MILDEWS, RUSTS AND SMUTS 
209 
In the specimens that I have examined in Fuckel, Fung. 
Rhen., 370 ; Syd. Ured., 168 ; and Oud. Fung. Neerl., 133, 
the teleutospores are practically smooth, traces of warts 
being only visible under special treatment and manipula¬ 
tion. P. calthae is distinguished by the completely smooth 
teleutospores having a conical wart at the tip. 
Puccinia simplex, Eriksson and Hemmings. 
Uredospores. On both surfaces of the leaves, minute, 
scattered, dot-like, yellow; spores globose or elliptical, 
spinulose, yellow, 19^—22 p, or 22—27 X 15—20 p. 
Teleutospores. Sori on both sides of the leaves, also often 
on the culm, minute, scattered and dot-like on the leaves, 
larger on the culm, generally crowded into each other, 
oblong, covered by the epidermis, black ; spores oblong- 
clavate or clavate, tip rounded or obliquely conically nar¬ 
rowed, thickened up to 4—8 p, smooth, brown, ^o-—-54 
X 15—24 p, pedicel tinged brown, short. 
Mesospores. Generally very numerous, unsymmetrical, 
oblong or somewhat club-shaped, variable, tip thickened up 
to 4-—10 p, 25—^45 X 16—24 p ; paraphyses brown, tip 
thickened. 
Syn. Puccinia straminis, Fuckel, var. simplex, Koern. 
Puccinia rubigo-vera, var. simplex, Schroeter. 
Puccinia anomala, Rost. 
Uromyces hordei, Niels. 
Uredo simplex, Eriksson and Henn. 
On barley— Hordeum distichum, and other species of 
Hordeum. Found in abundance in a barley field at 
Lynsted. Europe generally and Asia Minor. 
Characterised by the presence of numerous mesospores. 
p 
