KASAI— ON THE JAPANESE SPECIES (^F PHKAGMIDIUM. 33 



Prov. I>hikari, Mak-nianai « III. M. KL\SAI, Nov. 1, iWfy- 



On Hosa laevigata Mich. 



Pr.iv. T..>;i, Yoshiwaragoe JI. T. YOSHIXAirA. Jan. 190S 



ReMAKKS : — Thi.-; is also one of the endemic species of Phragmidium of our 

 ct.>untrv, Thi.^ species wa.s erroneously identified to Fh. subcotiieium (Schrank.) 

 Wint. bv DlETEL in 15'nl (Engl. lot. Jahrb., Rl. 28, p. 2-!5 . The «ime spe- 

 cimen collected bv S. IvUSaNO at Takao, on which DIETEL made his determination 

 in 1901, is also foimd in our College Herbarium. An examination of the specimen 

 shows us that it is nothing but Ph. JRosae-midfißorae Diet. In Hedwigia, Bd. 44, 

 p. 132, our present species wais first descriljed bv DiETEL. He mentions there only 

 the name of the collector, S. IvUS-VNO, without giving the localitv and the date 

 of the collection. He might have used, as it seems to he the case, the same 

 specimen of 1901 from S. KrS-\NO over again. The l^est criterion, bv which this 

 species is distinguished from Ph. subcoiiieium (Schrank. Wint. is its smooth, beau- 

 tiful, flavated pedicel whose upper half is of a deep yelioNvish color. The teleuto- 

 spores make their api>earance v(ry early in summer. I got many specimens of 

 them by the end of June last year in the \'icinity of Sapporo. This is the only 

 species on ßosa imilfißora in Hokkaido, as Ph. Jajionicum Diet, has not yet been 

 found here on the same host so far. On Bo-m laevigata Mich the teleutix-^pores are 

 not yet foimd ^Ir T YOSHINAGA informell mo, in his letter accompanied to the 

 specimen, that the uredostage on the host above named was identified to Ph. liosae- 

 muUiflome Diet, by DiETEL. 



6. Fhi'agmidium Rosae-rugoss. u sp. 



Caeomaia forming a large dense cushion on stems, petioles, and fruits, and on 

 the lower surface of leaves oflen causing a remarkable deformation, bright orange ; 

 paraphyses club-shaped, contents yellow, grauular ; ca?omasi)ores polygonal or globose, 

 epispore minutely warty, hyaline, contents granular, orange yellow ; '2'2-24 mmm. 

 in diam., germ-pores 3-4. 



Uredosori hyp<^phyllous, yelluw, minute, orbicular, s<-atrered or crowdeil ; ]nira- 

 physes linear cylindrical, generally slightly curved ; uredosiwres glol>;i.-?e, ovate or 

 polygonal, diameter 115-22 mmm., contents yelluw. epi.sp^re finely echinulate, 2 mmm. 

 thick, colorless ; germ-pores 4-5. 



Teleidosori hvpophyllous, scattererl or l(X>sely aggregated, brown to chestnut- 

 brown, not black, readily detachable ; teleutospores cylindrical, rounded at both ends, 

 brownish-yellow : papilla obtuse, very >hort ^4-H mnini ), yellow ; 7-11 celled f.-^jme- 



