jr O Puccinia Compositae. 



COMPOSITAE. 



Scorzonera. 



74. Puccinia angustifoliae Me Alp. 



I. Aecidia in dense clusters on the leaves, more sparingly on stems, 

 about J to nearly mm. diam. ; pseudoperidia with finely laciniate 

 everted margins. 



Aecidiospores orange-yellow, globose to elliptical or sub- 

 quadrate, 16 x 11-13 p or 13-14 p diam. 



III. Teleutosori on leaf and stem, black, long covered by epidermis, 

 confluent, forming elongated patches, partially rupturing and 

 throwing off epidermis, distinct from or along with aecidia. 

 Teleutospores clavate to oblong, smoky-brown, slightly con- 

 stricted at septum, smooth, generally rounded and thickened at 

 apex (up to 9 /x), slightly tapering towards base or often 

 rounded, 40-53 x 16-21 //, average 50 x 20 ^ ; pedicel hyaline, 

 deciduous, generally short, up to 38 p, long and 9 ^ broad. 



X. Mesospores common, similarly colored to teleutospores. or paler, 

 generally somewhat oval, thickened at apex, 25-30 x 16-17 yu. 



On Scorzonera anguslifolia L. 



Victoria Dimboola, Nov., 1892, I., III. (Reader). 



This species differs from P. podospermi DC., P. scorzonerae 

 (Schum.) Jacky and P. tragopogi (Pers.) Corda, in the absence of 

 uredospores and the smooth teleutospores. 



(Plate VII., Fig. 53.) 



Brachycome. 



75. Puccinia brachycomes Me Alp. 



I. Aecidia crowded on swollen and distorted portions of leaves, also on 



stems and branches, about ^ mm. diam.; pseudoperidia round, 

 out-standing, with white, slightly everted, laciniate margin ; 

 pseudoperidial cells firmly united, oblong to sub-quadrate, punctulate 

 all over, with broad striated margin. 



Aecidiospores yellowish, sub-globose to ellipsoid, finely echin- 

 ulate, 13-16 p diam. or 13-16 x 10-13 //. 



II. Teleutosori elliptical, pustulate, black to blackish-brown, long 



covered by epidermis, crowded, confluent, and ultimately forming 

 elongated patches several mm. in length. 



Teleutospores clavate, dark chestnut-brown, smooth, very 

 slightly constricted at septum, 48-64 x 18-25 JJL, average 

 50 X 20 /JL ; upper cell truncate or conoid, occasionally rounded at 

 apex, thickened (up to 9 /JL) ; lower cell generally attenuated towards 

 base, sometimes rounded and generally longer than upper ; pedic 

 persistent, tinted or hyaline, up to 35 ju long. 

 X. Mesospores not uncommon, similarly coloured to teleutospores, 

 ellipsoid, either rounded or pointed, and thickened at apex, 

 28-30 x 14-19 p. 



On Brachycome ciliaris Less., L, III., and B. pachyptera Turcz., I. 



Victoria Dimboola, May -July, 1896 and 1898 (Reader). 

 On Brachycome scapiformis DC. and B. diversifolia, Fischer and Mey. 



Victoria Buffalo Ranges, Dec., 1904, L, III. (C. French, jun.). 

 Darluca filum Cast., is a very common parasite on the aecidia. 

 (Plate VIIL, Fig. 66.) 



