Salad Burnet
Sanguisorba minor
Salad Burnet is a perennial plant in the rose family that typically grows in calcareous nutrient-poor grasslands. It forms a basal rosette of pinnate leaves and upright stems with spherical flower heads. The flowers are unisexual or hermaphroditic, with the female flowers featuring distinctive red feathery stigmas located at the top of the head. Ecologically, it is a valuable food source for insects and is culinarily famous as a key ingredient in Frankfurt Green Sauce.
Details
Habitat function
Structure-forming element in semi-dry grasslands and an important nutritional basis in species-rich meadow biotopes.
Nutrient uptake
Low nutrient requirement; adapted to nutrient-poor (oligotrophic) sites.
Food source for
Caterpillars of the Red-underwing Skipper (Spialia sertorius), various wild bee species, and hoverflies.
Human use
Use of fresh leaves as a culinary herb (salads, sauces) and in folk medicine as a tannin-rich drug for inflammation.
Ecology
Ecological role
Important source of nectar and pollen for wild bees and hoverflies; exclusive host plant for the caterpillars of some specialized butterfly species.
Natural predators
Grazing livestock, various insect larvae, and snails.
Competitor species
Highly competitive grasses and tall forbs in cases of increasing eutrophication of the site.
Ecosystem service
Soil stabilization on dry slopes, providing food for pollinators, use as a food source and medicinal plant.
Threats
Agricultural intensification (fertilization), abandonment of grazing (scrub encroachment), and conversion of grassland to arable land.
Scientific profile
Profile
Reproduction
Predominantly generative via seeds; vegetative reproduction via branching of the rhizome is possible to a small extent.
Protection & threats
Main threats
Eutrophication through atmospheric nitrogen deposition, abandonment of land use (scrub encroachment), and conversion of grassland to arable land.