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im .-] NOTES ON THE JAPANESE FUNGI. 49 



5. In the axil of stamens or in place of pistils prolification may 

 take place. 



6. The anther is sometimes represented as four wing-like processes 



(Fig- 4/). 



7. In place of the ovule a large lobe is found in some phyllomorphic 

 pistils. The lobe seems to correspond to the integuments of the ovule 

 while its nucellus is represented as a papilla on the center of the lobe. 

 In a completely phyllomorphic pistil the lobe becomes less distinguishable 

 from the serratures up and down of it (Fig. 4 j-l). 



In transforming floral organs into leaves the fungus must act upon 

 them before their embryonal development has ended. (1) As they are already 

 differentiated at the beginning of winter (December), we are inclined to 

 believe that the infection of the fungus would take place in autumn or 

 earlier. It is quite obvious that such an earlier infection may be effected 

 by the perennial mycelium, but it is difficult to explain how the spore- 

 infection, the necessary means for the propagation of the fungus from tree 

 to tree, may take place in such period. Cseoma being an aacidial form of 

 certain Uredinege, the formation of teleutospores is very provable. To 

 determine whether sporidia derived from teleutospores or secidiospores 

 themselves (2) may infect Prunus Mume, is of great interest and importance. 



Cceoma Mahinoi resembles in its habits Cceoma radiatum Shir on 

 Prunus Pseudo-Cerasus Lindl. According to Shirai the sori and spermo- 

 gonia of the latter species make their appearance at different places of the 

 affected organ, sori occuring on the upper surface of the leaves, while 

 spermogonia are found on the stipules or bracts. It has much larger spores 

 but far smaller sori than Cceoma MdkinoL The other noteworthy differ- 

 ence between two species is the respective influence which they play upon 

 their host. While in Cceoma radiatum it is reported that the perennial 

 mycelium causes on the branch the phenomenon known as " witch's broom," 

 no such action has ever been observed in the case of Cceoma Mahinoi. 



Through the kindness of Dr. G. Yamada, professor of the Higher 

 Agricultural and Dendrological School at Morioka, I obtained specimens of 



(1) Peyritch, Zur Aetiologie der Chloranthien einiger Arabis-Arten. Jahrb. f. wiss. 

 Bot. XIII. 1882. P. 1. 



(2) W. Brandi, Hedw. XLII. 1903. P. 118; Barclay, Trans. Linn. Soc. 1891, P. 141- 

 151; Pietel, Zeitschrift. f. Pflanzenkrkh. III. 1893. P. 258; — , Flora 81. 1895. P. 394. 



