! j g Puccinia Gramineae. 



On leaves and sheaths of Kottboellia compressa L. 



Victoria Creswick, Jan., 1893, II. (Robinson), Werribee Gorge, 

 Dec., 1902, II. Killara, March, 1903, II., III. (Robinson). 

 Kergunyah, Dec., 1903, II. (Robinson). Near Melbourne, 

 Nov. and Jan., 1904. Various other localities. 

 Queensland II. (Bailey 1 ?). 



The Queensland specimen is labelled Puccinia straminis DeBary. 

 The chocolate-brown colour of the uredospores is very characteristic. The 

 uredo-stage of this species was first described by Dietel on a specimen from 

 Japan; on sending him some of our material he agreed that it was the 

 same. Sydow in his Monograph (p. 800) has described a Puccinia on 

 R. arundinacea with teleutospores alone, which however do not agree with 

 these, being thickened at the apex up to 10 p and 34-56 x 22-27 /z in size. 

 The uredosori frequently look quite black owing to the presence of 

 Darluca filum Cast. 



(Plate XXX., Figs. 259, 260.) 



Cynodon. 

 40. Puccinia cynodontis Desm. 



Desmazieres Exsicc. III., No. 655. 



McAlpine, Agr. Gaz. N.S.W. VII., p. 150 (1896). 



Sydow, Mon. Ured. L, p. 748 (1903). 



Sacc. Syll. VII., p. 661 (1888). 



P. altera McAlp., Agr. Gaz. N.S.W. VII., p. 151 (1896). 



II. Uredo-sori on both surfaces, minute, ellipsoid to lenticular, scat- 



tered or confluent, yellowish-brown to rusty -brown, soon naked, 

 compact. 



Uredospores globose to shortly elliptical, yellowish-brown to 

 brownish-yellow, delicately verrucose, 20-25 p diam., or 20-25 x 

 17-22 p. 



III. Teleutosori roundish to ellipsoid or oblong, scattered or confluent, 

 pulvinate, black. 



Teleutospores intermixed with uredospores, variously shaped, 

 ellipsoid or oblong, smooth, chestnut-brown, slightly constricted at 

 septum, occasionally tricellular, 30-50 x 15-21, average 35 x 

 21 \i ; upper cell thickened at apex and generally elongated 

 pointed, sometimes rounded ; lower cell rounded at base or 

 attenuated ; pedicel firm, pale yellow, persistent, elongated up 

 to 73 p. 



X. Mesospores plentiful, dark-brown, ellipsoid, rounded and thickened 

 at apex, 24 x 19 /t . 



On Cynodon dactylon Pers. 



Victoria Burnley, Caulfield, Armadale, Pakenham, Killara, 

 Somerville, &c., Oct. -March. 



On some plants the teleutospores were of a very regular ellipsoid shape, 

 and rounded and thickened at apex, so that it was at first thought there 

 were two species on the same plant. But on examining a number of 

 specimens every gradation was found from the teleutospore, rather constant 

 in size and shape with rounded apex, to those necessarily longer on which 

 the thickened apex was somewhat conical. 



