The Scottish Naturalist. 121 



TRIPHRAGMIUM Link., teleuto-spores formed of three cells 

 side by side, but otherwise like those of Puccinia; uredo- 

 spores occur, but no secidio- spores are known. 



T. Ulmaria? (Schm.)(i2i3 ; Uredo-spores are Uromyces 

 Ulmaria? Sch.) 



PHRAGMIDIUM Link., teleuto-spores formed of three or more 

 cells in a row, in loose clusters on a basis like that in 

 Puccinia ; secidio-spores surrounded by a circle of clavate 

 paraphyses, but no distinct peridium recognisable ; hence 

 uredo- and aecidio-spores not easily distinguished, but the 

 former are developed singly, the latter in rows. 



A. — Phragrnidiopsis, secidio- and teleuto-spores known, 

 uredo-spores wanting. 



P. carbonarius (Schl.) (1208, Xenodochus carbonarius 

 Schl., Tweed; the uredo-spores, Lecythea Poterii 

 Lev., have not been recorded from Scotland). 



B. — Euphragmidium, all three forms of spores known, 

 and always on the same host-plant. 



Phr. subcorticium (Schr.) (1209, P nr - macronatum ; 



1296, Coleosporium pingue Lev. ; the axudio-spores 



are Lee. Rosa? Lev.) 

 Phr. Fragaria? (D.C.) (12 12, Phr. obtusm Fr.) 

 Phr. (12 10, Phr. bulbosum Schl. p,p ; violaceum sch.) 



(See note on p. ) 

 Phr. Rubi-Ida?i (Pers.) (121 1, Phr. gracile B. ; Lee. 



gyrosa B.) 



MELAMPSORA Cast, teleuto-spores of one or more cells, usually 

 divided by vertical, less often by horizontal or oblique 

 walls, united to form a compact flat spore-layer ; uredo- 

 spores borne singly on their basidia, and enclosed usually 

 in a kind of peridium ; secidium as in Puccinia. 



A. — Micromelampsora, only teleuto-spores known; none 

 in Scotland. 



B.— Hemimelampsora uredo and teleuto-spores known. 

 M. Betulina (Pers.) (1303). 



M. Populina(Jacq.)(i3oi, and 1302, M. Tremula? Tul.) 

 M. Salicis-caprea? (Pers.) (1304, M. Salicina Lev.; 



1308, Lee. mixta Lev. ; and probably 1309, Lee. 



Saliceti Lev.) 

 M. Helioscopia? (Pers.) (1300, M. Euphorbia?, Cast; 



most common as Lee. Euphorbia?, the uredo-spores). 

 M. Lini (Pers.) (131 1, Lee. Lini B.) 

 • M. Cerastii (Pers.) (1286, Uredo Caryophyllacearum 



Johnst.) 

 M. Hypericorum (D.C.) (1285, Uredo Hypericorum). 

 M. Circa? Schum. 



