Arthur: Cultures of Uredineae in 1908 231 



7. Puccinia Schedonnardi K. & S., on S chedonfiardus pani- 

 culatus (Nutt.) Trel., collected at Boulder, Colo., by Mr. E. 

 Bethel, was sown on Thalictrum polygamum and Grindelia squar- 

 rosa, with no infection. Like material was sown in previous 

 seasons on eighteen other species of hosts. 7 



8. Puccinia Ellisiana Thiim., on Andropogon scoparius 

 Michx., collected at Newark, Del., by Mr. H. S. Jackson, was sown 

 on Actaea alba, Ambrosia trifida, Anemone virginiana, Dirca 

 palustris, Hydrophyllum virginicum, Ipomoea pandurata, Isopy- 

 rum bitematum, Iva frutescens, Pentstemon hirsutus, Phacelia 

 bipinnatifida, Psoralea Onobrychis and Verbena urticifolia, with 

 no infection. Similar material from Colorado was sown the 

 previous year on ten other species of hosts. 8 



9. Puccinia vexans Farl., on Atheropogon curtipendulus 

 (Michx.) Fourn. (Bouteloua racemosa Lag.), collected at Stock- 

 ton, Kans., by Mr. E. Bartholomew, was sown on Apocynum 

 cannabinum, Caulophyllum thalictroides, Dalea laxiflora, Del- 

 phinium tricorne, Hydrophyllum virginicum, Napaea dioica, Pole- 

 monium reptans, Symphoricarpos racemosus, Smilax hispida and 

 Thalictrum dioicum, with no infection. This is the first time 

 that an attempt at infection with teliospores has been made, al- 

 though the amphispores were successfully grown on the same 

 grass host last year. 



10. Puccinia poculiformis (Jacq.) Wettst., on Phleum pra- 

 tense L., collected at Sayre, N. Y., by Prof. H. J. Webber, was 

 sown May 1 on Berberis vulgaris. Another collection of the 

 rust from Ithaca, N. Y., sent by Mr. Donald Reddick, was sown 

 May 6 on five plants of Berberis vulgaris, and once more on 

 May 13. As no infection showed after the usual interval, the 

 same material was again sown May 22 on three plants of the bar- 

 berry, and for three successive nights after sowing the inoculated 

 plants were placed in an ice box at a temperature of io° C. in 

 order to insure more favorable conditions for the penetration of 

 the germ tubes into the tissues of„the host. Again on May 28 



* See Bot. Gaz. 35: 12. 1903; Jour. Myc. 8: 52. 1902; 10: 10. 1904; 

 12: 12. 1906; 13: 192. 1907; and 14: 11. 1908. 



7 See Bot. Gaz. 35: 11. 1903; Jour. Myc. 13: 192. 1907; and 14: 11. 

 1908. 



8 See Jour. Myc. 14: 10. 1908. 



