202 Excluded Species. 



3. UstilagO emodensis Berk. — I have received some of the origmal ma- 

 terial from Queensland through the courtesy of Bailey, and find that the 

 spores are developed in cavities in the tissues of the stem, so that it belongs 

 to the genus Melanopsichium Berk. 



4. UstilagO zeae (Beckm.) Unger=?7. maydis Corda. — The smut occur- 

 ring on Maize in Australia was naturally considered to be the common 

 American Corn Smut, and Dr. Cobb recorded it as such, but the examination 

 of a large number of specimens from different States showed it to be the 

 Head Smut. This smut generally confines itself to the inflorescence, hence 

 the name, and does not attack the leaves or stem, forming smut-balls, like 

 the other, It is quite a distinct genus, and the constant repetition of the 

 original error renders it necessary to emphasize the fact that the common 

 Corn Smut of America has not hitherto been found in Australia. 



5. Tilletia epiphylla B. and Br. — I am indebted to Bailey for a portion 

 of the type specimen, and at first sight it certainly looks like a rust with its 

 gregarious minute pustules. On examining the spores this suspicion is 

 found to be correct, as they are provided with 2-3 equatorial germ-pores on 

 one face, as shown in the photograph. (Plate L., Fig. 183). From its size, 

 colour, and markings it evidently belongs to Puccinia maydis Bereng, The 

 original specimen was sent to Berkeley, who determined it as a new species 

 of Tilletia, giving the size of the spores as 36 i^i diam., but he evidently ob- 

 served its rust-like character for he remarks — " Uredo maydis DC, is a much 

 larger plant, with much smaller spores. 



Then Massee^ in A Revision of the genus Tilletia gives the result of his 

 examination of the type specimen. He found the spore, instead of being 

 smooth "to be studded at regular intervals with very minute warts," and 

 concludes that — " the gregarious, small, linear pustules resemble a Puccinia 

 superficially." If he had only observed the germ-pores it would have shown 

 that there was more than a superficial resemblance. 



6. Graphiola phoenicis (Moug.) Poit. — This genus, with its most commonly 

 occurring species found on palm leaves in Queensland, is now generally ex- 

 cluded from the Smuts, although its systematic position has not been de- 

 termined. 



7. Cerebella Ces. — This genus, occurring in Queensland, with its two 

 species C. paspali Cooke and Mass. on Paspalmn scrohiculatum L., and 

 Anthistiria ciliata L. f. and C. andropogonis Ces. on Heteropogon contoHus 

 E. and S. — is now placed among the Hyphomycetes by Prof. Sa^cardo. 



