158 



Puccinia Com$ositae. 



Gnaphali 



85. Puccinia gnaphalii (Speg.) P. Henn. 



Hennings, Hedw. XLL, p. (66) (1902). 

 Morrison, Victorian Nat. XL, p. 120 (1894). 

 Sydow, Mon. Ured. I., p. 88 (1902). 

 Sacc. Syll. XVI., p. 295 (1902). 

 Uredo gnaphalii Speg. Fung. Arg. IV., p. 28 (1882). 

 Puccinia gnaphaliicola P. Henn. Hedw. XXXVIII., p. (68) 

 (1899j. 



II. Uredo-sori common on stem and leaves, on the latter amphigenous,. 



but mostly on under surface, bursting through and surrounded by 

 epidermis, also piercing woolly tomentum, scattered, sometimes; 

 aggregated, compact, cinnamon, circular or oval, lenticular on 

 stem, ^-i | mm. diam. 



Uredospores globose, sub -globose or ellipsoid, brown, finel 

 echinulate, 21-24 /* diam. or 21-26 x 17-21 p. 



III. Teleutosori similar, but chestnut-brown to black. 



Teleutospores at first intermixed with uredospores, oblong o: 

 oblong-clavate, dark chestnut-brown, slightly constricted at septum,, 

 rounded or obtusely pointed or even beaked at apex, and 

 thickened (up to 8 /i), usually slightly attenuated towards base 

 smooth, 35-53 x 15-24 p, average 48 X 20 p, ; pedicel hyaline,, 

 persistent, up to 66 x 8 p. 



X. Mesospores similarly coloured, few, oval or elongated, ellipti 



thickened at apex and sometimes beaked, 24-38 x 15-18 /i. 

 On stems and leaves of Gnaphalium purpureum L., and G. japonic 

 Thunb. 



Victoria Oakleigh, Jan., 1904 (Morrison). Drysdale, Jan., 189 

 and Oct., 1903. Whittlesea Ranges, Nov., 1898 (C. Frenc 

 jun.) Killara, Oct., 1902. Near Melbourne, Feb. and Nov 

 190-1. Murramurrangbong Ranges, Nov., 1904 (Aitken). 

 The teleutospores are rather variable in length and breadth, sometime 

 being short and stout and sometimes rather elongated and slender. The 

 pedicels average 40-50 p. in length, and may vary in breadth from 4 p. up 

 10 p. at junction with spore. Sydow gives size of teleutospores as 32-56 

 18-24/1, and Dietel as 30-35 x 19-22 p. 



I am indebted to Dr. Morrison for some of the original material f: 

 which he determined this fungus as P. investita Schwein. He found sp 

 mogones immersed among spores in the sori, and the spermatia were fu 

 form. Plenty of Darluca filum Cast., was found, and no doubt these we 

 mistaken for spermogonia. 



(Plate VII., Fig. 57.) 



Heliai 



86. Puccinia helianthi Schwein. 



Schweinitz, Syn. Carol., p. 73 (1821). 

 Cooke, Handb. Austr. Fung., p. 333 (1892). 

 Sydow, Mon. Ured. I., p. 92 (1902). 

 Sacc. Syll. VII., p. 603 (1888). 

 [O. Spermogonia honey-colored, in small clusters.] 



[I. Aecidia crowded or orbicular, or arranged in broadly expandu^ 

 oblong *spots ; pseudoperidia cylindrical, plane, with white laciniate 

 margins. 



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