). Ardmona, Oct.- 

 Dec., 1894 (Robinson). Arthur's Creek, Aug., 1902 

 (Robinson). 



New South Wales (Cobb 2 ). 



Through the kindness of Dr. Plowright, I received some of the original 

 material, and there is a general agreement in the spores. 



Dr. Cobb has described and drawn an unnamed species of Puccinia on 

 Deyeuxia forsteri, which undoubtedly belongs to the same species. The 

 teleutospores are given as 44-58 x 16-22 p, but the uredospores are rather 

 larger, being 25-30 x 21-25 p. 



The life-history of this species was made out by Dr. Plowright, who found 

 after several experimental cultures, that the teleutospores produced Aecidium 

 aquilegiae Pers. on Aquilegia vulgaris, and that the spores of A. aquilegiae 

 when applied to Agrostis alba, and Poa pratensis produced the rust. 



(Plate III., Fig. 27.) 



Anthoxanthum. 



36. Puccinia anthoxanthi Fckl. 



Fuckel, Symb. Myc. II., p. 15 (1873). 

 McAlpine, Agr. Gaz. N.S.W. VII., p. 301 (1896). 

 Sydow, Mon. Ured. I., p. 727 (1903). 

 Sacc. Syll. VIL, p. 665 (1888). 



II. Uredosori on both surfaces of leaves, solitary or in elongated 



groups, elliptic or linear, confluent in lines, soon naked, pulver- 

 ulent, dusky orange. 



Uredospores yellowish-orange, elliptic to obovate, finely echinu- 

 late, with two to four very distinct equatorial germ-pores on one 

 face, 25-32 x 15-20 /*. 



III. Teleutosori scattered, minute, dark-brown to black, elliptic, naked, 

 surrounded by ruptured epidermis. 



Teleutospores at first intermixed with uredospores, chestnut- 

 brown, elliptic to obovate or oblong-clavate, smooth, slightly 

 constricted, rounded and thickened (6 p) at apex, occasionally 

 tricellular, 28-48 X 15-21 p, average 35 X 20; upper cell 

 usually darker than lower; pedicel persistent, tinted, 

 20-25 x 6-7 p, sometimes reaching a breadth of 10 p. 

 X. Mesospores occasional, similarly coloured to teleutospores, obovate, 



thickened at apex, average 35 x 17/7. 

 On sheath, flag and inflorescence of Anthoxanthum odoratum L. 



Victoria Near Melbourne, Dec., 1896, II. Rutherglen, Dec., 



1903, II., III. Leongatha, Feb., 1904., II. 



The teleutospores were not very common. In my own garden, near 

 Melbourne, the uredo-stage was plentiful, but no teleutospores were found, 

 while at Rutherglen the teleuto- stage occurred on several specimens. 



(Plate III., Figs. 20, 21.) 



