160 Pucdnia Compositae. 



II. Uredosori umphigenous or frequently on stem, generally seated on 



minute spots, scattered, pulverulent, cinnamon-brown. 



Uredospores globose, sub-globose or ellipsoid, echinulate, pale- 

 brown, with one prominent germ-pore on one face, 21-25 /j. dianu 

 or 20-28 x 18-24 ft. 



III. Teleutosori amphigenous, often on stem, scattered or crowded, 

 punctiform, blackish to dark-brown, pulverulent, generally 

 roundish on leaf and up to 1 mm. diam., but often smaller, 

 elongated on stem and up to 2 mm. long. 



Teleutospores at first intermixed with uredospores, oblong, 

 ellipsoid or obovate, apex generally rounded, and not thickened, 

 routed at base or slightly attenuated, hardly constricted at 

 septum, dai'k-bro\v n, very delicately punctate, occasionally tri- 

 cellular, 30-49 x 17-24 /u, average 32 x 20 /.t ; pedicel hyaline, 

 generally deciduous, sometimes persistent and may reach a length 

 of 77 p. 



On Hypochoeris radicata L., very common. 



Victoria Dimboola, Nov., 1889 (Reader). Ardmona, 1894 

 (Robinson). Myrniong, March, 1900 (Brittlebank). Near 

 Melbourne, Apr., 1901. Dookie, Oct., 1903. Altona Bay, 

 Oct., 1903 (C. French, jun.). Murramurrangbong Ran 

 Dec., 1903 (Robinson). 



New South Wales Wagga (Maiden). 



On H. glabra L. 



Victoria Dimboola, Nov., 1889, and July, 1892 (Reader). 

 Queensland Brisbane, 1886 (Bailey "). 



The punctation on the teleutospores is so fine that it may easily be o 

 looked, but when the spores are mounted in water it is clearly seen. 



A specimen from Syd. Ured. Exs. 673 on H. glabra agreed very cl 

 the uredospores being on an average 25 x 21 ft, and the teleutos 

 34 x 18 ft. 



This species closely resembles in morphological characters P. hieracii 

 (Schum.) Mart., but Jacky has shown by means of cultures that the latter 

 can only grow on Hieracium species, and cannot be transferred to other 

 genera of Composites. Occasionally there may be a three-celled teleutospore 

 reaching a length of 56 p. 



P. microseris described as a new species in the Agricultural Gazette of 

 New South Wales was based upon a wrong determination of the host-plant 

 by the collector since it was afterwards found to be Hypochoeris radicata 



Darluca jilum Cast., is sometimes common on the mixed uredo 

 teleutosori. 



(Plate VIII., Figs. 62, 63.) 



Helichrys 

 88. Puccinia kalchbrenneri De Toni. 



De Toni in Sacc. Syll. VII., p. 645 (1888). 



Cooke, Handb. Austr. Fung., p. 337 (1892). 



Sydow, Mon. Ured. L, p. 93 (1902). 

 II. Uredosori on both surfaces, but mostly on under, seated on in- 

 determinate spots which are often confluent and variously coloured, 

 scattered or gregarious, minute, at first covered, convex, firm, 

 ultimately free and discoid, ochraceous. 



