HiRATSL'KA : -On Two Si'Ecfks of Coleofporkint. Parasitic on the Japanese Composit.'e ^2 f 



days after inoculation, numerous uredosori appeared on the inoculated leaves of 

 the host plant. 



Tranzsciikl'^ reported in his paper, PerUcniiiiini on Pinus puinila collected 

 in Kamchatka as Cokosporiiim sp. He described only the short diagnose of the 

 aecidial stage in Russian, and did not write any remarks of its teleuto-host. 

 But, the description of his fungus is incomplete, so the writer can not compare 

 it with the aecidial stage of Colcosporiutn Saiissjtreac Tiiöm. 



The writer mentioned abo\'e that Cokosporinvi Eupatorii and C- Saussuyeae 

 produce the aecidial stage on Pinus koraiaisis and P. putnila, respectively. 

 These two species of Pinus belong to the same section Strobus. 



III. The description of Coleosporium Eupatorii ARTH. 

 and C. Saussureae THUM. 



1. Coleosporium Eupatorii Akihur 



in Bull. Torr. Bot. Club. XXXIII, p. 31. 1906; in N. Amer. Fl. VII, p. 

 90 (1907), p. 654 (1924)— Sacc. Syll. XXI, p. 719 — SvD. Monogr. Ured. Ill, 

 p. 607. (FrjiKURO in Transact. P'ormosa Nat. Hist. Soc. XIX, p. 9, 19 14). 



Syn. Coleosporium Yaviadai MruRA in sched. 



Spermogonia subepidermal, low-conical, 0.57-0.76 mm. long by 0. 28-0.6 

 mm. broad, 55.8-64.8 n high. 



Aecidia hypophyllous, flattend laterally, 0.S-3.0 mm. long by 1.0-1.8 mm. 

 high; pseudoperidia delicate, hyaline; peridial cells ovoid to ellipsoid in face 

 view, 50.4-72.0x23.4-34.2 //, often acutish at one or both ends, slightly over- 

 lapping and easily separating, the side walls 5 -4-' 00 ft thick, the inner wall 

 rather finely verrucose with low papillae of irregular outline ; aecidio.spores ob- 

 long, 23.4-32.4x18.0-23.4 ii\ epispore 1.8-3.O /i, closely and moderately ver- 

 rucose. 



Uredosori hypophyllous, scattered, small, round, 0.2-0.3 nim. across, soon 

 pulverulent, brownish yellow to pale yellow ; uredospores globose, ellipsoidal or 

 ovate, 18.0-27.0 X 15.0-21.O // ; epispore densely verrucose, colourless, i.5-2.0/i 

 thick ; contents pale yellow to hyaline. 



1) 1. c. 



