256 



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 Chamaecy parts thyoides (L.) B.S.P., sown on Amelan- 

 chier intermedia Spach. 



21. Gymnosporangium cornutum (Pers.) Arth. — Teliospores 

 on Juniperus Sibirica Burgsd., sown on Sorbus americana Marsh. 



22. Gymnosporangium Davisii Kern. — Teliospores on Junip- 

 erus 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 Now 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 Car ex 

 comosa Boott, sown on Smilax hispida Muhl. 



3. Puccinia patruelis Arth. — Teliospores on Carex pratensis 

 Drej., sown on Agoseris 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 Aquijolium (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. 



