TRIPHRAGMIUM 287 



Tt should be noted that there is an secidium belonging to P. longissima, on 

 species of Sedum, formerly called by mistake Endophyllum Sedi. This 

 has been found on S. acre, and according to Mayor (Annal. Mycol 1911, 

 ix. 341) on S. reflexum, but not, so far as I know, as yet in Britain. 

 Further search in the Highlands will no doubt readily decide which of the 

 two species occurs there. 



TRIPHRAGMIUM Link 



Autcecious. 



Spermogones subcuticular, flattish, without ostiolar fila- 

 ments. Cseomata indefinite, large, without paraphyses ; uredo- 

 sori small, definite, encircled by paraphyses ; spores in both 

 borne singly on pedicels: pores not evident. Teleuto-sori more 

 or less definite ; spores coloured, radiately 3-celled, more or less 

 verrucose, with one pore in each cell, equidistant from the septa, 

 i.e. apical. 



It is most likely that the foreign species, usually classed 

 with ours on account of the form of the teleutospores, are not 

 closely allied. Spores of this particular shape are met with, 

 abnormally, in other genera, as in several species of Puccinia, 

 even in Puccinia graminis. Neither is this genus closely allied 

 to Phragmidium ; the teleutospores have no gelatinous outer 

 coat, and the germ-pores are differently placed. 



Triphragmium Ulmariae Wint. 



Uredo Ulmariae Schum. Enuni. PL Sail. ii. 227. 



Uromyces Ulmariae Lev. ; Cooke, Micr. Fung. p. 212, pi. 7, f. 147 — 8. 



Triphragmium Ulmariae Wint. Pilze, p. 225. Cooke, Handb. \>. 492 ; 



Micr. Fung. p. 202, pi. 3, f. 47—9. Plowr. Ured. p. 218, pi. 4, f. (i. 



Sacc. Syll. vii. 768. Fischer, Ured. Schweiz, p. 423, f. 293. 



Arthur, N. Amer. Fl. vii. 178. Sydow, Monogr. iii. 171. 

 T. Filipendulae Pass. Nuov. Giorn. Bot. Ital. vii. 255. Cooke, 



Grevillea, xi. 15. Plowr. Ured. p. 219. Massee, in Grcvillea, 



xxi. 115. Fischer, Ured. Schweiz, p. 425, f. 294. Sacc. Syll vii. 



769. Sydow, Monogr. iii. 174. 



