192 NORTH AMERICAN FivORA [Vor^UME 7 



On Juniperaceae : 



Juniperus utahensis (Engelm.) I^emm. (/. californica ulahensis Engelm., Sabina utahen- 

 sis Rydb.), Colorado. 

 Type locality : Glenwood Springs, Colorado, on Sabina ulahensis. 

 Distribution ; In the mountains of western Colorado, Utah, and New Mexico. 

 Illustrations : Bet. Gaz. 49 : pi. 22,/. IS; Bull. N. Y. Bot. Card. 7 : 440,/. 5; pi. 154, f. 45; 

 MycologiaS: 158,/. if^. 



ExsiCCATi : Ellis & Kv. Fungi Columb. 1293. 



5. Gymnosporangium Harknessianum (Ellis & Ev.) Kern, Bull. 



N. Y. Bot. Gard. 7 : 441. 1911. 



Aecidium Harknessianum Farl. Bibl. Index 1 : 5?>, hyponym. 1905. 

 Roestelia Harknessiana EUis & Ev.; Kern, Bull. Torrey Club 34 : 462. 1907. 



0. Pycnia not seen. 



1. Aecia chiefly fructicolous, evenly disposed, usually over the entire surface, cylindrical, 

 0.5-0.8 mm. in diameter, 4-7 mm. long; peridium golden-brown, tough, dehiscent at apex, 

 not becoming lacerate along the sides, remaining tubular ; peridial cells seen in both face 

 and side views, not hygroscopic, remaining straight when wet, polygonal -oblong in face 

 view, 40-65 by 90-112 /i, rhomboidal in side view, 58-74 /^ thick, the outer wall moderately 

 thick, 4-6 /i, smooth, the inner wall thick, 15-20/^, rather coarsely and evenly verrucose with 

 roundish or slightly irregular papillae, the side walls verrucose over the entire surface 

 similar to the inner wall, papillae slightly less crowded toward outer wall ; aeciospores 

 globoid, 22-26 by 26-30 /i; wall light cinnamon-brown, 2-2.5// thick, finely verrucose, the 

 pores several, scattered. 



On Malaceae : 



Amelanchier alnifolia Nutt., California. 



III. Telia unknown. 



Type locality: Klamath River, California, on Amelanchier alnifolia. 

 Distribution : Known only from the type locality. 



Illustrations: Bot. Gaz. 49: pl.22,f. 16 ; Bull. N. Y. Bot. Gard. 7 : 441,/ o. 

 ExsiCCATi : Ellis & Ev. N. Am. Fungi 2714. 



6. Gymnosporangium multiporum Kern, Mycologia 1 : 210. 1909. 



O and I. Pycnia and aecia unknown. 



III. Telia caulicolous, from an annual or perennial mycelium, arising between the 

 scale-like leaves on the green branches, scattered or aggregated and confluent, musciform, 

 0.5-1 mm. across by 0.5-0.8 mm. high, light chestnut-brown ; teliospores 2-celled, ellipsoid, 

 20-24 by 45-51 //, rounded both above and below, considerably constricted at the septum ; 

 wall rather thick, 1.5-2.5/^, light cinnamon-brown, the pores 5-7 in each cell, large, evident, 

 scattered ; pedicel hyaline, cylindrical, uniform in diameter, 7-9 //, very long. 



On Juniperaceae : 



Juniperus monosperma (Engelm.) Sarg. (/. occidentalis monosperma Engelm., Sabina 



monosperma Rjdb.), Colorado. 

 Juniperus utahensis (Engelm.) I^emm. (/. californica utahensis Engelm., Sabitia utahen- 

 sis Rydb.), Colorado. 

 Type locality : Trinidad, Colorado, on Sabina monosperma. 

 Distribution : Southern Colorado. 

 Illustrations : Mycologia 1 : / 2; 3 : 158,/ lb ; Bull. N. Y. Bot. Gard. 7 : 441,/ 7. 



7. Gymnosporangium exiguum Kern, Bull. Torrey 



Club 35 : 508. 1908. 



0. Pycnia epiphyllous and fructicolous, gregarious, rather sparsely arranged in irregu- 

 lar groups about 1-4 mm. across, on discolored hypertrophied areas, prominent, conspicu- 

 ous, honey-yellow soon becoming blackish, globoid or depressed-globoid, 150-165 ^ in 

 diameter by 100-130 /^ high ; ostiolar filaments 50-65 ^u long. 



1. Aecia hypophyllous and fructicolous, rather sparsely arranged in irregular groups, 

 causing considerable hypertrophy of the veins, petioles, or fruit, cylindrical, 2-3 mm. high 

 by 0.3-0.4 mm. in diameter; peridium rupturing at the apex, margin not splitting much, 

 erect ; peridial cells usually seen in face view, not hygroscopic, very broadly lanceolate, 

 29-40 by 70-90 /", oblong in side view, 25-30 u thick, the outer wall rather thin, about 3 /i, very 



