106 



Mycologia 



On Astragalus Sonorae A. Gray: 2660a, July 19, 1920, Cedar Canyon. 

 Host determined by Dr. Rydberg. 



131. Uromyces intricatus Cooke 

 Uromyces Eriogoni Ellis & Hark. 



Two collections were made, each on a different species of Eriogonum, and 

 each new to the species hitherto recorded in this list. Both hosts were too 

 young, however, for specific determination. One collection was made in 

 Maple Canyon, Iron Co., and the other in Zion Canyon, Washington Co. 



132. Uromyces proeminens (DC.) Pass. 



U. Euphorbiae Cooke & Peck. 



On Chamaesyce Greenei (Millsp.) Rydb. : 2646a, July 18, 1920, Cedar City, 

 Iron Co. 2509, July 18, 1919, Price, Carbon Co. 



On Chamaesyce rugulosa (Engelm.) Rydb. : 2708, Aug. 3, 1920, Beaver 

 Canyon, Beaver Co. The host of each of these collections was determined by 

 Dr. Rydberg. 



148. Coleosporium Ribicola (C. & E.) Arth. II 



On Ribes cereum Dough: 2638, July 17, 1920, Maple Canyon, branch of 

 Cedar Canyon, Iron Co. 2705, July 30, 1920, First Left-hand Fork Parowan 

 Canyon, Iron Co. 2716, August 4, 1920, Beaver Canyon, Beaver Co. The 

 host of these collections is considered to be the same as R. inebrians Lindl. 



149. Cronartium filamentosum (Peck) Hedge. & Long I 



Peridermium filamentosum Peck. 



On Pinus ponderosa scopulorum Engelm.: 2628, July 1, 1920, extending 

 southward from the south edge of Bryce Canyon, Garfield Co. This is the 

 first record of the collection of this Peridermium in Utah. The Peridermium 

 at this location is abundant, and is doing considerable damage to the pine 

 trees. 



150. Cronartium pyriforme (Peck) Hedge. & Long I 



Peridermium pyriforme Peck. • 

 Cronartium Comandrae Peck. 



On Pinus ponderosa scopulorum Engelm. Collected by Vernon Christen- 

 sen (a former student in botany at the East High School, Salt Lake City), July 

 15, 1920, headwaters Provo River, Wasatch Co. This is the first collection 

 of this Peridermium in Utah, although the Cronartium has previously been 

 reported from several localities. 



152. Gymnosporangium gracilens (Peck) Kern & Bethel I 



On Philadelphia occidentalis A. Nelson: 2669, July 22, 1920, Zion Canyon, 

 Washington Co. Host determined by Dr. Rydberg. This extends the distri- 

 bution of this Gymnosporangium about two' hundred miles westward. 



