236 BOTANICAL GAZETTE [SEPTEMBER 
folia and Polygonatum multiflorum, but sparsely on Convallaria majalis L. 
and Majanthemum bifolium Schmidt. Teleutospores of the same species from 
another region infected Convallaria freely, but produced only yellow spots 
on the other three liliaceous plants. Aecidiospores of Puccinia Symphyti- 
Bromorum F. Miiller from Symphytum officinale L. infected Bromus inermis 
Leyss., B. erectus Huds., B. rigidus Roth, and B. mollis L., thus confirming the 
relation between this aecidium and the brome rusts. Out of 1 5 species of 
plants on which Puccinia persistans Plowright from Agropyrum repens Beauv. 
was sown, only Thalictrum flavum L. was infected. 
ith the crown rusts of grasses the following cultures were made. (1) 
Aecidiospores obtained by sowing Puccinia coronata {. agrostidis Erikss. from 
Agrostis vulgaris With. on Rhamnus Frangula (Frangula Alnus Mill.) infected 
only Agrostis alba L. of the 8 grasses used. Since plants of Calamagrostis were 
not infected, this result is further evidence for the distinctness of the forms 
of crown rusts on A grostis and on Calamagrostis. (2) Aecidiospores obtained 
by sowing Puccinia coronifera {. Lolii Erikss. on Rhamnus cathartica L. infected 
Lolium perenne L., L. temulentum L., Festuca elatior L., and Holcus lanatus L. 
This confirms the results of other experiments that the crown rusts known as 
the forms Lolii and Festucae are not well differentiated. (3) Aecidiospores 
obtained by sowing Puccinia coronifera f. Holci Kleb. from Holcus lanatus L. 
on Rhamnus cathartica infected both Holcus lanatus and Lolium perenne, 
showing that the forms Holci and Lolii are likewise not sharply differentiated. 
(4) A crown rust on Arrhenatherum elatius Mert. et Koch was found to produce 
aecidia on Rhamnus cathartica, and thereby proved to belong to Puccimia 
coronifera Kleb. Since the aecidiospores infected Arrhenatherum elatius but 
none of the other grasses subject to the attacks of crown rusts, this is considered 
by the author as a special form, Arrhenatheri. 
Cultures with Phragmidium Rubi (Pers.) Winter, P. violaceum (Schultz) 
Winter, and Kuehneola albida (Kiihn) Magnus on some 26 species of Rubus 
owed that no specialized races exist within the species in these rusts; the 
species, however, show differences in their behavior toward different species 
of Rubus agmidium Rubi infected Rubus caesius L. and the species of the 
but only rarely the species of other groups. P. violaceum 
OLLI group. Kuehneola infected nearly all the species. 
of Melampsora vernalis Mieszl. from Saxifraga granu- 
-—o on es firmed the experiments of PLowricut and of DIETEL 
according to which this rust is autoecious. A number of cultures did not give 
Positive results. So 
: wings of uredospores of Uromyces Alchemillae (Pers.) 
Winter on Alchemilla 
Sowing of aecidiospores 

of this fungus, whose myceli 
has not been suffi um is perennial in the rootstocks of Alchemilla, 
ciently cleared up. Puccinia Tanaceti DC. from Tanacetum 

