246 BOTANICAL GAZETTE [SEPTEMBER 
rotundifoliae Kleb. from Campanula rotundifolia L.; C. Campanulae f. 
Trachelii Kleb. from Campanula patula L. and C. Trachelium L.; C. Tus- 
silaginis (Pers.) Kleb. from Tussilago Farfara L.; C. Senecionis (Pers.) Fr. 
rom Senecio sylvaticus L. and S. vulgaris L.; and C. Sonchi (Pers.) Lév. from 
Sonchus arvensis. Tropaeolum was infected with all these forms except C. 
Euphrasiae, C. Melampyri, and C. Sonchi. 
RASER” gives a short account of cultures confirming work that has been 
previously reported. The cultures with Uredinopsis mirabilis Magn. deserve 
mention since they show that this form, which in common with a number of 
other species of Uredmopsis has its aecidia on Abies balsamea (L.) Mill., pro- 
duces its uredospores.and teleutospores only on Onoclea sensibilis L. and does 
not infect Osmunda Claytoniana L., O. regalis L., Aspidium Thelyteris (L.) Sw., 
Asplenium Felix-foemina (L.) Bernh., and Phegopteris Dryopteris (L.) Fee. 
These experiments show that Uredinopsis mirabilis is a distinct species. 
In their revision of the North American species of Peridermium on pine, 
ArTHUR and KERN” mention cultures establishing the connection between 
Peridermium cerebrum Peck. (P. fusiforme Arthur and Kern) from Pinus Taeda 
and Cronartium Quercus Arthur on Quercus rubra L. and Q. — L. Fas 
species of Peridermium occurs also on many other species of p 
As a result of cultural experiments with ani  Blasdalosain 
(Dietel and Holway) Kern. (G. Libocedri (P. Henn) Kern.) and Libocedrus decur- 
rens Torr., JACKSON® is able to add Cydonia vulgaris L., Pyrus communis L., PF; 
rivularis Dougl., Amelanchier alnifolia Nutt., and Crataegus Lindl. to the list 
of hosts upon which the aecidial generation of this fungus has been grown. 
The aecidium, which has distinctive spain ages has been found occurring 
also in nature upon a number of other plants. 
In continuation of his work on —. rusts of Southeastern Russia, TRE- 
BoUX*™ reports the following connections. Aecidiospores from Ranunculus 
flammula L. produced uredospores and teleutospores (Uromyces Festucae Syd.) 
repens L., R. chaerophyllos L., R. creticus L., R. illyricus L., R. Kotschyt Boiss. 
and R. sardous Crantz were also infected. The successful infection of Berberis 
vulgaris L. with teleutospores of a Puccinia on Sesleria caerulea Ard. shows 
that this rust, which had been described by FIscHER as P. Sesleriae-caeruleae, \S 
* FRASER, W. P., Notes on Uredinopsis. mirabilis and other rusts. Mycologia 
6:25-28. I914. 
* Artur, J. C., and Kern, F. D., North American species of Peridermium on 
pine. oe 6: aaa 
*% Jackson, H. S., A new pomaceous rust of economic importance, Spee nal 
gium Blasdaleonacn. Phyoouholay 5. 261-270. pis. 2. 
4 TREBOUX, O. 4 CSE ED mit parasitischen Pilzen IV. Ann. Mycol. 
12:480-483. I914. 
