25614 I Mycologia 



19. Gymnosporangium Betheli Kern. Teliospores on Junip- 

 erus scopulorum Sarg., sown on Crataegus sp. and Sorbus ameri- 

 cana Marsh. 



20. Gymnosporangium Botryapites (Schw.) Kern. Telio- 

 spores on Chamaecyparis thyoides (L.) B.S.P., sown on. Amelan- 

 chier intermedia Spach. 



21. Gymnosporangium cornutum (Pers.) Arth. Teliospores 

 on Juniper us Sibirica Burgsd., sown on Sorbus americana Marsh. 



22. Gymnosporangium Davisii Kern. Teliospores on Junip- 

 eras Sibirica Burgsd., sown on Aronia nigra (Willd.) Britt. 



23. Melampsora Medusae Thiim. Teliospores on Populus 

 tremuloides Michx., sown on Larix laricina (DuR.) Koch. 



B. Species Reported A r ozv for the First Time 



1. Puccinia Absinthii DC. Teliospores on Artemisia dra- 

 cunculoides Pursh, sown on same host. 



2. Puccinia macrospora (Peck) Arth. Teliospores on Carex 

 comosa Boott, sown on S mil ax Jiispida Muhl. 



3. Puccinia patruelis Arth. Teliospores on Carex pratensis 

 Drej., sown on Agoscris glauca (Pursh) Greene. 



4. Puccinia cinerea Arth. Teliospores on Puccinellia air- 

 oides (Nutt.) Wats. & Coult., sown on Oxygraphis Cymbalaria 

 (Pursh) Prantl. 



5. Puccinia Koeleriae Arth. Teliospores on Koeleria cris- 

 tata (L.) Pers., sown on Mahonia Aquifolium (Pursh) Nutt. 



6. Puccinia alternans Arth. Teliospores on Bromus Porteri 

 (Coult.) Nash., sown on Thalictrum dioicum L. 



7. Puccinia obliterata Arth. Teliospores on Agropyron bi- 

 florum R. & S., sown on Aquilegia canadensis L. 



8. Puccinia Muhlenbergiae Arth. & Holw. Teliospores on 

 Muhlenbergia glomerata Trin., sown on Callirrhoe involucrata 

 (T. & G.) A. Gray. 



9. Gymnosporangium Libocedri (P. Henn.) Kern. Telio- 

 spores on Libocedrus decurrens Torr., sown on Crataegus Pringlei 

 Sarg. 



10. Gymnosporangium exterum Arth. & Kern. Teliospores 

 on Juniperus virginiana L., sown on Porteranthus stipulatus 

 (Muhl.) Britt. 



Purdue University, 

 Lafayette, Ind. 



