=Uredo Potentillarum=, DC. POTENTILLA UREDO; spots yellowish; sori subrotund and oval, bullate, aggregate, open, confluent; spores subglobose, subcoherent, orange.—On various _Rosaceæ_. Common. =Uredo Saxifragarum=, DC. SAXIFRAGE UREDO; spots pallid; sori subrotund and oval, raised, scattered and aggregate on the under surface; epidermis ruptured, persistent; spores subglobose, yellow.—On various _Saxifrages_. =Uredo Filicum=, Desm. FERN UREDO; spots yellowish; sori subrotund, bullate, scattered and aggregate on the under surface; epidermis at length bursting; spores subglobose, yellow.—On Ferns (_Cystopteris_, &c.) Not common. =Uredo pustulata=, P. WILLOW-HERB UREDO; spots yellowish; sori subrotund, minute, closed, scattered and confluent on both surfaces; spores globose, yellow.—On _Epilobium palustre_. =Uredo Hypericorum=, DC. ST. JOHN’S-WORT UREDO; spots yellowish; sori subrotund, small, bullate, distinct, scattered on the under surface; epidermis at length bursting; spores subglobose, cohering, orange.—On various _Hyperica_. August. Not uncommon. (Plate VIII. figs. 174, 175.) =Uredo Caryophyllacearum=, Johnst. STITCHWORT UREDO; spots yellowish; sori subglobose, scattered and aggregate, minute, generally on the under surface; epidermis closed; spores oval, at length yellow.—On various _Caryophyllaceæ_. 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 subglobose, 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 Padus_. Scotland, 1863. (_Rev. M. J. Berkeley._) =Uredo Vacciniorum=, P. BILBERRY UREDO; spots yellow-brown; sori subrotund, minute, aggregate, and scattered, on the under surface of the leaves; epidermis seldom ruptured; spores ovoid, yellowish.—On _Vaccinium Myrtillus_ and _V. vitis-idæa_. Scotland. =Uredo confluens=, DC. MERCURY UREDO; on the under surface, depressed, yellow, oblong, concentric, at length confluent; spores nearly oval.—On _Mercurialis 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 few and scattered, orbicular or oval; spores sessile, globose, brown.—On various species of _Statice_.