290 MVCOLOGIA 



then black-spotted on the upper surface, and producing hair-like 

 aecia on the lower surface. At this stage, there develops a dis- 

 colored area of pale-yellow or occasionally light-pinkish color 

 around the spot. 



III. Telia foliicolous or caulicolous, arising between scale-like 

 leaves, oljlate or hemispherical, fuscous or purplish-brown, later 

 pulvinate, 1-5 mm. when desiccated, attaining to soy-bean size with 

 moisture ; teliospores subglobose, broad-ellipsoid or f usoid, rounded 

 at both ends, sometimes papillate at the apex, occasionally with 

 narrowed base, 2-celled, the cells almost equal-sized, constricted, 

 30-35 X 25-30 /A, wall thin, 1-1.5/x thick, the pores 2 in each cell 

 near the septum, or i apically in the upper, 2 in the lower cell ; 

 colorless spores fusoid or ellipsoid, commonly narrowed at both 

 ends, 2-celled, each cell unequal, upper cell being 2-4 /x shorter 

 than the lower, slightly or not constricted, 30-37 x 17-25 /a, wall 

 thin, I fj. thick, the pores i apical or 1-2 lateral in the upper, and 

 1-2 lateral in the lower cell, lateral pores being located near the 

 septum; i-celled teliospores ellipsoid or ovoid, rounded at both 

 ends, or papillate at the apex, wall colored, 1-2 ju, thick, the pores 

 apical or lateral ; pedicels cylindrical, long, 3-4.5 fj. thick ; promy- 

 celia cylindrical or elongated like hyphae, curved, 3-septate, 10-12 [x 

 in diam. ; sterigmata 3-4 on a promycelium. cylindrical, 5-6 /x long ; 

 sporidia ellipsoid or ovoid, 10-13 x g-io jx. 



On Juniperus chinensis. 



Type locality: Mino province (Gifu-ken) Kawauye-mura, Mar., 

 1917 (K. Hara). 



The telia received a preliminary identification as G. haraeanum 

 by T. Hemmi and S. Ito, but after examining well-developed telio- 

 spores Hara became aware of its great difference from common 

 pear-rust Gymnosporangium and thought it to be a new form. 

 The inoculation was then carried out and he obtained positive 

 results on P. Zmni, and negative on P. Malus, P. Toringo and P. 

 sinensis. Hara also collected aecia from naturally infected P. 

 Zumi in August, 1916. 



Hara observed, on the other hand, a type of sorus arising from 

 the space between the scaly leaves of juniper, in this respect similar 

 to a telium. This form, becoming globose or hemispheric in shape, 

 is much lighter in color than the telium, being brown or rust- 

 colored, pulvinate, composed of numerous spores arranged in 



