ON GRAMINE.*: 



275 



elliptical or linear, reddish-brown, pulverulent, without para- 

 physes; spores subglobose or 

 ovate, echinulate, brownish, 25 — 

 35 x 20—25^. 



Teleutospores. Sori similar, 

 but larger (2 — 4 mm.), compact, 

 pulvinate, black: spores oblong, 

 rounded at both ends, with a cap- 

 like thickening (5 — 10 //,) above, 

 plainly constricted, brown, 50 — 

 60 x 20 — 23 fx; pedicels brownish, 

 thick, persistent, 75 — 100 p long. 



^Ecidia on Rumex Acetosa, 

 May and June; uredo- and teleu- 

 tospores on Phragmites communis, 

 from July. Rare. (Fig. 209.) 



The results of Plowright's cultures 



have been confirmed by Klebahn, but 

 at any rate this species is very closely 

 allied to the previous one, and should 

 rather be considered as merely a 

 biological race of it. 



Distribution : Holland, Germany. 



129. Puccinia Agrostidis Plowr. 



JEcidium Aquilegiae Pers. ; Plowr. Ured. p. 263. 



jE. Ranunculacearum var. Aquilegiae DC. ; Cooke, Handb. p. 539. 



P. Agrostidis Plowr. Card. Chronicle, 1890, ii. 139 ; Grevillea, xxi. 

 110. Sacc. Syll. xi. 202. Sydow, Monogr. i. 717. McAlpine, 

 Busts of Australia, p. 114, f. 27(0- Fischer, Ured. Schweiz, 

 p. 353, f. 257. 



Spermogones. Honey-coloured, on round spots. 



sEcidiospores. iEcidia on rather large roundish yellow spots 

 which are often thickened and margined with brown, crowded, 

 hypophyllous, shortly cylindrical, with a torn white margin; 

 spores faintly verruculose, orange, 16 — 30 x 14 — 20 /x. 



Uredospores. Sori amphigenous, on yellow spots, elongated 

 or linear, about 1 mm. long, bright-orange ; spores globose to 



IS— 2 



Fig. 209. P. Trailii. Teleuto- 

 spores, and sori on leaf of Phrag- 

 mites. 



