2IO 



Addenda. 

 ADDENDA. 



AMARANTACEAE. 



Polycnemum. 



161. Uromyces polycnemi McAlp. 



I. Aecidia bright orange, generally covering lower surface of leaves, 



crowded, cylindrical, surrounded at base by ruptured epidermis, up 

 to H ram. long; pseudoperidia colourless, with toothed margin; 

 peridial cells oblong to somewhat lozenge-shaped, with moderately 

 thick striated margins, 37-40 p, long. 



Aecidiospores orange, ellipsoid to oblong or sub-globose, very 

 finely echimilate, 22-23 X 17-20 p or 20-22 p diam. 



II. Uredo-sori on both surfaces of leaf, bullate, at first covered by 



leaden-coloured epidermis, then splitting, scattered or gregarious, 

 sometimes confluent, up to 2mm. in diam. 



Uredospores ellipsoid to oval, orange coloured, finely echinulate, 

 with three equatorial germ-pores on one face, 28-32 X 18-22 p.. 



III. Teleuto-sori similar to uredo-sori, but generally larger and darker in 

 colour. 



Teleutospores dark golden-brown in mass, tawny brown indivi- 

 dually, ellipsoid to elongated ellipsoid, rounded at both ends, 

 occasionally slightly thickened at apex and germ-pore prominent, 

 smooth, 34-46 X 17-25/x; pedicel hyaline, persistent, compara- 

 tively short. 

 On Polycnemum pentandrum F.v.M. 



Victoria Port Fairy. Dec., 1905. 



The aecidia were very conspicuous, often covering the under surface of 

 every leaf, and as the host plants grew in dense masses, in the saline marshes 

 near the coast, it was difficult to find one without the rust. 



A Tuberculina was frequently parasitic on the aecidia. 



(Plate XLIIL, Fig. 319.) 



STYLIDIACEAE. 



Stylidium. 



152. Puccinia stylidii McAlp. 



II. Uredosori, p. 204. 



III. Teleutosori on both surfaces of leaf, dark-brown to black, round to 

 elliptic, sometimes confluent in long lines, pulvinate, splitting and 

 surrounded by epidermis, up to 1^ mm. or longer. 



Teleutospores at first intermixed with uredospores, bright chest- 

 nut-brown, clavate to oblong, smooth, slightly constricted at sep- 

 tum, rounded or bluntly pointed and thickened at apex (9-11 p), 

 rounded or attenuated at base, not infrequently three-celled, very 

 variable in shape and size, 40-62 x 17-28 ju; pedicel hyaline, 

 persistent, up to 45 p long. 

 X. Mesospores common, similarly coloured to teleutospores, thickened 



at apex, oval to ovoid or elongated ellipsoid, 30-40 x 15-23 p. 

 On leaves of Stylidium graminifolium Sm. 



Tasmania Devonport, Jan., 1906 (Robinson). 

 Only the uredospores were at first sent by Rodway in Nov., 1892, and 

 the discovery of the final stage shows that Uredo stylidii is a Puccinia, the 

 description of which is now completed. 



