organ parasitic mode stage note taxonomic group parasite
leaf leaf spot Capnodiales Ramularia acris
stem miner Agromyzidae Phytomyza caulinaris
stem borer Agromyzidae Phytomyza cineracea
stem miner Agromyzidae Ophiomyia ranunculicaulis
leaf down Erysiphales Erysiphe aquilegiae var ranunculi
leaf down Peronosporales Peronospora ranunculi
leaf leaf spot Entylomatales Entyloma microsporum
leaf leaf spot Entylomatales Entyloma ranunculi-repentis
leaf miner Agromyzidae Phytomyza fallaciosa
leaf miner Agromyzidae Phytomyza ranunculivora
leaf miner Sciaridae Phytosciara halterata
leaf pustule aecia Pucciniales Aecidium ranunculi-acris
leaf pustule aecia Pucciniales Puccinia magnusiana
leaf pustule aecia Pucciniales Uromyces poae
leaf pustule Urocystidales Urocystis ranunculi


the part of the plant that most conspicuously is hit by the parasite

all buds: both flower buds and leaf buds
flower: also inflorescence
leaf: also needle, phyllodium, petiole
leaf bud: also unfolding young leaf
fruit: also seed
root: also root stock, runners
root collar: also the lowest part of the stem
stem: also culm, the lower part of the peduncle, in grasses also leaf sheath
systemic: the entire above-ground plant.


borer: larva living internally, almost no outwards signs
down: 0.5-2 mm high fungal down
film: very thin cover of fungal tussue
gall: swelling and/or malformation
grazer: feeding at the outside of the plant
leaf spot discoloured, often ± necrotic, generally not galled, sign of a fungus infection
miner-borer: larve initially makes a mine, lives as a borer later
pustule: plug of fungal tissue, generally brown-black and < 2 mm
stripe: longitudinal line of fungal tissue in a grass leaf
vagrant: (aphids, mites) living freely on the plant, at higher densitiy causing malformations.


The host plant spectre of a parasite is rarely known exhaustively; this applies in particular at the species level. It is advisable therefore to check at least also the list of all parasites of this genus.


mod 14.vii.2018