﻿1903] CULTURES OF UREDINEAE II 



rarily grown in pots in the greenhouse. In no case was success 



attained where definite clues derived from field observations 

 were lacking. 



Fourteen species were ■ tried this year by the guessing 

 method, no clues being known, and the following is a record of 

 the failures, together with one instance, that of the Panicularia 

 rust, where a seeming clue also failed. Teleutospores were 

 employed in every case. 



1. Melampsora from Popiilns dcltoidcs Marsh, was sown on 



1 



Lanx eitropaea^ Abies balsamea, Eiioiiymus obovatus, Stylophonoii 



diphylhim, HeliantJms striunostis, and H, 

 infection. 



2. Melampsora on Salix discolor Muhl. was sown on Larix 

 europaea, Abies balsamea, Picea canadoisis, Euo?iymus obovatus^ 

 Rtbes aziretim, R. gracilis, and Helia?ithus grosse-serrattis, with no 

 infection. 



1 



3. Uromyces Junci TuL from Jimcus tciiiiis Willd. was sown 

 on Iris versicolor, with no infection. 



4. Uromyces Sporoboli E. & E. from Sporobohis loiigifoliiis 

 (Torr.) Wood was sown on Ceanothiis america?ms and Verbena 

 stricta, with no infection. 



5. Uromyces Halstedii De T. from Homalocenchriis vir- 

 gi?nc2is (Willd.) Britt. was sown on Se?iecio obovatus and Bidejis 

 frondosa, with no infection. 



6. PucciNiA Eleocharidis Arth. from Eleochans pahistris 

 (L.) R. & S. was sown on Iris versicolor, with no infection. 



7. PucciNiA Schedonnardi K, & S. from Schedonnardus pan- 

 tcidatns (Nutt.) Trel. was sowm on Lepidium apctaliim, Ceanothus 

 amencaniis, Oxalis cymosa, Apocynum cannabiniim, Cassia Chamae- 

 crista, Symphoricarpos racemosns, Xa?ithiu?n canadoise, Kuhnistera 

 purpurea, and Lacinaria scariosa, with no infection. 



8. PucciNiA Muhlenbergiae a. & H. from Mtihlenbergia race- 

 wosa (Mx.) B. S. P. was sown on Napaea dioica, hnpatie7is aurea, 

 Oxahs cymosa, Anemone canade?isis and A. virgi?da7ia, Hydrophyl- 

 him appendicnlatum, Phlox divaricata, Physalodes Physalodes, Apo- 

 cynum cannabintim, and HeliantJms zrosse-serratus, with no infec- 



tion 



