Eltrot

Foodplant / saprobe
ascoma of Acrospermum compressum is saprobic on dead stem of Heracleum sphondylium

Foodplant / internal feeder
larva of Agapanthia villosoviridescens feeds within stem of Heracleum sphondylium

Foodplant / saprobe
effuse colony of Alternaria dematiaceous anamorph of Alternaria alternata is saprobic on dead stem of Heracleum sphondylium

Foodplant / sap sucker
Aphis fabae sucks sap of Heracleum sphondylium

Foodplant / saprobe
superficial perithecium of Arnium apiculatum is saprobic on dead stem of Heracleum sphondylium
Remarks: season: 2

In Great Britain and/or Ireland:
Foodplant / saprobe
immersed, covered, then erumpent or free, black pycnidium of Ascochyta coelomycetous anamorph of Ascochyta heraclei is saprobic on fading leaf of Heracleum sphondylium
Remarks: season: 8-9

Foodplant / saprobe
sessile apothecium of Belonidium sulphureum is saprobic on dead stem of Heracleum sphondylium
Remarks: season: 8-10

Foodplant / saprobe
sclerotium of Botryotinia fuckeliana is saprobic on dead stem of Heracleum sphondylium
Remarks: season: winter-early spring

Foodplant / saprobe
effuse colony of Botrytis dematiaceous anamorph of Botrytis cinerea is saprobic on dead stem of Heracleum sphondylium

Plant / associate
adult of Bruchidius villosus is associated with flower of Heracleum sphondylium

Plant / resting place / on
adult of Callosobruchus chinensis may be found on Heracleum sphondylium

Foodplant / saprobe
gregarious, shortly stalked apothecium of Calycina herbarum is saprobic on dead stem of Heracleum sphondylium
Remarks: season: 9-12

Foodplant / saprobe
effuse colony of Camposporium dematiaceous anamorph of Camposporium pellucidum is saprobic on dead stem of Heracleum sphondylium

Foodplant / sap sucker
Cavariella sucks sap of Heracleum sphondylium
Remarks: season: summer
Other: major host/prey

Foodplant / sap sucker
large colony of Cavariella aegopodii sucks sap of flower stem of Heracleum sphondylium
Remarks: season: summer

Foodplant / sap sucker
large colony of Cavariella pastinacae sucks sap of flower stem of Heracleum sphondylium
Remarks: season: summer

Foodplant / saprobe
basidiome of Ceriporiopsis gilvescens is saprobic on dead, standing stem of Heracleum sphondylium
Other: minor host/prey

Foodplant / saprobe
effuse colony of Chalara dematiaceous anamorph of Chalara urceolata is saprobic on dead stem of Heracleum sphondylium

Foodplant / saprobe
effuse colony of Chromelosporium anamorph of Chromelosporium ochraceum is saprobic on dead stem of Heracleum sphondylium

Foodplant / feeds on
adult of Chrysolina oricalcia feeds on pollen of Heracleum sphondylium
Remarks: season: (3-)5-6(-10)
Other: uncertain

Foodplant / saprobe
acervulus of Colletotrichum coelomycetous anamorph of Colletotrichum dematium is saprobic on dead petiole of Heracleum sphondylium

Foodplant / visitor
adult of Conops visits for nectar and/or pollen flower of Heracleum sphondylium

Foodplant / saprobe
apothecium of Crocicreas cyathoideum var. cyathoideum is saprobic on dead stem of Heracleum sphondylium
Remarks: season: 3-10

Foodplant / saprobe
effuse colony of Cylindrotrichum dematiaceous anamorph of Cylindrotrichum oligospermum is saprobic on dead stem of Heracleum sphondylium
Remarks: season: 4-9

Foodplant / saprobe
effuse colony of Dactylella anamorph of Dactylella arnaudii is saprobic on dead, rotting stem of Heracleum sphondylium
Remarks: season: 8-9

Foodplant / saprobe
effuse colony of Dactylosporium dematiaceous anamorph of Dactylosporium macropus is saprobic on dead stem of Heracleum sphondylium
Other: minor host/prey

Foodplant / saprobe
effuse colony of Dendryphiella dematiaceous anamorph of Dendryphiella infuscans is saprobic on dead stem of Heracleum sphondylium
Remarks: season: 4-5

Foodplant / saprobe
effuse colony of Dendryphiella dematiaceous anamorph of Dendryphiella vinosa is saprobic on dead stem of Heracleum sphondylium
Remarks: season: 5-9

Foodplant / saprobe
colony of Dendryphion dematiaceous anamorph of Dendryphion comosum is saprobic on dead stem of Heracleum sphondylium
Remarks: season: 1-12

Foodplant / saprobe
colony of Dendryphion dematiaceous anamorph of Dendryphion nanum is saprobic on dead stem of Heracleum sphondylium

Foodplant / saprobe
immersed perithecium of Diaporthe arctii is saprobic on dead, blackened stem of Heracleum sphondylium
Remarks: season: 7-11

