Uromycladium Leguminosae. 1 1 1 



Acacia. 



33. Uromycladium tepperianum (Sacc.) McAlp. 



Saccardo, Hedw. XXVIII., p. 126 (1889). 

 Cooke, Handb, Austr. Fung., p. 331 (1892). 

 Sacc. Syll. IX., p. 291 (1891). 

 Uromyces tepperianus Sacc. 



O. Spermogonia minute, ruddy at first, then black, brownish by trans- 

 mitted light, depressed globose, 150 JJL diam. 



Spermatia hyaline, ellipsoid, 3-3 J x 2-2 J ju. 



III. Teleutosori on the leaves or phyllodes forming swollen distorted 

 gall-like masses along their whole length, and on the branches 

 long and broadly effused, or large somewhat spherical galls coated 

 with cinnamon to chocolate- brown powdery spores. 



Teleutospores in clusters of three, sphaeroid to depressed 

 globose, cinnamon brown, thickly channelled and striate, striae 

 converging towards apex, slightly thickened in upper portion of 

 wall, 14-17 X 18-25 p ; sporophore hyaline, elongated, soon 

 deciduous. 



On branches of Acacia salicina Lindl. ; A. hakeoides A. Cunn. ; A. 

 myrtijolia Willd.; and A. spinescens Benth. 



S. Australia Blackhills, Sandy Creek, Murray Bridge, etc., 



Dec., 1889 and 1892 (Tepper). Dec., 1901 (Molineux). 

 On phyllodes and branches of A. armata R. Br.; A. implexa Benth.; 

 A. juniperina Willd. ; A. melanoxylon R. Br.; A. pycnantha Benth.; A. 

 rigens A. Cunn.; A. siculiformis A. Cunn.; A. vomeriformis A. Cunn. 



Victoria Mallee near Hopetoun, Oct., 1903 (C. French, jun.). 

 Ringwood, Aug., 1904, (C. French, jun.). Werribee Gorge, 

 Jan., 1905, (Brittlebank). Oakleigh, Jan., 1905. Little 

 River, Jan., 1905, (C. French, jun.), and Feb., 1905. 

 Cheltenham, May, 1905, (Robinson). Myrniong, July, 1905. 

 Mt. Macedon, 1882, and Murray River, 1874, from types of 

 A. siculiformis and A. vomeriformis in National Herbarium, 

 Melbourne. Common around Melbourne. 

 On A. diffusa Lindl. ; A. verniciflua A. Cunn. ; A. verticillata Willd. 



Tasmania. Hobart, March- April, 1905 (Rodway and Lea). 

 On Acacia lonyifolia Willd. 



New South Wales Rose Bay, near Sydney, July, 1905 (Froggatt). 

 On branches and phyllodes of A. erioclada Benth., and A. glaucoptera 

 Benth. 



West Australia From types of host in National Herbarium, 



Melbourne. 

 On Acacia stricta Willd. 



Tasmania Gordon, D'Entrecasteaux Channel, Nov., 1905 (Rod- 

 way). 



This species was first described and illustrated by Saccardo in 1889, 

 who considered that the unicellular teleutospores were borne singly on long 

 stalks, hence he placed it in the genus Uromyces. He failed to observe, 

 however, that each sporophore bore a cluster of three in a head. It is the 

 most widespread of all the known forms being found on nineteen different 

 species of Acacia, and it shares the property with V. notabile of producing 

 galls. This is particularly noticeable in the Golden Wattle (A. pycnantha}, 

 where the galls are as large as potatoes, and in some of the Wattle 

 plantations where the trees are cultivated for their bark they hang in 



