24 Journal of Mycology [Vol. 14 



Similar material obtained at Wolcott, about one hundred 

 miles west of Boulder, was sown on Crataegus cordata (Mill.) 

 Ait. May 5. on a tree out of doors, giving rise to pycnia May 17, 

 and aecia July i. Another sowing on Sorbus Americana May 15, 

 gave a large number of pycnia May 24, and aecia well formed 

 July 25. A sowing on Amclanchier erecta gave no infection. 



All the foregoing sowings were on the leaves. The ample 

 success attained admits of no question that the aecia, recently 

 described under the name Roestelia Betheli Kern, do in fact belong 

 to the large gall form of cedar rust, as suggested by ^Ir. E. 

 BetheP"* from field observations. 



8. Gymnosporangium inconspicuum Kern. — Telios- 

 poric material on Juniperns Utahc-nsis (Engelm.) Lemmon, 

 obtained from the type locality at Glenwood Springs. Colo., by 

 Mr. F. D. Kern and the writer, was sown on the leaves of Cra- 

 taegus sp., Amelanchier Canadensis, and Pyrus communis, with 

 no infection. It was afterward sown on fruit of Amelanchier 

 erecta May 10, which gave rise to abundance of pycnia May 24, 

 and aecia June 15, the aecia being mature by June 19. The 

 affected areas of the fruit became somewhat swollen, and of a 

 yellowish white color, making them conspicuous. The aecia 

 prove to be identical with Roestelia Harkncssianoides Kern, and 

 thus confirm the inference drawn from fiield observations.^*. It 

 is an interesting fact that while the telia of this species of rust 

 are very evanescent, the aecia persist and may be found on mum- 

 mified fruits the year following infection, so that it is likely to 

 become common in herbaria. 



SUMMARY. 



The following is a complete list of successful cultures made 

 during the season of 907. It is divided into two series : species 

 previously reported by the writer or other investigators, and 

 species now reported for the first time. 



A Species previously reported. 



1. PucciNiA Albiperidia Arth. — Teliospores on Carex 

 crinita Lam., sown on Rihes Cynosbati L. 



2. PucciNiA Caricis-Asteris Arth. — Teliospores on Ca- 

 rex rosea Schk.. sown on Aster cordifolia L., and on Carex sp., 

 sown on Aster paniculatns Lam. 



3. Puccinia Caricis (Schum.) Reb. — Teliospores on Ca- 

 rex stipata Muhl., and on C. riparia Curt., sown on Urtica gra- 

 cilis Ait. 



Bull. Torrey Club 34 -•460. 1907. 

 Bull. Torrey Club J^:463. 1907. 



