Ii6 The Scottish Naturalist. 



swollen below, 42-51 ^ long, 8-9 p. broad; sporidia 

 6, nearly triseriate, clavato-fusiform, one septum in 

 the centre, not constricted, straight or curved, hyaline, 

 17-24 ll. long, sometimes 18-21 fx., 3-4 /*. rarely, 5 /u. 

 broad. 



On decayed leaves of Comarum palustre. May. 



East. — — — — Moray — 



West. — — — — 



Forres. Rev. Dr. Keith. 



England. Europe. 



3004. S. proximella Karst. Myc. Fenn. Ft. II. p. 177. 



Perithecia (when on leaves, amphigenous) scattered, 

 innate, spherical, pierced with a simple mouth, black, 

 scarcely 100 /n. broad; asci sessile, oblong-subclavate, 

 64-74 ll. long, 20-24 fx. thick; sporidia 8, in 2 or 3 rows, 

 subovoid-oblongate, slightly attenuated at the apices, 

 uniseptate, each division with 2 minute nuclei, very 

 slightly constricted at the septum, hyaline, 20-24 ll. 

 long, 8-10 ll. thick. 



On the axis of fertile spikes of Carex ampullacea after 

 shedding the fruits. May. 



East. — — — — Moray — 



West. — — — — 



Forres. Rev. Dr. Keith. 



( To be continued.) 



HETEKCEOISM IN THE UKEDINES. 

 By J. W. H. TRAIL. 



( Continued from page 84. ) 



ANY classification yet suggested for the Uredines must be re- 

 garded as tentative, and as certain to require very consider- 

 able modification in its details when a fuller knowledge of the life- 

 history of the various species is gained. As a case in point, we 

 may instance Puctinia anmdinacea .F>.C, placed by Winter in his 

 group Hemipuccinia (characterised by possessing only uredo and 

 teleuto-spores, but not secidio-spores), under the name F. Phrag- 

 mitis Schnm. M. Cornu (Compt. rend. Vol. XCIV., 1882, JVo. 26) 

 states that he has succeeded in causing the spores of this fungus 

 to germinate on Ranunculus repe7is, and to produce on the latter 

 plant an jEcidium, formerly referred to JEc. Ranimculacearum ; 

 and he also states that the same jEcidium is met with on R. bul- 

 oosus, R. acer, R. sceleratus, and R. Flammula. It will be 

 observed below that jEcidia are said to be produced on some of 

 the same species of Ranunculus by Uromyces Dactylidis Otth. 



