Umbellate Hawkweed
Hieracium umbellatum
Umbellate hawkweed is a perennial herbaceous plant that grows up to 100 cm tall. Unlike many related species, it lacks a basal leaf rosette at flowering time, instead featuring numerous narrow stem leaves. The yellow flower heads are arranged in a terminal, umbel-like inflorescence. The species prefers sandy, acidic soils and inhabits open woodlands, heaths, and coastal dunes.
Details
Habitat function
Soil stabilization on sandy substrates and food source for insects.
Nutrient uptake
Low; adapted to nutrient-poor conditions.
Food source for
Wild bees, hoverflies, butterflies (e.g., various geometrid moths).
Human use
Occasionally used as an ornamental plant for rock gardens or naturalistic landscaping.
Ecology
Ecological role
Important source of nectar and pollen for specialized wild bees, hoverflies, and butterflies; also serves as a host plant for larvae.
Ecosystem service
Pollinator support in nutrient-poor ecosystems.
Threats
Eutrophication (nitrogen input) of soils and displacement by scrub encroachment or more intensive land use.
Scientific profile
Profile
Reproduction
Mainly generative via seeds; vegetative via renewal buds on the rhizome.