862 Uredinales, Urodinacese iufer., Perideriuiuin. 



et tVagili ; cellnlis peridialibus iu sectioue radiali oblougis v. li- 

 uearibus 32-42 * 10-16, tuuica extus 1-2 (x cr.. levi, iutus 3-5 |i cr., 

 adpresse verrucosa tuberculis elougatis praedita ; aecidiosporis glo- 

 bosis V. late ellipsoideis, 10-23*13-10; tuuica hyaliua, 2-3 |i cr., 

 tuberculis crassis deciduis praedita. 



Huh. iu foliis P i c e a e c a u a d e u s i s , Wisconsiu et Ver- ^ 

 niont, America bor. — Ad Puccimastram verisiuiiliter pertineuS. A 



2. Peridermium apocynaceum Hedg. et Hnut, Mycologia, v. 12., 1920, 2972 

 p. 183. 



Hal). iu foliis P i u i c a r i b a e a e, p a 1 u s t r i s , T a e d a e , 

 iu Florida, Anier. bor. — Ad Coleospor. apocynaceum Cke pertiiiet. 



3. Peridermium Elephantopodis Hedgk. et Halm, Mycologia 12., 1920, 2973 



1». 190. 



Hah. iii foliis P i n i c a n a r i e u s i s , c a r i b a e a e , c o iv 

 t o r t a e , C o u 1 t e r i , e c li i n a t a e , M a y r i a, n a e , p a 1 u- 

 s t r i s , r a d i a t a e , r i g i d a e , s e r o t i n a e , T a e d a e, in 

 Anierica bor. — Ad Coleosp. Elephantopodis Th. pertiuet. 

 1. Peridermium Betheli Hedg. et Long, Phytopatliology III, p. 251 2974 

 (1913). — Pycnidiis, iguotis ; aecidiis caulicolis, sparsis vel pauci- 

 couflueutibus, rotundatis vel irregularibus, 2-6 nim. longis, 2-4 la- 

 tis, 1-2 altis, pseudoperidio vesiculoso, subhemisphaerico, irregu- 

 lariter sese rumpente, superficie externa miuute et crebre verru- Ji 



cosa, interna quoque crebre verrucoso-tuberculata ; cellulis pseu- 

 doperidii margine radiato-striatis, pariete 2-4 [x crassa, lumine lato, 

 globosis, ellipsoideis vel oblongis interioribus saepe compressis ; 

 aecidiosporis ovoideis, ellipsoideis, limouiformibus vel piriformibus, 

 15-25*25-28, plerumque uuo apice acutatis, membrana hyaliua 

 3-4 \i. cr. apicem versus crassiore, minute denseque verrucosa, inter- 

 dum simulate reticulata. 



Hab. iii ramis truncisque P i n i c o n t r t a e , Colorado (E. 

 Bethel). 



5. Peridermium ribicola Long, Mycologia 8., 1916, p. 3io. 2975 



Hab. in foliis Pini edulis et pineae, America bor. — 

 Ad Goleospor. rihicola Arth. verisimiliter pertinet. 



6. Peridermium minutum Hedgkock et K E. Hunt, Mycologia, 1917, 2976 

 p. 242. — Pycnidiis sob'taris v. paucis, fulvis v. brunneis 0,5x0,3 

 mm.; aecidiis sparsis v. seriatis, inconspicuis, lateraliter applanatis, 

 0,7x0,5x0,4 mm.; pseudoi)eridiis fragilibus, longitudinaliter fissis, 

 acie fimbriata; cellulis ovato-ellipsoideis v. rhomboideis, imbricatis, 



48 * 21, membraua 2-4 [x cr., interiore tenuiter verrucoso-papillata ; 



