Pucdnia Gramineae. 13! 



Distichlis. 



52. Puccinia subnitens Diet. 



Dietel, Erythea, p. 81 (1895). 



II. Uredosori' hypophyllous, orange, powdery, soon naked and sur- 



rounded by ruptured epidermis, often in long lines and confluent 

 bullate. 



Uredospores yellowish-brown, globose to slightly ellipsoid, 

 densely echinulate, with 3-4 scattered germ-pores on one face 

 thick-walled, 21-23 p. diam. or 21-28 x 18-20 /u. 



III. Teleutosori similar to uredosori, but dark-brown. 



Teleutospores intermixed with uredospores, dark chestnut- 

 brown, oblong to clavate, rounded at both ends or slightly 

 tapering towards base, Slightly constricted at septum and 

 thickened at apex (4-7 ju), smooth, 28-46 x 19-23 jj. ; pedicel 

 persistent, yellow, up to 56 /z long. 



X. Mesospores not uncommon, similarly coloured to teleutospores, 

 obovate, rounded and thickened at apex (up to 7 /u), smooth, 

 28-37 x 19-22 ^ ; pedicel similar to that of teleutospore. 

 Darlucafilum Cast., common on uredosori. 

 On living leaves of Distichlis maritima Rafin. 



Victoria Flinders, Jan., 1902. Near Melbourne, April and 

 Nov., 1905, II., III. (Robinson). 



This species is quite distinct from P. distichlidis E. and E., which, 

 however, was originally found on Spartina gracilis Trin., the host-plant 

 being mistaken for a Distichlis. 



Arthur 7 has obtained some remarkable results by sowing the- teleuto- 

 spores of this species derived from Distichlis spicata Greene, on various plants. 

 The germinating teleutospores produced aecidia on three widely-separated 

 families of plants, viz. Chenopodiaceae, Capparidaceae, and Cruciferae. 



According to the Index Kewensis, D. spicata is a synonym of D. maritima. 



(Plate XXX., Figs. 262-264.) 



Phragmites. 



53. Puccinia tepperi Ludw. 



Ludwig, Zeitschr. f. Pflanzenk. II., p. 132 (1892). 



Sydow, Mon. Ured., I., p. 792(1904). 



Sacc. Syll. XL, p. 203 (1895). 



Sori epiphyllous, large, scattered or gregarious and confluent, up to 

 3 cm. long, firm, thick, pulvinate, erumpent, dark-brown ; 

 paraphyses in clusters, hyaline or pale yellow, capitate, thickened 

 at apex, up to 75 p long. 



II. Uredospores ellipsoid or pear-shaped, echinulate, pale yellowish, 



with as many as 9 scattered germ-pores on one face, 27-30 x 

 20-23 p. 



III. Teleutospores intermixed with uredospores, subcylindrical to 

 occasionally oblong, with rounded or acute slightly thickened 

 apex (4-5 /*), markedly constricted at septum and upper cell often 

 becoming detached, rounded or rarely attenuated at base, smooth, 

 yellowish-brown, occasionally 3-4 celled, 45-68 x 18-26 /i, 

 average 50 x 19 n; pedicel hyaline, persistent, up to 250 // long. 



