T 1 6 Puccinia Gramineae . 



Beckmannia. 

 37. Puccinia beckmanniae Me Alp. 



II. Uredosori on both surfaces of leaf, but most common on under, 



orange, elliptic, often confluent in lines, erumpent and surrounded 

 by ruptured epidermis. 



Uredospores orange, elliptic, echinulate, with 3 to 4 equatorial 

 germ pores on one face, 25-29 x 16-19 f.i. 



III. Teleutosori minute, black, linear, hypophyllous, long covered by 

 epidermis, ultimately naked, about J mm. long. 



Teleutospores yellowish-brown, elongated clavate, not or only 

 slightly constricted at septum, upper cell generally darker than 

 lower and with numerous (up to 7) finger like processes, 

 45-60 X 16-25 p, average 56 X 18 ; pedicel very short or 

 absent. 



X. Mesospores brown, oblong to elongated elliptical, thickened at apex, 

 and either bare or with short stumpy processes, 32-35 x 13-16 



On Beckmannia erucaeformis Host. 



Victoria Leongatha, February, March, 1904, II., III. 



Only uredospores were met with in February, but by March the teleu- 

 tospores had developed. There is a general agreement with P. lolii, but the 

 upper cell of teleutospore is generally broader. 



The grass on which this rust was found was grown from seed sent 

 the United States Department of Agriculture for trial, and the spoi 

 must have been imported with the seed. Holway informs me that he has 

 collected it in the State of Minnesota, and kindly forwarded me a specimen. 



Darluca filum Cast., was very plentiful, both by itself and in conjunction 

 with the rust. Probably in the former case it was parasitic on the hidden 

 mycelium, and may have largely prevented spore formation. 



(Plate IL, Fig. 12.) 



Bromus. 

 38. Puccinia bromina Eriks. 



Eriksson, Ann. Sci. Nat. IX., p. 271 (1899). 

 Sydow, Mon. Ured. I., p. 712 (1903). 

 Sacc. Syll. XYIL, p. 382 (1905). 



Puccinia dispersa, f. sp. bromi, Eriks. 



II. Uredosori 1-1 Omm. long, 1mm. broad, ferruginous, on leaf blade 



chiefly on upper surface, crowded, sometimes on sheath and 

 panicle. 



Uredospores bright orange, ellipsoid, with numerous scattered 

 gerni-pores, as many as 11 on one face, echinulate, 27-31 x 

 18-24 p. 



III. Teleutosori elongated elliptical to oblong, black to dark-brown, 

 hypophyllous, scattered or subgregarious, sometimes on sheath and 

 panicle, covered by epidermis, divided into compartments, and 



Lch compartment separated by elongated, cylindric, or slightly 

 clavate, yellowish-brown, barren filaments or paraphyses. 



