(445) 



enlargements of the smaller woody branches, occasionally appear- 

 ing on the leaves also, scattered, soli- 

 tary or often aggregated and confluent, 

 irregular, varying greatly in size, 1-3 

 mm. across, applanate and low or some- 

 what pulvinate, light chocolate-brown, 

 teliospores 2-celled, broadly ellipsoi 

 16-22X31-42/*, usually narrowed be- 

 low, rounded or attenuated at the 

 r the sep- 



D P la< 



wing 



presence of hyaline papillae < 

 germ-pores, not or only rarely con- 

 stricted at the septum, wall light cinnamon-brown, thin, about 

 in, papillae 2-5/j; pores 1-2 in each cell, apical or near the septum. 



For the aecia: Sorbus americana Marsh., S. Aucuparia L., 

 S. hybrida L. (= S. Aria X aucuparia), S. scopulina 

 Greene (S. sambucifolia A. Gray not C. &. S.). 

 For the telia: Juniperus communis L., /. sibirica Burgsd. 

 (/. nana Willd.). 

 Type locality: Norway, on Sorbus aucuparia. 

 Distribution: Greenland south to New York and Wisconsin, 

 and in the mountains of Wyoming and Colorado; and in Europe. 

 Illustrations: Pers. Obs. Myc. 2: pi. 4, f. 2, 3; Overs. Danske 

 Vid. Selsk. Forh. 1866: pi. 3-4; E. & P. Nat. Pflanzenfam. I 1 **: 

 /. 33, A, B; Grev. Crypt. Fl. 3: pi. 180; Bot. Gaz. 49: pi. 22, f. 14. 

 Exsiccati: Ellis, N. Am. Fungi 1089; Seym. & Earle, Econ. 

 Fungi 248X; Thum. Myc. Univ. 1325; T-hiim. Fungi Austr. 

 954; Sydow, Ured. 242, 840; West. & Wall, Herb. Crypt. 742; 

 Sacc. Myc. Ven. 400; Sacc. Myc. Ital. 45; Linhart, Fungi Hung. 

 39, 238; Sydow. Myc. Mar. 140, 428; Krieger, Fungi Sax. 319; 

 Briosi & Cavara, Funghi Paras. 62; Roum. Fungi Gall. 52; Cooke, 

 Fungi Brit. 1; Rab. Fungi Eur. 2196; Schm. & Kunze, Deutsch. 

 Schwamne no. 



11. Gymnosporangium Torminali-juniperinum Ed. Fisch. 

 Zeits. f. Bot. 2: 759. 1910 



Aecia hypophyllous, in small groups or sometimes solitary, on 

 hypertrophied discolored spots, cylindric, 0.3-0.4 mm. in diam- 

 eter by 2-3 mm. or more high; peridium finally dehiscent at apex, 

 becoming more or less split along the sides; peridial cells usually 

 seen in side view, rhomboid, 23-29 X 65— 90JH, outer wall 2-3/i 



