284 PUCCINIA 
Uredospores. Sori on the leaves or most often on the 
culms, on the latter and on the sheaths confluent in long lines 
(as much as 8 cm. long) and.splitting the epidermis, on the 
leaves more often scattered, minute and oblong, 1—2 mm. long, 
pulverulent, dark yellowish-brown; spores ellipsoid to oblong 
or even somewhat pear-shaped, aculeate, dirty-yellow, 18—30 x 
15—20 pu. 
Teleutospores. Sori similar, but.chiefly on the culms, black- 
brown; spores clavate, rounded or conically attenuate above, 
thickened (up to 8), constricted, attenuated below, smooth, 
brown, 38—52 x 1420 w; pedicels brownish, persistent, rather 
thick, as much as 60 uw long. 
On leaves and culms of Phleum pratense (and P. nodosum) ; 
also on Festuca elatior. 
This was separated by the authors from P. gramznis on the ground 
that it will not infect Berberis; Eriksson has shown that it will feebly 
infect Phleum Micheli, Secule cereale, and Avena sativa, but not Triticum 
vulgare, Hordeum vulgare or Poa pratensis. It chiefly occurs in the uredo- 
stage, and winters thereby or by its mycelium; in many localities the 
teleutospores are not formed at all. This may be one of the cases where 
the ecidium has been dropped completely from the life-cycle. I have not 
seen a British specimen, but it is extremely likely to occur here. 
DisTRiBuTION: Germany, Austria, Denmark, Sweden. \\ it 
136. Puccinia Arrhenatheri Erikss. 
Heidium graveolens Shuttl. apud Cooke, in Bull. Soc. Bot. Fr. 1877, 
xxiv. 315, Saec. Syll. vil. 778. 
Puceinia perplexans Plowr. f. Arrhenathert Kleb. in Abhandl. Natur. 
Ver. Bremen, 1892, p. 366. 
P. Arrhenathert Erikss. in Cohn’s Beitrage zur Biologie d. PAlanz. 1898, 
vi. 1. Sydow, Monogr, i. 729. Fischer, Ured. Schweiz, p. 345. 
[Spermogones. Very numerous, minute, covering a great 
part of the leaf or the whole leaf uniformly. 
Beidiospores. .Kcidia hypophyllous, sometimes even on 
the flowers, deforming the affected branches, generally distri- 
buted densely and evenly over the whole leaf, between cylin- 
drical and cup-shaped, with a torn whitish revolute margin: 
