156 



Puccinia Compositae. 



Centaur ec 

 82. Puccinia cyani (Schleich.) Pass. 



Passerini in Rabh. Fung. Eur., No. 1767. 



Sydow, Mon. Ured. I., p. 38 (1902). 



Sacc. Syll. VII., p. 634 (1888) ; XVII., p. 286 (1905). 



II. Uredosori mostly hypophyllous, scattered or crowded, minul 



orbicular or elliptic, pulverulent, reddish brown. 



Uredospores yellowish brown, globose, subglobose to ellipsoi( 

 finely cchinulate, with two germ-pores 011 one face, 25-27 

 19-24 ^ 



III. Teleutosori amphigenous, and on stem, scattered, pulverulent 

 dark-brown, orbicular to elliptic, soon naked, J-l mm. 



Teleutospores intermixed with uredospores, chestnut-browj 

 ellipsoid, rounded at both ends, unthickened at apex, not con- 

 stricted at septum, delicately warted, germ-pores conspicuoi 

 30-40 x 22-30 /u, average 32 x 24 yu ; epispore about 3 p thick 

 pedicel hyaline, short, deciduous. 



On leaves and stems of Centaurea, cyanus L. 



Victoria Near Melbourne, Jan. and Feb., 1904 (C. French, jr.). 



This is evidently of the Puccinia hieracii type. 

 The teleutospores are very regular and well defined, and there is n< 

 tendency to 'abnormality. 



(Plate VIII., Fig. 64.) 



Belli* 

 83. Puccinia distincta Me Alp. 



McAlpine, Agr. Gaz. N.S.W. VL, p. 853 (1895). 

 Sydow, Mon. Ured. I., p. 29 (1902), and p. 850 (1904). 

 Sacc. Syll. XIV., p. 311 (1899). 



I. Aecidia seated on discoloured spots, amphigenous, arranged in 

 circinate manner, or irregularly disposed, and often distribul 

 over entire surface ; pseudoperidia cup-shaped, with reflexed toi 

 margins, about J-J mm. diam. ; peridial cells elongated elliptical 

 oblong, punctulate all over, 25-29 x 13-19 //. 



Aecidiospores subglobose to oval or ellipsoid, orange-yellow, 

 very finely echinulate, 14-19 ^ diam , or 14-20 x 13-16 p. 



III. Teleutosori intermixed with and often surrounding aecidii 

 brownish black, oval, |-1 mm. long, generally confluent, burstii 

 through and surrounded by the leaden-coloured epidermis. 



Teleutospores chestnut-brown, clavate or oblong clavate, at 

 tenuated at base, smooth, constricted at septum, 34-50 

 15-21 p, average 42 x 17 /* ; upper cell generally darker 

 colour than lower, rounded and thickened at apex (up to 9 p) 

 pedicel persistent, pale yellow or coloured similarly to lower cell, uj 

 to 50 /z long. 



X. Mesospores numerous, elongated clavate to somewhat ovate, chest 



nut brown, usually thickened at apex, 34-37 x 13-16 /*. 

 On leaves, scapes, involucre and petals of Bellis perennis L. 



Victoria Near Melbourne, Oct., 1892, July-Oct,, 1904, L, III. 

 (Robinson). Korumburra, May, 1903, I. 



