■'>6H THK IIUSTS OI- NOVA SCOTIA. — I'KASKK. 



1 (!-!!» In 21-;l(»iu; wall (•<»l(jurl(;.s.s, tliin, <'!osely and ]irt»iiiiuently 

 vcrnicose with (IfHdduons tubereules ; contonts (trange. 



ill. Telia hypophyllous, rather small, ruptured epidermis 

 (•iiusj)ieuous, 130-500/u. aci'os.s, pale orangey inconspicuous. 

 Tcliospores oljlong, li>-19 by Ifi-BBju. in a series 60-100/". long; 

 wall unifornilv ihin, colourless, smooth, contents orange-red. 



Pycnia and aecia on Pico.a niariana (Mill.) BSP., Pictou. 



T'^redinia and tclia on ( H) n ma p daphne ralycalata (L.) 

 Miiench., Pictou. 



The teliospores of this rust were licrminating b\- dune 13, 

 and aecia were inatinc by duly 17. The telial stage is fairly 

 conspicuous when gcniiiiiatiiig. biil rather iiicons]»iciinii-; before 

 germination. 



Cultures l)y the writer (Mycolugia 3 :(;8, tjl). llUlj and 

 field observations showed that Peridermium consimile Arth. 

 and Kern, is the aecial stage. Clinton (lieport Conn. Agr. 

 Exper. Sta., pt. 0:386. 1907) described infection experiments 

 that led to the same conclusion. 



Melampsoropsis Chiogenis fr)ietel) Arthur. 

 ('hrysonij/.ra ('hiogents Deitel. 

 &' T. Pycnia and aecia uid<nown. 



TT. I'redinia liy])oi)hyllouSj scattered, roundish or irregu- 

 lar, fiat, honey-yellow; poridium delicate, walls thin, smooth. 

 TTrediniospores cat/enulatr\ oblong to linear oblong, 14-21 by 

 22-40^; wall colourless, C/Oarsely verrucose with somewhat 

 deciduous tubereules. medium thick; contents orange-yellow 

 when fresh. 



ill. Telia hypophyllous. loosely scattered, round, small. 

 oi-;iiige-yell<tw fading to j>ale yellow, soon naked, ruptured 

 epidennis noticeable; tcliospores broadly oblong or squarish. 

 7-10 by 13-16/x in a series 30-80/u long; wall colourless, smooth, 

 thin. 



