8. Gymnosporangium Photiniae (P. Hei 



Roestelia Photiniae P. Henn. Hedwigia 33: 231. 

 Aecia hypophyllous, gregarious, numerous, 

 crowded groups on thickened spots, cylindric, 0.2- 

 0.4 mm. in diameter by 3-4 mm. high; peridium 

 rupturing at apex, remaining tubular, becoming 

 somewhat cancellate in upper part; peridial cells 

 seen in both side and face views, oblong in side 

 view, 23-29 X 61-93 M> lanceolate in face view, 25- 

 35m broad, outer wall rather thin, 2-3/*, inner and 

 side walls rather thick, 5-7/*, densely and rather 

 sharply subspinulose; aeciospores broadly ellipsoid 

 or globoid, 17-18 X 19-23 y., wall dingy yellow, 

 moderately thick, 2.5-3.5 ju, evenly and moderately 



Telia unknown. 



For the ae( 



villosa De 



For the telis 



Type localit 



Yokohama, Japan, on Photinia laevis. 



Distribution: Japan. 



9. Gymnosporangium Amelanchieris (DC.) Ed. Fisch. Zeits. 

 f. Bot. 1: 711. 1909 



Aecidium Amelanchieris DC. Fl. Fr. 6: 97. 1815. 



Centridium mamillosum Chev. Fl. Env. Paris 1: 383. 1826. 



Centridium Amelanchieris Desm. PI. Crypt. 1377. 1845. 



Roestelia Amelanchieris Roum. Fungi Gall. 2732. 1884. 



Aecia hypophyllous, in small groups, borne 

 in gall-like, frustum-shaped protuberances 

 which are often coalescent, cylindric, 0.3- 

 0.5 mm. in diameter by 3-5 mm. high; pe- 

 ridium finally dehiscent at apex, becoming 

 somewhat split along the sides; peridial cells 

 usually seen in side view, rhomboid, 29-39 

 by 80-100^, moderately rugose on inner and 

 side walls, with ridge-like papillae of vary- 

 ing length, outer wall rather thin, 2-3/i, 

 inner and side walls rather thick, 7-9/i; 

 aeciospores broadly ellipsoid or globoid, 

 19-23 X25-29/Z, wall light chestnut-brown, 

 1.5-2/i thick, finely -\ 



