hit; 



IT( < IMA 



"ii that plant. I am not certain that /'. punctata lives on G. Cruciata, 

 though I think I have Been it on thai host ; the two usual species on that 

 Qaliwm arc /'. Celakovskyana and /'. Valantiae (q.v.). 



The secidium seems to be less common than the other spore-forms: 

 I have seen it on G. Mollugo, G. verum and G. uliginosum. Mesosporea 

 have been observed on (/. paZustre, G. saxatile and G. verum. On 

 G. saxatile the teleutospores were slightly larger than in tin- normal form, 

 hut otherwise identical ; P. Valantiae, which occurs on that same host, is 

 easily distinguishable. 



Distribution : Europe, Siberia, North America, Chili. 



38. Puccinia Celakovskyana Bubak. 



Puccinio Celakovskyana Bubak, Ber. Bohm. Ges. Wissen. Prag, 1898, 

 p. 11. Wurth, Centralbl. f. Bakt. pt. 2, xiv. 212, 310, f. 2—3. 

 Sacc. Syll. xvi. 287. Sydow, i. 216. Fischer, Ured. Schweiz, 

 p. 335, 555, f. 247. 



Spermogones. Amphigenous, dark honey-coloured. 

 Uredospores. Primary sori surrounding the spermogones 



and un the same mycelium, 

 more or less circinate, sur- 

 rounded by a yellowish zone, 

 long covered by the epidermis, 

 dark-brown ; secondary, am- 

 phigenous, minute, scattered, 

 soon naked, pale chestnut- 

 brown or pale cinnamon; spores 

 globose to obovate, distinctly 

 echinulate, brown, 21 — 33 x 18 

 — 25 {a, with two nearly equa- 

 torial germ-pores. 



Teleutospores. Sori hypo- 

 phyllous, on brownish spots, thickly scattered, minute, roundish, 

 on the stems linear and up to 1 mm. long, soon naked, pulvinate, 

 black-brown ; spores oblong to clavate, rounded (very seldom 

 narrowed) above where they are much thickened (up to 1 1 //,) 

 and darker, faintly constricted, tapering below, smooth, chestnut- 

 brown, 35 — 56x17 — 25//.; pedicels hyaline, thick, persistent, 

 not as long as the spore ; an occasional mesospore is found. 



Fig. 11G. P. Celakovskyana. 



Teleutospores and uredospore 



