238 BOTANICAL GAZETTE [SEPTEMBER 
Formerly FiscHEr™ had shown that the aecidiospores of the aecidium on 
uphorbia Gerardiana collected in a district of Switzerland infected Saponaria 
ocymoides, but st sagas os of the pink family. Later, in a preliminary 
paper,'s he d linfection of Tunica prolifera by aecidiospores 
from the same Euphorbia collected in another region (near Heidelberg). The 
existence of specialized forms within the species Uromyces caryophyllinus 
suggested by this experiment was confirmed by the experiments reported in the 
present paper. In this series of cultures the aecidiospores from Euphorbia 
Gerardiana collected near Heidelberg were sown on plants representing 10 
species of the Caryophyllaceae, but only Tunica prolifera was infected. In 
single instances one uredo pustule was observed on Saponaria ocymoides and 
one on Tunica Saxifraga. A repetition of sowings of aecidiospores, collected 
in the region from which the material first used to infect Saponaria ocymoides 
was obtained, resulted in a doubtful infection of Saponaria, but a fairly abun- 
dant infection of Tunica prolifera. It is probable, therefore, that this material 
consisted mostly of the Tunica-form. These experiments show that Uromyces 
caryophyllinus consists of at least two biologic forms, one Tunica prolifera, 
rarely infecting Saponaria —. one on S. ocymoides, whose relations 
to Tunica prolifera are not fully kno 
NEIDER™ reports the iesveiiies results of cultures of rusts infecting 
liliaceous plants. Uromyces Scillarum (Grev.) Winter, which occurs on various 
species of Muscari and Scilla, infected only Muscari racemosum, the species 
from which the material had been obtained. The teleutospores were found 
to germinate either immediately or after a period of dormancy. Puccinia 
Schroeteri Passerini from Narcissus radiiflorus infected also N. pseudonarcissus. 
Puccinia Allii (DC.) Rudolphi is reported by Sypow as occurring on 27 species 
of Allium. Teleutospores from Allium sphaerocephalum produced uredinia 
on that species and also on A. sativum, A. hymenorrhizum, A. oleraceum, and 
A. fistulosum. In one case pycnidia and aecidia appeared on A. sativum. 
Uredospores of Puccinia Porri (Schw.) Winter from Allium Schoenoprasum 
infected A. Schoenoprasum, and to a less degree A. ampeloprasum, A. sphaero- 
cephalum, A. Strictum, A. montanum, A. fistulosum, A. oleraceum, and A. hyme- 
norrhizum. In one case, a sowing of teleutospores from A. Schoenoprasum on 
plants of that species resulted in the production of aecidia. This fact is of 
interest, since TRANZCHELL,” as a result of experiments with the same form, 
found that no aecidia were formed, whence he concluded that this was a true 
hemi-Puccinia. The existence of hemi-forms i is therefore still in doubt. 



* Rev. Bor. Gaz. 53:79. 1912. 
*s Fiscuer, Ep., Uber die Specializati Solel 
Winter. Mycol. Centralbl, a ee work: “28, es aaa, el aauaaata 
" SCHNEIDER, W. fg Biologie der ice bewohnenden Uredineen. Centralbl. 
Bakt. 322452, 453. 19 
*7 Rev. Bor. Gaz. rae 1912, 

