Foodplant / feeds on
larva of Bagous tempestivus feeds on Ranunculus repens
Plant / epiphyte
effuse colony of Chromelosporium anamorph of Chromelosporium ochraceum grows on live leaf of Ranunculus repens
Foodplant / open feeder
adult of Chrysolina staphylaea grazes on live leaf of Ranunculus repens
Remarks: season: early 7-late 10,4-
Other: major host/prey
Foodplant / saprobe
apothecium of Crocicreas starbaeckii is saprobic on previous year's fibrous remains runner of Ranunculus repens
Remarks: season: 4-9
In Great Britain and/or Ireland:
Foodplant / parasite
immersed sorus of Entyloma microsporum parasitises live leaf of Ranunculus repens
Remarks: season: (5,) 9-10
Foodplant / parasite
superficial Entylomella anamorph of Entyloma ranunculi-repentis parasitises live leaf of Ranunculus repens
Other: minor host/prey
Foodplant / parasite
cleistothecium of Erysiphe aquilegiae var. ranunculi parasitises Ranunculus repens
Foodplant / internal feeder
larva of Leiosoma deflexum feeds within stolon of Ranunculus repens
Foodplant / saprobe
apothecium of Leptotrochila ranunculi is saprobic on fibrous remains Ranunculus repens
Foodplant / open feeder
larva of Monophadanus pallescens grazes on leaf of Ranunculus repens
Foodplant / parasite
sporangium of Peronospora ranunculi parasitises live Ranunculus repens
Other: major host/prey
Foodplant / open feeder
adult of Phaedon concinnus grazes on flower of Ranunculus repens
Remarks: season: 4-10
Foodplant / spot causer
pycnidium of Phyllosticta coelomycetous anamorph of Phyllosticta ranunculorum causes spots on live leaf of Ranunculus repens
Remarks: season: 9
Plant / resting place / within
puparium of Phytomyza fallaciosa may be found in leaf-mine of Ranunculus repens
Foodplant / miner
larva of Phytomyza notata mines leaf of Ranunculus repens
Other: major host/prey
Plant / resting place / on
adult of Plateumaris sericea may be found on flower of Ranunculus repens
Remarks: season: (1-)6(-12)
Foodplant / miner
solitary larva of Pseudodineura fuscula mines leaf of Ranunculus repens
Foodplant / spot causer
hypophyllous, in small groups aecium of Puccinia magnusiana causes spots on live leaf of Ranunculus repens
Foodplant / spot causer
amphigenous, but mainly epiphyllous colony of Ramularia anamorph of Ramularia didyma var. didyma causes spots on live leaf of Ranunculus repens
Foodplant / spot causer
hypophyllous colony of Ramularia anamorph of Ramularia simplex causes spots on live leaf of Ranunculus repens
Remarks: season: 7-10
Other: major host/prey
Foodplant / saprobe
usually epiphyllous, punctiform, brownish-black pycnidium of Septoria coelomycetous anamorph of Septoria ranunculacearum is saprobic on leaf of Ranunculus repens
Remarks: season: 8
Foodplant / open feeder
nocturnal larva of Tenthredo mesomelas grazes on leaf of Ranunculus repens
Foodplant / sap sucker
Thecabius affinis sucks sap of live leaf of Ranunculus repens
Remarks: season: summer
Plant / resting place / on
larva of Thrips discolor may be found on live leaf of Ranunculus repens
Remarks: season: 8-9
Foodplant / gall
colony of Urocystis anemones causes gall of live, blistered stem of Ranunculus repens
Remarks: season: 4-9
Other: major host/prey
Foodplant / parasite
immersed sorus of Urocystis ranunculi parasitises live petiole of Ranunculus repens
Remarks: season: 4-9
Other: major host/prey
Foodplant / parasite
aecium of Uromyces dactylidis parasitises live petiole of Ranunculus repens
Remarks: season: early Spring