Part 3, 1912] ABCIDIACBAE 203 



Roestelia lacerata Fries. Summa Veg. vScand. 510. 1849 



Koesteha carpophila Bagriis, Erb. Critt. Ital. II. 732 1878 



Roesieha laceraia x, Thaxter, Proc. Am. Acad. 22 : 266. 1887. 



rucctnia pemcillala Kuntze, Rev. Gen. 33- 508 1898 



Gymnosporangium gracile Pat. Bull. Soc. Myc". Fr. 18 : 46. 1902 



Lrymnosporangtum Oxycedri Bres. Broteria 2 • 88 1903 



Aecidium clavaHaeforme Arth. R6sult. Sci. Congr. Bot. Vienne 343. 1906. 



0. Pycnia chiefly epiphyllous and fmcticolous, gregarious, more or less crowded in 

 roundish groups 1-2 mm. across, on discolored spots 1.5-3 mm. across, punctiform, promi- 

 nent, honey-yellow becoming dark-brown, regularly conical, 130-155/. in diameter by 65- 

 100 m high ; ostiolar filaments 50-75 /x long. 



1. Aecia hypophyllous, fructicolous, and caulicolous, gregarious, on slightly discolored 

 hypertrophied areas, usually crowded in small groups on the leaf-blades, about 2-3 mm. 

 across, sometimes in somewhat larger groups on the veins, petioles, and twigs, often densely 

 aggregated on the fruits occupying part or all of the surface, cylindrical, 0.7-1.5 mm. high 

 by 0.3-0.5 mm. in diameter; peridium soon becoming lacerate, usually to base, erect or 

 spreading ; peridial cells seen in both face and side views, long and narrow, somewhat hygro- 

 scopic, often becoming somewhat curved when wet, linear in face view, 18-30 by 80-130/., 

 linear or linear-oblong in side view, 15-25 /.thick and usually slightly curved, the outer wall 

 rather thin, 1-2 /., smooth, the inner and side walls thick, 5-7 /., rather coarsely verrucose with 

 roundish or somewhat irregular papillae of varying sizes rather closely set ; aeciospores 

 globoid, 20-27 by 25-30 /t ; the wall light cinnamon-brown, rather thick, 2.5-3.5 m, moderately 

 verrucose, the pores evident, 8-10, scattered. 



On Malaceae : 



Amelanchier alnifolia Nutt., Colorado, Nebraska. 



Amelanchier canadensis (ly.) Medic. {Amelanchier Botryapium DC), Connecticut, Dela- 

 ware, Massachusetts, New Hampshire, Vermont. 



Amelanchier intermedia Spach {A. Boiryapium Hook., not DC), Massachusetts, New 

 Hampshire, Wisconsin. 



Amelanchier oblongifolia (T. & G.) Roem., Michigan. 



Am-elanchier oreophila A. Nels., Colorado. 



Amelanchier polycarpa Greene, Colorado, Wyoming. 



Am-elanchier pumila Nutt., Wyoming. 



Aronia arbuiifolia (L.) Medic. {Pyrus arbuiifolia Iv.), Massachusetts. 

 Cydonia vulgaris (I,.) Pers., Connecticut, Maine. 



III. Telia caulicolous, from a perennial mycelium, appearing on long fusiform swellings 

 of various sized branches, numerous , scattered or sometimes aggregated, cylindrical or 

 slightly compressed, 5-lOmm. longby 0.8-1.5 mm. in diameter, acute or sometimes forked at 

 the apex, brownish-yellow becoming yellowish and pulverulent by germination ; teliospores 

 2-celled, lanceolate, 13-20 by 50-80 /*, occasionally longer, rounded or narrowed above, 

 usually narrowed below, very slightly or not at all constricted at the septum ; wall golden- 

 yellow, thin, about 1 ju, the pores 2 in each cell, near the septum; pedicel cylindrical, uni- 

 form, 3-4 /t in diameter, very long. 



On Juniperaceae : 



Juniperus communis I,., Connecticut, Illinois, Iowa, Mame, Massachusetts, Minnesota, 



New Hampshire, New York. 

 Juniperus sibirica Burgsd. (/. nana Willd.), Colorado, Ilhnois, Michigan. 

 Type locality : Carinthia, or^^^ Juniperus communis. 

 ■ Distribution : Maine and Delaware west to Wisconsin and northeastern Iowa, and in north- 

 western Nebraska, Wyoming, and Colorado ; also in Europe. . . „ 



Illustrations: Beitr. Krypt. Schweiz 2^ : /. ^Z5 ; Hedwigia34: 3,/. J; Grev. Scot. Crypt. 

 Fl. pU 209 ; Bot. Gaz. 49 : pL 21, /. 6 ; Bull. N. Y. Bot Gard. 7 : ^5, f26; pi 158. _ _ 



KxSicCATi: Seym. & Earle, Hcon. Fungi 241, 242a, b, c; Elhs, N. Am. Fungi 273 ; Elhs & 



Ev. Fungi Columb. 56. 



24. Gymnosporangium Ellisii (Berk.) Farl.; Ellis, N. Am. 



Fungi 271. 1879. 



Podisoma Ellisii Berk. Grevillea 3 : 56. 1874. 

 y/a?w^5/'ora^//mVK6rn. Hedwigial6: 23. 1877. 

 Phragmidium Ellisii De-Toni, in Sacc. Syll. Fung. 7 : 750. 1888. 

 Tremella Elhsii A.rt)i. Proc. Ind. Acad. Sci. 1900 : 135. 1901. 



O and I. Pycnia and aecia unknown. 



III. Telia caulicolous, from <x perennial mycelium which distorts the younger branches 

 causing slight enlargements and usually dense fasciations, numerous, thickly scattered, 



