Ustilago. 159 



Sctaria. 

 14. Ustilago pertusa Tr. and Eaile. 



Tracv and E-irle, Bull. Torr. Rot. ('lul). p. IT.-) (189.-)). 

 Saccl Syll. XIV., p. 415 (1899). 

 Sori ill ovaries, hird, compact, black, finally pulvinato. 

 Spores small, globose, brownish, epispore covered with piominciit 

 irregular spikes, very constant in size, 5-1) /' diam. 

 On Setaria macrostachya H. B. and K. 



Queensland— 1890 (Bailey). 

 In the original description, the host is given as S. macrochaeta, but this is 

 evidently a misprint, as this grass does not occur in Australia. 



In U. viridis Ell. and Ev. the spores are slightly smaller, and form a yel- 

 lowish-green coat on the outside of the seeds. 



Ddiilhoiiia. 

 l.j. Ustilago reader! Sydow (in letter 1905). 



Ustila/o a/wp>jn' McAlp. Agr. Gaz. New South Wales, p. 154 



(189(5). ■ 



Sori in stems, leaves, and ovaries, black, pulverulent, usually destroying 



entire inflorescence, at first enclosed by the leaf-sheaths Avhen in 



ovaries, ultimately exposed and the spores dissipated, leaving the 



rachis bare or with the glumes still attached. 



Spores dark-brown, globose to ellipsoid, apparently smooth hut 

 delicately echinulate, 10-13 m diam. or 11-14 x 8-11 /'. 

 On Danthonia fznicillata F. v. M. — Wallaby grass. 



Victoria— Burnley and Ardmona, Oct., 1892 (Robinson). Dim- 

 boola, Nov., 1892 (Reader). Myrniong, Dec, 1900 and 1908 

 (Brittlebank). Kergunvah and Killara, Nov., 1902 (Robinson). 

 Casterton, Dec, 1905" (Reader). Darebin Creek, Oct., 190(i 

 (C. French, jun.). Cheltenham, Oct., 1906 (Robinson). Emerald, 

 Nov., 1906 (McLennan). Camberwell, Dec, 1907, Oct. and 

 Nov., 1908 (C. French, jun.). Rainbow, Oct., 1908. Plenty 

 Ranges, Nov., 19 9 (C. French, jan.^ Angustown, Dec. 1909. 

 New South Wales— Penshurst, Nov., 1908 (Cheel). 

 South Australia— Port Elliot, Nov.. 19()I (Summers). Blumberg, 



Nov., 1904 (Tepper). 

 Tasmania— Huon River, Jan., 1903 (Rodway). Ifoharf. -Ian.. !906 

 (Rodway). Devonport, Jan., 190') (Rol)inson). 

 On Danthonia sp. 



Victoria— Carombv, Oct.. 1889 (Teppi-i). Wliittle.sea Ranges. Nov.. 

 1898 (C. French, jun.) 

 U. danlhoniae Kalch. is (|uit(' distinct since the s])ores are given as 36 /( 

 diam. 



I'his snpt is not at iiU uiicammon on DnMth.oiiia. attacking thi> leaves 

 and stems as well as the inflorescence, and it has, unfortunately, received a 

 variety of names. The earliest specimen, found in Victoria in 1889. was sent 

 through Tepper to Professor Saccardo-, who deterjnined it as Ustilnqo Icuco- 

 derma Berk. Berkeley's species was characterized liy being clothed exter- 

 nally with a white rugged crust, and was afterwards found to be a Cintractia 

 and named C. leucoderma (Berk.) P. Henn.'^ It has been found on Ri/ucho- 

 sfora aurea Vahl. in Viutoria, but it i- (jiiite distinct from the smut on Dan- 

 thonia. 



