82 A. Barclay — A Descriptive List of the Uredinese [No. 2, 



ably, especially in length. The free end of the spore is rounded, with 

 occasionally a minute knob. The surface of the spore is beset with 

 tubercles (fig. 4, PI. I). 



I have never seen any aecidial form of this species. 



I may add that I collected some of these teleutospores from green 

 leaves in the middle of December, and placing them in water found that 

 they germinated very freely, even so late in the year as that. 



Dr. P. Dietel is inclined to think this is a new species as it differs 

 from Phr. Uubi in having thick stalks and in frequently wanting an 

 apical cone. He thinks it comes near the Australian Phr. Barnardi, 

 Plow et Winter though the latter has lighter coloured spores and forms 

 small punctiform pustules. 



c. PHRAGMIDIOPSIS, Schroter. 

 3. Phragmidium quinqueloculare, nov. sp. 



On Ruhus hijlorus, Ham. 



In April, the stems bear orange yellow pustules, the leaves very 

 rarely. These are probably aecidia. The spores are brilliantly orange 

 red, bluntly angular with slight thickenings at the angles, and densely 

 beset with warts. The fresh spores measure 24 — 20fx. in diameter. 

 The margins of the pustules are surrounded by club-shaped paraphyses. 

 On applying sulphuric acid (with a view to determining the existence 

 of germ pores, in which I was unsuccessful) the spores first turn deep 

 blue and then later pale blue. The spores germinate readily in water 

 throwing out exceedingly long slender unbranched tubes. 



On old dead leaves I found numerous minute, circular, discrete, 

 black teleutosporic pustules, very unlike those of Phr. Euhi (above 

 described) to the naked eye. The teleutospores are mostly brown, but 

 some are orange red, and are very regularly divided into 4 to 5 cells, 

 each well rounded, with a minute, colourless rostrum at the free end. 

 The stalk is slightly bulged, and contains a cavity. They measure 

 80 — 64 X 22 — 20/x. The length of each cell is about 12 — ISfx. I 

 could not determine the number of germ pores to each cell. 



After a winter rest the teleutospores germinate freely. The pro- 

 celia before forming sporidia are filled with orange red matter. The 

 sporidia are spherical and orange red, measuring 12/x in diameter, and 

 are borne on fairly long narrow and pointed sterigmata. 



Remarks. — I do not think this fungus is identical with Phr. Buhi 

 Pers, Phr. violacewn or Phr. Bubi-Idaei, Pers. I have regarded it as a 

 new species provisionally ; but it is difficult to be certain about this. 



