APPENDIX. 205 



Uredo Hypericorum, DC. St. John's-Wort Uredo ; 

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

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

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

 uncommon. (Plate Vlll. figs. 174, 175.) 



Uredo Gary ophyllaceanirQ, Johnst. StitchwortUredo; 

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

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

 length yellow. — On various Caryophyllacea>. 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 

 patches, surrounded by the ruptured epidermis ; spores subglo- 

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

 common. 4 



Uredo porphyrogenita, Kze. Bird-cherry Uredo; 

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

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

 leaves of Prunus Padus. Scotland, 18G3. {Rev. M. J. Berkeley) 



Uredo Vaccinioruni, 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 Vaccinium Myrtillns 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 Mercnrudls perennis and M. 

 annua. May, June. Common. (Plate VII. figs. 133, 134.) 



Uredo Alliorum, 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 brown. 



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

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

 — On various species of Statice. 



Uredo Circsese, 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, 13G.) 



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

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

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

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

 mon. (Plate VII. figs. 137-139 ) 



