Part 3, 1912] AECIDIACEAK 181 



Caeoma luminalum J^in'k, in WiUd St) PI 62-61 1R?s 



P«S fZ'usZitT i^f^- \°" i^-P- n/ Y. state Mus. 23 : 57. 1872. 

 JTuccinia tripustulata Peck, Ann. Rep. N. Y State Mus 24 • 91 1«72 



fZTIr'^"^' ^^"^j"' ^^^^- "1- I^ab. Nat. Hist 2 : 220 18^5 



P«.««za z«^_r.4a/z. Tranz. Hedwif fa §2 ^59 1?93 ' 

 Dtcaeoma trtpusiulatum Kuntze, Rev. Gen. 33 ■ 467. "l898. 



0. Pycnia chiefly epiphyllous, scattered, noticeable, honey-yellow becoming brownish, 



columnar, projecting rather far above the surface of the epidermis, 87-100 // high by 50-80 ii 

 m diameter. r ^ j r 



1. Aecia chiefly hypophyllous, from a perennial mycelium, usually thickly crowded, 

 occupying part or all of the under surface of the leaflets, irregular, 0.5-1.5 mm. across, 

 often confluent and tortuous, applanate, soon naked, bright orange-yellow, ruptured epi- 

 dermis conspicuous; aeciospores subgloboid or broadly ellipsoid, 16-24 by 19-30^; wall 

 colorless, rather thin, about 1.5//, evenly and finely verrucose, the pores obscure, 6-10, 

 scattered. > f , , 



III. Telia hypophyllous, gregarious, on small yellowish spots, roundish, small, 0.1-0.2 

 mm. in diameter, sometimes confluent, rather early naked, dark-brown, ruptured epider- 

 mis not conspicuous; teliospores variable in shape, ellipsoid or ovate, 18-27 by 32-45 //, 

 somewhat narrowed above, usually somewhat distorted in the lower cell laterally or near 

 the pedicel owing to a protrusion of the wall at the pore, slightly or not constricted at the 

 Septum, wall chestnut-brown with a small hyaline papilla over each pore, moderately thin, 

 1.5-2//, smooth except near the pores which are often surrounded by a few hyaline beads, 

 the pores one in a cell, apical in the upper, near the pedicel or lateral in the lower ; pedicel 

 short, deciduous. 



On Rosaceae ; 



Rubus allegheniensis Porter {R. nigrobaccus Bailey, R. villosus Auct. not Ait.), Delaware, 

 Illinois, Indiana, Iowa, Kansas. Kentucky, Maine, Maryland, Massachusetts, Missouri, 

 New York, North Carolina, Ohio, South Dakota, Vermont, Virginia, Wisconsin. 



Rubus arciicus Iv., Yukon. 



Rubus canadensis 1,. (not A. Gray), Maine, Michigan, New York, West Virginia, Wisconsin. 

 Rubus cuneifolius Pursh, Florida. 



Rubus occidenialis L., Connecticut, Illinois, Massachusetts, Nebraska, New York, North 



Carolina, Ohio, Vermont, West Virginia. 

 Rubus Randii (Bailey) Rydb., Nova Scotia. 

 Rubus stellaius Smith, Alaska. 

 Rubus strigosus Michx. {R, idaeus canadensis Richardson), Indiana, Massachusetts, New 



York, Vermont ; New Brunswick, Ontario. 

 Rubus triflorus Richardson, {R. americanus Britton), New Hampshire, Wisconsin. 

 Rubus trivialis Michx., Florida, South Carolina, Texas. 

 Rubus vermonianus Blanch., Vermont. 

 Rubus villosus Ait. (i?. canadensis A. Gray, not I^., R. procumbens Muhl.), Connecticut, 



Delaware, District of Columbia, Indiana, New Hampshire, New Jersey, Pennsylvania, 



West Virginia. 



Rubus vitifolius Cham. & Schlecht., California. 



Type locax-ity : Kamchatka, on Rubus arciicus. 



Distribution : Throughout the United States and Canada east of the Rocky mountains, and 

 on the Pacific coast from northern California to southwestern Alaska and northward ; also in 

 Burope and northern Asia. 



iLLirSTRATiON : Beitr. Krypt. Schweiz V- : /. 280. 



BxsicCATi: Kellerm. & Swingle, Kan. Fungi J7; Kellerm. Ohio Fungi 19,20, 67 ; Ellis, N. 

 Am. Fungi 277, 278 ; KHis & Ev. Fungi Columb. 57, 1622 ; Earth. Fungi Columb. 2568, 2937, 3238, 

 3239,3327 ; Barth. N. Am. Ured. 106; Rav. Fungi Kv^.^76 ; Rav. Fungi Car. 1 : 91; Rab.-Wint. 

 Fungi Eur. 3225a, b; Roum. Fungi Q^\\.874; Shear, N. Y. Fungi 67, 133; Thiim. Myc. Univ. 

 446 ; Sydow, Ured. 1389, 1785 ; Seym. & Earle, Econ. Fungi ^(5, 27, 28. 



2. Gymnoconia Rosae-gymnocarpae (Dietel) Arthur. 



Caeoma Rosae-gymnocarpae Dietel, Hedwigia 44 : 334. 1905. 



0. Pycnia chiefly epiphyllous, scattered among the aecia, punctiform, orange-yellow 

 fading to light-yellow, prominent, subcuticular, irregularly conical, 120-190// broad, half as 



high. 



1. Aecia hypophyllous, from a perennial mycelium, causing h3rpertrophy of the shoot, 

 crowded over the whole under surface of the leaflets, roundish or oblong, 0.5 mm. or more 

 across, pulvinate, soon naked, orange-yellow, fading to pale-yellow, somewhat pulverulent, 

 ruptured epidermis inconspicuous; aeciospores ovoid or ellipsoid, 18-24 by 27-40// ; wall 

 colorless, thick, 2.5-3.5//, densely and minutely verrucose with round papillae. 



