Tanaka: New Japanese Fungi 



285 



Kern brings this into the synonymy with G. photiniac (in Mem. 

 N. Y. Bot. Gard. 6: 246. Aug., 1916). Successful inoculation 

 of Cydonia japonica by the pear Gymno sporangium was also re- 

 ported by Yoshino (1. c. p. 168), Hori (1. c. p. 309) and Ito (1. c. 

 p. 182). According to Yoshino (in Shok. Zass. 20 232 : 91. M. 39, 

 v, May, 1906. Japanese), Ideta (1. c. ed. 4, p. 467) and Ito (1. c. 

 4 5 : 327), natural infection of European pear (Pyrus communis) 

 is found but of slight extent, and Hori adds Pyrus Toringo and 

 Cydonia sinensis as incidental hosts (in Hori's Nosakumotsu Byo- 

 gaku, [Discourse on plant diseases] , 7 impr. 191 1. p. 292. Japa- 

 nese). Ideta first reported that G. asiaticum occurs also on the 

 leaves and stems of Juniperus rigida (in Shok. Zass. 18 211 : 157- 

 158. M. 37, viii, Aug., 1904. Japanese), but later he corrected 

 the statement in accordance with Miyabe's inoculation tests, that 

 the leaf -inhabiting form only can produce aecia on pear leaves (1. c. 

 18 213 : 223. Oct., 1904. Japanese). Later investigators all 

 agreed with Ideta's final statement (see Hara, in Engei no Tomo 

 [Friend of Hort.] 13 9 : 811-812. T. 6, ix, Sept., 1917. Japa- 

 nese), except Ito who doubts these statements because only excep- 

 tional species can infect both the Sabina and Oxycedrus groups 

 of juniper (in Byochu-gai Zasshi 4 3 : 182-183). R. Nodzu even 

 suggested that the pear-rust infects several species of Chamaecy- 

 paris (in Shimane Kenritsu Noji Shikenjo T. 4 Nendo Gyomu 

 Kotei, [Ann. Rept. Simane Agr. Exp. Stat, for 191 5]. p. 93. 

 Japanese), but his suggestion received little credit by succeeding 

 authors. Yoshino, on the other hand, succeeded in obtaining rust 

 on Cydonia vulgaris, C. japonica and the Japanese pear by infect- 

 ing with a Gymno sporangium found on the small stems of Juni- 

 perus chinensis in the Saga prefecture (in Shok. Zass. 20 232 : 91. 

 May, 1906). He describes this stem-inhabiting telium as being 

 " only swollen or expanded or globular, appearing quite different 

 from the ordinary stem-inhabiting form which expands greatly 

 with moisture into a tongue-like petal." This shows, according to 

 Yoshino, that the telium of G. asiaticum occurs also on the small 

 twigs of juniper in a form quite distinct from that of G. japonicum. 



Gymnosporangium Yamadae Miyabe in Shokubutsugaku Zasshi 

 (Bot. Mag.) Tokyo, 17 192 : 34-35. M. 36, ii, Feb., 1903 (nomen 



