Puccinia Compositae. 157 



Tasmania Near Huon Road, Nov., 1890, I. (Rodway). 

 South Australia Norwood, April, 19Q3, I. } III. (Tepper). Port 

 Pirie, Oct., 1903, J., III. (Dickens). 



Aecidiospores abundant from April to September, and even to January. 

 The aecidia may even occur on the petals, and they have been described 

 before the Microscopical Society of Victoria as early as 1880. 



Teleutospores in October or November, although they occur sparingly as 

 early as April. The spots are generally pale-yellowish to pale greenish in 

 colour. This aecidium from Victoria was determined by Cooke as A. bellidis 

 Tlmem., which belongs to P. obscura Schroet., but now that the teleutospores 

 belonging to it have been found on the same host-plant the Puccinia is seen 

 to be a distinct species. 



(Plate VIIL, Fig. 67 ; Plate E., Fig. 26.) 



Erechtites. 



4. Puccinia erechtitis Me Alp. 



McAlpine, Proc. Roy. Soc. Vic. VII., N.S., p. 216 (1894). 

 Sydow, Mon. Ured. I., p. 78 (1902). 

 Sacc. Syll. XIV., p. 309 (1899). 



0. Sperinogonia on brownish patches on upper surface of leaf, in groups, 



brown to honey-colour, yellowish by transmitted light. 

 Spermatia hyaline, oval, 3 /JL long. 



1. Aecidia on stem and leaves, causing distortion and swelling, pale- 



yellow at first, becoming orange-yellow, arranged close together in 

 lines or irregularly ; pseudoperidia cup-shaped, with white, torn, 

 revolute edges ; peridial cells firmly united, warted all over, 

 lozenge-shaped, and nearly iso-diametric, or elongated and oblong, 

 with striated margins. 



Aecidiospores variable in shape, irregularly globose or elliptic 

 orange-yellow, smooth, 16-19 x 12-17 /i. 



III. Teleutosori long covered by epidermis, crowded together, 

 pulvinate, black. 



Teleutospores clavate to oblong, yellowish-brown, constricted 

 at septum, smooth, 41-57 X 17-25 p, average 47 X 19 p. ; upper 

 cell dark-brown, rounded or pointed, occasionally truncate and 

 thickened at apex ; lower cell usually yellowish-brown and tapering 

 towards base, elongated wedge-shaped ; pedicel persistent, pale- 

 yellow or hyaline, up to 40 ju long and 9 p broad. 

 X. Mesospores common, coloured like teleutospores, elongated oblong 



or oval, thickened at apex, 32-43 X 13-17 //. 



On leaves and stems of ErechtitesquadridentataDC., and E, argutaT>Q. 

 Victoria Ardmona, Dimboola, Myrniong, and Marysville, Alps 



near Bright, and Mt. St. Bernard, &c. 

 On E. quadridentata, E. arguta and E. pren&nthoides DC. 



Tasmania Huon Road, Dec., 1891, March, 1893, I. (Rodway). 



On Erechtites sp. 



New South Wales Guntawang, I. (Hamilton). 



I. Very common all the year round, except during middle of summer. 

 III. From January to June, but not so common. 



The New South Wales specimen was named Aecidium senecionis Desm. 

 by Cooke. 



(Plates VII., Fig. 59; XXVII., Fig. 240.) 



