132 ERYTHEA. 
The teleutospores are elliptical or oblong, pronouncedly 
constricted at the septum and covered with small wart-like 
processes somewhat larger than those of the uredospores 
and arranged in such a manner as to suggest a slightly rugose 
appearance. They are borne on pedicels of prodigious 
length, 90 or 110 being not uncommon measurements, and 
occasionally these also bear a few warts. The lower portion 
of the pedicel in recently matured specimens is much swollen 
and when dried often shows lateral folds evidently pointing 
to an apparatus for the dissemination of the spores similar 
to that recently observed by Dietel.* The average of the 
measurements for twenty normally developed spores was 
23x33. A second fact that renders the teleutospores of 
this Puccinia anomalous is the possession of two germ-pores 
for each cell as first observed by Lagerheim. These can be 
detected without the aid of reagents in mature spores but 
become very prominent after treatment with a strong solution 
of caustic potash or sulphuric acid. They are situated at 
opposite points of the spore-wall about midway between the 
septum and either end of the spore and are practically in the 
same plane for both cells. A most interesting series of 
abnormal spore formations can be observed by the examina- 
tion of a considerable number of specimens. Nearly every 
good-sized sorus will present three- and four-celled forms in 
which the cells assume a great variety of positions. 
What may be the scidia of this fungus develop during the 
months of May and June but in such limited numbers that it 
is difficult to secure even a reasonable herbarium specimen. 
At this time characteristic thickened spots of a deep purple 
or even black color appear on the recently developed but 
mature leaves, sometimes attaining a diameter of 2mm. and 
bearing all the way from three to thirty peridia. The latter 
are small, seldom exceeding 16mm. in diameter, tall, pale 
yellow, and with much lacerated edges. Spores are subglo- 
bose, light lemon yellow and vary from 17u to 20u in 
diameter. 
* Ueber Quellungserscheinungen an den Teleutosporenstielen von 
Uredineen. Pringsheim’s Jahrbicher f. w. Botanik, Bd. XXVI, heft I. 
