4H PLANT DISEASES 



sheaths, more scattered on the inner surface of the glumes; 

 each sorus encircled with curved, brownish paraphyses; 

 teleuto-spores shortly stalked, mostly elongated, club- 

 shaped, unsymmetrical, apex flattened or with 1-2 blunt 

 prominences, 30-40 p. long, basal cell 9-12 p. wide, terminal 

 cell 16-24 p. wide ; promycelium contents yellow. 



Puccinia simplex, Eriksson and Henn., Getreidr., p. 238, 

 tab. xi., figs. 124-128. 



I. Unknown (absent ?). 



n. Sori very minute, up to 0-5 mm. long, sparingly 

 scattered on the upper side of the leaves, citron-yellow; 

 uredospores globose or shortly elliptical, spinulose, yellow, 

 19-22 p. diam., or 22-27 x I 5" I 9 /* 



in. Sori very minute, blackish, scattered on the leaves, 

 somewhat longer on the leaf-sheath, each sorus with brown 

 paraphyses ; teleutospores stipitate, mostly i-celled, un- 

 symmetrical, 24-30 x 16-18 /A, rarely 2-celled, clavate, apex 

 blunt or narrowed, 40-48 /M long, basal cell 16-18 /x broad, 

 terminal cell 19-24 /x broad. 



Puccinia phlei-pratensis, Eriksson and Henn., Gefreidr., 

 p. 130, tab. v., f. 55, 56. 



I. Unknown (absent ?). 



n. Sori often crowded, yellowish brown, 1-2 mm. long, 

 on leaf-sheaths and culm ; uredospores oblong, pear-shaped, 

 spinulose, dirty yellow, 18-27 x 15-19 p*. 



in. Sori blackish, on leaf-sheath and culm, 2-5 mm. long ; 

 teleutospores fusiform or club-shaped, constricted at the 

 septum, chestnut-brown, apex rounded or narrowed, wall 

 much thickened, 38-52 X 14-16 p.. 



** Brachypuccinia, Schrot. Spermogonia, uredospores, 



