CRYPTOGAMIA FUNGI. 195 



Hob. On the under side of the leaves of ragwort, not com. 

 mon. 



11. P. Menthcs, capsules on a filiform stalk, ovate, very obtuse, 

 collected into small round dark brown spots, scattered on the leaf, 

 or sometimes arranged circularly. HOOK. Scot. ii. 17 GREV. FL 

 Edin. 430. 



Hal. On the under side of the leaves of wild mint, the 

 opposite surface spotted with yellow. Autumn. 



12. P. Avicularia, capsules brown, ovate, short, on a long pel- 

 lucid slightly incurved stalk, collected into dark brown linear or 

 subcircular spots GREV. Fh Edin. 429. HOOK. Scot. ii. 17- 



Hob. On the stems and leaves of the common knot-grass. 



The upper cell of the capsule is small, and the septum rather 

 obscure. The stalk is often inflated towards the base. 



13. P..Graminis, capsules clavate, rather large, tapering into a 

 filiform stalk, collected into black linear spots margined with the 

 ruptured epidermis. HOOK. Scot. ii. 17- GREV. FL Edin. 433. 

 LOUD. Encyclop. No. 16710. Uredo Frumenti, Sow. Fwig. 

 t. 140. 



Hob. On the culms and sheaths of grasses, frequent. 



14. P. arundinacea, capsules oblong, much contracted at the 

 septum, on a long filiform stalk, collected into linear-oblong com- 

 pact brown spots Bot. Gall. ii. 889. P. graminis, var. arundinis, 

 GREV. FL Edin. 433. 



Hob. On the leaves and sheaths of reeds. 



15. P. Polygon^ capsules ovate, the upper cell thick, globose, 

 the lower one long and narrow, on a short stalk, and collected into 

 minute round dark brown spots. GREV. FL Edin. 430. HOOK. 

 Scot. ii. 17- 



Hob. On the under surface of the leaves of Polygonum am- 

 phibium, var. terrestre. Autumn. 



" Uredo Potygonorum is very commonly found along with the 

 Puccinia, and the latter is then frequently arranged in a 

 circular manner round the former." GREVILLE. 

 I 2 



