ON THE UREDINEAE PARASITIC ON THE JAPANESE GRAMINEAE. I 85. 



Uromyccs Alopccuri Seym.(i), I find the following points of difference : — 



1. The uredosori are amphigenous or hypophyllous in our species and 

 not epiphyllous as in the American species. 



2. The measurement of our uredospores is a little larger (27 or 28 /^ 

 against 24/^). 



3. Though the teleutosori are written as epiphyllous, they are mostly 

 hypophyllous in our species and also most commonly formed at the basal' 

 part of the sheath. 



Although the essential characters of the uredospores and teleutospores 

 are practically the same, the above mentioned differences in character being 

 constant, I tliink it better to treat our plant as a variety of the American 

 Uromyccs Alopccuri. 



4. Uromyces Setariae italicae (Diet.) Yoshino., in Bot. Mag. Tokyo, 20, 

 1906. (247).— (PI. X. Fig. 4.) 



Syn. : Urcdo Setariae italicae Diet., in Engl., Bot. Jahrb., 32, 1903, 

 (632) ; Sacc, SylL, 17, 1905, (4S7) ; Sydow & Butler, in Ann. Mycol., 4, 

 1906, (444). 



Uredosori = Urcdo Setariae italicae Diet. 



Teleutosori, mostly hypophyllous or on the sheath ; minute, oblong or 

 roundish, scattered or gregarious, commonly not confluent, long covered by 

 epidermis, somewhat pulvinate, inconspicuous, greyish-black. Teleutospores, 

 spherical, obovate or oblong, mostly angular, apex not or slightly thickened, 

 and rounded or truncate, base rounded or attenuated, brownish yellow or 

 yellowish, 20 — 30 x 16 — 24,«; episporc thick (2—3/;); pedicels persistent, 

 hyaline or subhyaline, as long as the spores. 



Hab. On Setaria italica Beauv. var. germanica Trin. 



Honsliü. — Prov. Musashi: Tokyo (II. Oct. 3, 1901. S. KusANo ; II. Sept. 26, 1896. S. IIORi). 

 — Prov. Rikuchü: Shinjö (II. & III. Sept. 26, 1897. Y. Takahashi). 



Kiusiu.— Prov. Higo: Kumamoto (II. May 1902. T. Kawakami ; II. & III. Oct. 19, 1906. 

 K. Yoshino). 



On Setaria viridis Beauv. 



Honshu. — Prov. Musashi : Tokyo (II. Sept. 29, 1896. S. HoRl ; II. Oct. 3, 1501. S. KusANO).. 

 — Prov. Izu: Shüzenji (II. Nov. i, 1900. N. Nambu). 

 Eistrib. J^pan and India. 



