APPENDIX. 205 



Uredo Hypericorum, DC. St. Joiin's-Woet Uredo; 

 spots yellowish ; sori subrotund, small, bullate, distinct, scattered 

 on the under surface ; epidermis at length bursting ; spores sub- 

 globose, cohering, orange.— On various Hyperica. August. Not 

 uncommon. (Plate VIII. figs. IZ-I, 175.) 



Uredo Caryophyllaeearum, Johnst. StitchwohtUredo; 

 spots yellowish ; sori subglobose, scattered and aggregate, minute, 

 generally on the under surface ; epidermis closed ; spores oval, at 

 length yellow. — On various Caryophyllaceo'.. Autumn. 



Uredo Quercus, Brond. Oak-leaf Uredo ; on the under 

 surface ; sori yellow, then orange, minute, ovate, and orbicular, 

 slightly prominent, scattered, solitary or agglomerated into minute 



Eatches, surrounded by the ruptured epidermis ; spores subglo- 

 ose, pellucid, not cohering.— On Oak-leaves. September. Not 

 common. 



Uredo porphyrogenita, Kze. Bird-cherry Uredo; 

 spots purplish ; sori subrotund, small, aggregate, hypogenous ; 

 epidermis at length ruptured ; spores coherent, subglobose. — On 

 leaves of Prunus Fadm. Scotland, 1863. {Rev. M. J. Berkeley.) 



Uredo yaeciniorum, P. BilberryUredo ; spots yellow- 

 brown ; sori subrotund, minute, aggregate, and scattered, on the 

 under surface of the leaves ; epidermis seldom ruptured ; spores 

 ovoid, yellowish.' — On Vaccinmm Myrtilkis and V. vitis-idaa. 

 Scotland. 



Uredo confluens, DC. Mercury Uredo; on the under 

 surface, depressed, yellow, oblong, concentric, at length con- 

 fluent ; spores nearly ovaL — On Mercurialis perennis and M. 

 minua. May, June. Common. (Plate YII. figs. 133, 134.) 



Uredo AUiorum, DC. Garlic Uredo ; spots obliterated ; 

 sori linear, oblong, and oval, on both surfaces ; spores ovoid or 

 subglobose, yellow or whitish. — On various species of Allium, 

 Common. 



* * Spores hrown. 



Uredo Statices, Desm. Sea-lavender Uredo ; sori few 

 and scattered, orbicular or oval ; spores sessile, globose, brown. 

 —On various species of Statice. 



Uredo Ciresese, A. & S. Nightshade Uredo; sori minute, 

 crowded, subrotund, slightly confluent, on the under surface ; 

 spores irregular, ovate, small, ochraceous.— On leaves of Circaa 

 lutetiana. June, July. Common. (Plate VII. figs. -135, 136.) 



Uredo bifrons, Grev. Twin-eaced Uredo. On both sur 

 faces of tlie leaves, often opposite, scattered, round, light-brown, 

 girt with the remains of the epidermis; spores globose.— On Sorrel- 

 feaves (Rumex acetosa and R. acetosella), July, September. Com- 

 mon. {Plate VII. figs, 137-139.) 



