ON COMPOSITE 



137 



Teleutospores. Sori amphigenous, on brown orbicular spots, 

 densely gregarious and confluent in roundish clusters, 3 — 6 mm. 

 broad, occupying the whole spot, often circinate, long covered 

 by the epidermis, at length rather pulverulent, deep-brown ; 

 spores ovate to oblong, with a very minute paler apical papilla, 

 hardly constricted, rounded or slightly attenuated below, 

 smooth, pale-brown, 30 — 45 x 16 — 24 /a; pedicels hyaline, very 

 short. 



On Senecio Jacobaea. 



August- 



-November. Not common. 



Closely allied to the preceding species, but said to be distinguished by 

 its paler, narrower and longer spores which ai'e provided with a smaller 

 apical papilla. Moreover, the sori are said to be less dark in colour (not 

 darker as Plowright states), and are distributed more uniformly on both 

 leaf-surfaces. Nevertheless, I suspect they are identical. 



Distribution : Belgium. 



10. Puccinia Carlinae Jacky. 



Puccinia Hieracii Mart. ; Plowr. Ured. p. 184 p.p. 

 P. Carlinae Jacky, Compos. -Puce. p. 59, f. 14. Sacc. Syll. xvi. 297. 

 Sydow, Monogr. i. 35. Fischer, Ured. Schweiz, p. 216, f. 167. 



Spermogpnes. Epiphyllous and on the petioles, singly or in 

 groups. 



Uredospores. Sori amphigenous, without evident spots, 

 scattered, not confluent, mi- 

 nute, punctiform, pulverulent, 

 brown ; spores globose or 

 broadly ellipsoid, very deli- 

 cately echinulate, pallid- 

 brown, 24—30 x 20—25 fi; 

 epispore uniformly thick, with 

 three germ-pores. 



Teleutospores. Sori simi- 

 lar, but blackish-brown; spores 



ellipsoid to obovate-oblong, rounded at both ends or more often 

 attenuated downwards, not thickened above, hardly constricted, 

 delicately verruculose, brown, 25 — 35x16 — 20 //,; pedicels 

 hyaline, short. 



Fig. 89. P. Carlinae. Teleutospores. 