Foodplant / saprobe
pycnidium of Phomopsis coelomycetous anamorph of Diaporthopsis angelicae is saprobic on dead stem of Heracleum sphondylium
Remarks: season: 7-4
Other: major host/prey

Foodplant / saprobe
effuse colony of Dictyosporium dematiaceous anamorph of Dictyosporium toruloides is saprobic on dead stem of Heracleum sphondylium
Remarks: season: 1-12

Foodplant / saprobe
sessile apothecium of Discocistella grevillei is saprobic on dead stem of Heracleum sphondylium
Remarks: season: 4-8

Foodplant / saprobe
colony of Epicoccum dematiaceous anamorph of Epicoccum nigrum is saprobic on dead stem of Heracleum sphondylium
Remarks: season: 1-12

Foodplant / parasite
cleistothecium of Erysiphe heraclei parasitises live Heracleum sphondylium

Foodplant / miner
larva of Euleia heraclei mines live leaf of Heracleum sphondylium

Foodplant / sap sucker
nymph of Eysarcoris venustissimus sucks sap of ripening fruit of Heracleum sphondylium
Remarks: season: 8+

Foodplant / visitor
imago (female) of Fannia immutica visits for nectar and/or pollen umbel of Heracleum sphondylium

Foodplant / saprobe
colony of Fusariella dematiaceous anamorph of Fusariella hughesii is saprobic on dead stem of Heracleum sphondylium
Remarks: season: 4-6

Foodplant / saprobe
effuse colony of Gliomastix dematiaceous anamorph of Gliomastix luzulae is saprobic on dead stem of Heracleum sphondylium
Other: major host/prey

Foodplant / sap sucker
Hyadaphis foeniculi sucks sap of Heracleum sphondylium
Remarks: season: summer

Foodplant / saprobe
sessile apothecium of Lasiobelonium mollissimum is saprobic on dead stem of Heracleum sphondylium
Remarks: season: 4-7

Foodplant / saprobe
superficial, gregarious perithecium of Lasiosphaeria caudata is saprobic on dead stem of Heracleum sphondylium
Remarks: season: 7-8

Foodplant / saprobe
immersed, sometimes becoming free pseudothecium of Leptospora rubella is saprobic on dead stem of Heracleum sphondylium
Remarks: season: 4-8

Foodplant / internal feeder
larva of Liparus germanus feeds within rootstock of Heracleum sphondylium

Foodplant / saprobe
immersed or semi-immersed pseudothecium of Lophiostoma caulium is saprobic on dead stem of Heracleum sphondylium
Remarks: season: 1-12

Plant / resting place / within
ovum of Melanagromyza angeliciphaga may be found in hollow stem of Heracleum sphondylium
Other: minor host/prey

Foodplant / saprobe
at first immersed, later often erumpent pycnidium of Phoma coelomycetous anamorph of Metasphaeria complanata is saprobic on dead stem of Heracleum sphondylium
Other: major host/prey

Foodplant / saprobe
extensive, velvety colony of Cladosporium dematiaceous anamorph of Mycosphaerella tulasnei is saprobic on dead stem of Heracleum sphondylium
Remarks: season: 1-12

Foodplant / saprobe
colony of Verticillium anamorph of Nectria inventa is saprobic on dead stem of Heracleum sphondylium
Remarks: season: 1-12

Foodplant / saprobe
immersed, sometimes becoming superficial pseudothecium of Ophiobolus erythrosporus is saprobic on dead stem of Heracleum sphondylium

Foodplant / miner
larva of Ophiomyia heracleivora mines leaf (petiole) of Heracleum sphondylium
Other: sole host/prey

Foodplant / feeds on
adult of Orsodacne cerasi feeds on anther of Heracleum sphondylium
Remarks: season: 4-9

Foodplant / sap sucker
nymph (late instars) of Palomena prasina sucks sap of unripe fruit of Heracleum sphondylium

Foodplant / saprobe
effuse colony of Periconia dematiaceous anamorph of Periconia byssoides is saprobic on dead, patchily blackened stem of Heracleum sphondylium

Foodplant / saprobe
effuse colony of Periconia dematiaceous anamorph of Periconia cookei is saprobic on dead stem of Heracleum sphondylium

Foodplant / open feeder
larva of Phaedon tumidulus grazes on live leaf of Heracleum sphondylium
Remarks: season: -late 8
Other: uncertain

Foodplant / parasite
scattered or in small groups, mainly hypophyllous, immersed, brown-black acervulus of Phloeospora coelomycetous anamorph of Phyllachora heraclei parasitises fading leaf of Heracleum sphondylium
Remarks: season: 7-10

Foodplant / miner
larva of Phytomyza heracleana mines leaf of Heracleum sphondylium
Other: sole host/prey

Plant / associate
larva of Pipiza austriaca is associated with Heracleum sphondylium

Foodplant / parasite
hypophyllous colony of sporangium of Plasmopara crustosa parasitises live leaf of Heracleum sphondylium

Foodplant / saprobe
effuse colony of Stemphylium dematiaceous anamorph of Pleospora allii is saprobic on dead Heracleum sphondylium

