1 58 



PUCCINIA 



Fig. 109. P. major. Te- 



leutospore, on C. palu- 

 dosa ; </. jecidia on leaf of 

 same, x A. 



Uredospores. Sori amphigenous, solitary, minute, cinnamon; 



spores subglobose to ovoid, distinctly 

 echinulate, brownish, 24 — 30 x 21 — 



26 fx. 



Teleutospores. .Sori chiefly hypo- 

 phyllous, similar, but blackish-brown. 

 standing singly, scattered over nearly 

 the whole leaf-surface; spores ellipsoid 

 to ovoid, rounded at both ends, not 

 thickened above, hardlv constricted, 

 veiy delicately verruculose, chestnut - 

 brown, 33 — 48 x 22 — 30 /x ; epispore 

 thin: pedicels short, deciduous. 



On Crepis paludosa. .Ecidia in June : uredospores, mixed 

 with teleutospores, August and September. Yorkshire (Sop- 

 pitt), Braemar (Trail), Dolgelly, Wales, and in Ireland. 

 (Fig. 109.) 



This species was formerly considered a variety (major) of P. Lapsanae 

 on account of the larger spores, but is now kept separate. Dietel proved 

 by cultures that the uredo- and teleutospores are connected with the 

 aecidial generation. From P. Crepidis, on Crepis vrrens, it is said to be 

 distinguished, not only by the size of the spores, but also by the difference 

 in the way in which the secidia occur on the leaves ; the minute, black, 

 solitary teleuto-sori seem also different. 



Distribution : Northern and Central Europe. 



32. Puccinia Hieracii Mart. 



Credo Hierorii Schum. Enum. PI. Sail. ii. 232. 



TrirhoLasis Hieracii Cooke, Micr. Fung. p. 224 p.p. 



Puccinia Hieracii Mart. Fl. Mosquen. p. 226. Cooke, Micr. Fung. 



p. 207 p.p. Plowr. Ured. p. 184, p. min. p. Sacc. Syll. vii. 



633 p.p. Sydow, Monogr. i. 95. Fischer, Ured. Schweiz, p. 230, 



f. 181. 



Bpermogones. In little yellowish clusters on leaves and 

 stems. 



Uredospores. Sori amphigenous, usually epiphyllous, on 

 pale spots which are sometimes hardly perceptible, scattered, 

 scarcely confluent, minute, punctiform, soon naked, pulverulent, 



