Hawkweed Oxtongue

Plant / resting place / on
adult of Cryptocephalus hypochaeridis may be found on Picris hieracioides
Remarks: season: 4-9

In Great Britain and/or Ireland:
Foodplant / internal feeder
larva of Ensina sonchi feeds within capitulum of Picris hieracioides

Foodplant / parasite
Golovinomyces cichoracearum parasitises live Picris hieracioides

Foodplant / spot causer
amphigenous colony of Ramularia hyphomycetous anamorph of Mycosphaerella hieracii causes spots on live leaf of Picris hieracioides

Foodplant / false gall
larva of Noeeta pupillata causes swelling of capitulum of Picris hieracioides

Foodplant / parasite
uredium of Puccinia hieracii var. hieracii parasitises live leaf of Picris hieracioides
Other: minor host/prey

Foodplant / internal feeder
larva of Trupanea amoena feeds within capitulum of Picris hieracioides
Remarks: Other: uncertain

Foodplant / internal feeder
larva of Trupanea stellata feeds within capitulum of Picris hieracioides
Remarks: Other: uncertain

In Alaska, Picris hieracioides is known only from the Aleutian Islands, where it may be native. This species is evidently no longer present in British Columbia.

Biennials or perennials. Leaf blades 50–150(–300) × 10–25(–50+) mm. Involucres 8–15 × 10–16+ mm, larger in fruit. Phyllaries proximally ± flat, not each enfolding its subtended floret, usually bristly and/or tomentulose abaxially. Cypselae 3–4(–6) mm; pappi 5–7 mm. 2n = 10.

Picris hieracioides var. alpina Koidzumi; P. hieracioides subsp. kamtschatica (Ledebour) Hultén

Picris hieracioides, or hawkweed oxtongue, is a species of flowering plant in the family Asteraceae.