Foodplant / saprobe
colony of Stemphylium dematiaceous anamorph of Pleospora herbarum is saprobic on dead stem of Heracleum sphondylium

Foodplant / saprobe
effuse colony of Pleurophragmium dematiaceous anamorph of Pleurophragmium parvisporum is saprobic on dead stem of Heracleum sphondylium
Remarks: season: 1-12

Foodplant / spot causer
colony of Pseudocercosporella anamorph of Pseudocercosporella pastinacae causes spots on live leaf of Heracleum sphondylium

Foodplant / parasite
aecium of Puccinia heraclei parasitises live petiole of Heracleum sphondylium

Foodplant / saprobe
erumpent apothecium of Pyrenopeziza adenostylidis is saprobic on dead stem of Heracleum sphondylium
Remarks: season: 5-11

Foodplant / saprobe
apothecium of Pyrenopeziza revincta is saprobic on dead stem of Heracleum sphondylium

Foodplant / spot causer
amphigenous, in small scattered groups colony of Ramularia hyphomycetous anamorph of Ramularia heraclei causes spots on live leaf of Heracleum sphondylium

Foodplant / saprobe
fruitbody of Resinicium bicolor is saprobic on dead, decayed stem of Heracleum sphondylium
Other: unusual host/prey

Foodplant / saprobe
scattered, subepidermal, black pycnidium of Rhabdospora coelomycetous anamorph of Rhabdospora pleosporoides is saprobic on old, dead stem of Heracleum sphondylium
Remarks: season: 1-3

Foodplant / saprobe
superficial colony of Sarcopodium dematiaceous anamorph of Sarcopodium circinatum is saprobic on dead stem of Heracleum sphondylium

Foodplant / saprobe
tufted colony of Septofusidium anamorph of Septofusidium herbarum is saprobic on dead petiole of Heracleum sphondylium

Foodplant / saprobe
effuse colony of Sporidesmiella dematiaceous anamorph of Sporidesmiella hyalosperma var. hyalosperma is saprobic on dead stem of Heracleum sphondylium
Remarks: season: 2-10

Foodplant / saprobe
colony of Stachybotrys dematiaceous anamorph of Stachybotrys dichroa is saprobic on dead stem of Heracleum sphondylium
Remarks: season: 4-9

Foodplant / saprobe
effuse colony of Stachylidium dematiaceous anamorph of Stachylidium bicolor is saprobic on dead stem of Heracleum sphondylium

Foodplant / pathogen
synnema of Symphyosira anamorph of Symphyosirinia heraclei infects and damages fallen fruit of Heracleum sphondylium
Remarks: season: 8

Foodplant / pathogen
embedded chlamydospore of Taphridium umbelliferarum infects and damages live leaf of Heracleum sphondylium
Remarks: season: 4-6

Foodplant / saprobe
effuse colony of Torula dematiaceous anamorph of Torula herbarum is saprobic on dead stem of Heracleum sphondylium

Foodplant / visitor
imago of Trichius fasciatus visits for nectar and/or pollen flower of Heracleum sphondylium

Foodplant / saprobe
effuse colony of Trichocladium dematiaceous anamorph of Trichocladium opacum is saprobic on dead stem of Heracleum sphondylium

Foodplant / saprobe
colony of Trichoderma dematiaceous anamorph of Trichoderma koningii is saprobic on dead stem of Heracleum sphondylium

Plant / associate
basidiome of Trimorphomyces papilionaceus is associated with dead stem of Heracleum sphondylium

Foodplant / saprobe
fruitbody of Typhula uncialis is saprobic on dead, decaying stem of Heracleum sphondylium
Remarks: season: spring-summer
Other: major host/prey

Foodplant / saprobe
apothecium of Unguiculella hamulata is saprobic on dead stem of Heracleum sphondylium
Remarks: season: 5-9

Heracleum sphondylium L. Sp. PI. 249. 1753
Sphondylium vulgare S. F. Gray, Nat. Arr. Brit. PI. 2: 520. 1821.
Selinum Sphondylium E. H. L. Krause in Sturm, Fl. Deuts. ed. 2. 12: 136. 1904.
Plants 0.6-2 m. high, short-pubescent to glabrate; leaves ovate to orbicular in general outline, excluding the petioles 16-20 cm. long, 18-25 cm. broad, pinnately lobed or compound, the leaflets ovate to orbicular, 10-15 cm. long, 8-15 cm. broad, cordate, serrate to incised or lobed; petioles 2-6 dm. long, the upper cauline leaves with conspicuously dilated sheaths; peduncles 5-20 cm. long, short-pubescent but villous below the umbels; involucre of 1-6 deciduous, lanceolate or linear bracts, 2-5 mm. long; involucel of 1-6 linear-acuminate bractlets, or wanting; rays 10-30, unequal, 3-8 cm. long; pedicels 5-10 mm. long; petals white to greenishyellow, obovate; fruit orbicular to obovate, 5-11 mm. long, 6-10 mm. broad, pubescent to glabrate.
Type locality: "In Europae nemoralis," collector unknown.
Distribution: Eurasia; adventive in Nova Scotia and at New York City and Seattle.