Pilosella officinarum [Hieracium pilosella] Vaillant 1754 (Family Asteraceae)


Plant

Leaf

Flower

Fruit

Height: 5-30cm
Perennial, Stoloniferous, Lacks Persistent Seed Bank
Hermaphrodite, Flowering May - September (Earliest: 4.5)

Protective Chemicals
Saponins Amyrin
Other Triterpenoids Taraxerol
Coumarins Aesculetin, Oxycoumarin, Skimin, Umbelliferone
Flavonoids Apigenin, Isorhamnetin, Kaempferol, Luteolin
Other Phenolics Tannins
Sterols Taraxasterol

Biotopes:
Meadows
Flower Visitors:
Several Apidae

Several Syrphidae

Siphona ingerae

Siphona geniculata

Lucilia sericata

Sicus ferrugineus

Empis caudatula
Seed Dispersal: Wind
Parasites:
Golovinomyces cichoracearum

Puccinia hieracii

Cheilosia mutabilis Larva (Stem Miner)

Cheilosia urbana Larva (Root & Stem Borer)

Tephritis ruralis Larva (Flower Gall)

Ophiomyia pulicaria Larva (Leaf Miner)

Liriomyza strigata
Herbivores:
Melitaea athalia Larva

Melitaea cinxia Larva

Several Noctuidae
Sapivores:
Uroleucon cichorii

Uroleucon obscurum
Florivores:
Cryptocephalus hypochaeridis

Ecological Flora of the British Isles
Skye Flora: Mouse-ear Hawkweed


Pictures © 2003, 2004, 2005 J.K. Lindsey

Caution

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