324 The Scottish Naturalist. 



IIT. Not yet observed in Scotland. 

 Tay, Argyle, Dee ! Orkney ! 



Subgenus 2. Pucciniastrum Otth. 



(Teleutospores formed outside the epidermal cells, each with from 

 1 to 3 transverse or oblique septa.) 



121. M. pustulata (Pers.). On Epilohium palustre, and E. 

 angustifolium. Autumn. 



II. (= Uredo pustulata Pers., Greville's Flor. Eclhi., p. 440; 

 M.S., 1284). 



III. , not yet recorded from Scotland. 

 Forth (Greville), Tay. 



122. M. Circseae (Schum.), (Scot. Nat., N.S., I.,i2i). On *C. 

 lutetiana ! and *C. intermedia. Autumn. 



Only uredospores have been observed in Scotland. 

 Forth/ Clyde! Tay! Dee! 

 (Teleutospores formed in the epidermal cells, becoming conflu- 

 ent into small irregular masses. Uredospores in pustular 

 heaps.) 



123. M. Padi (K. & S.). On leaves of Prunus Padus ! 

 Summer — Autumn ! Up to 1,500 ft. 



II. (Uredo porphyrogenita Kze., M.S. 1287.) 

 Tay ! Dee ! Moray ! 



Subgenus 3. Thecopsora Magnus. 



124. M. Vacciniorum (Link). On leaves of Vaccinium Myr- 

 tillus! V. Vitis-idcea I and Vi uliginosum\ Autumn. 



II. (Uredo Vacciniorum Link, M.S. 1288.) 



Tweed, Forth ! Clyde ! Tay ! Argyle ! Dee ! Moray ! 

 Orkney ! 



125. M. Pyrolae (Gmelin.). On leaves of Pyrola minor ! and 

 P. media ! May ! Autumn ! 



IT. (Uredo Pyrolce Greville's Flor. Fdin., p. 440; Tricho- 

 basis Pyrolce Berk. M.S., 13 15.) The teleutospores 

 have not been observed in Scotland. 

 Tweed, Forth ! Tay, Dee ! Moray. 



Subgenus 4. Melampsorella Schroter. 



(Teleutospores formed inside the epidermal cells, aseptate, hyaline 

 forming confluent crusts. Uredospores in a pseudoperidium.) 



126. M. Cerastii (Pers.). On C&rastium arvense ! and Stellaria 



