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iNat·126575SpeciesPlantae30,075 field observations
  1. Plants
  2. ›Vascular Plants
  3. ›flowering plants
  4. ›Dicots
  5. ›Sunflowers, Bellflowers, Fanflowers, and Allies
  6. ›Sunflowers, Daisies, Asters, and Allies
  7. ›Thistles and Allies
  8. ›Cardueae
  9. ›Knapweeds and Allies
  10. ›Centaurea
  11. ›Centaurea
  12. ›Phrygia
black knapweed
Plate 1 of 4. (c) Christina Taylor, some rights reserved (CC BY-NC), uploaded by Christina Taylor · via iNaturalist

black knapweed

Centaurea nigra

Centaurea nigra is a species of flowering plant in the daisy family known by the common names lesser knapweed, common knapweed and black knapweed. A local vernacular name is hardheads.

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Where it lives

Recorded sightings

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geo-referenced records in GBIF, from museums, herbaria and field observers.

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In the old herbals & bestiaries

black knapweed in Six Groups of the History of Plants

Six Groups of the History of Plants

Rembert Dodoens · 1583 · p.144

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In the stacks

Searching the stacks…

Every page naming Centaurea nigra in the Biodiversity Heritage Library →

This page is assembled live from iNaturalist, GBIF, Wikipedia, the Source Library and the Internet Archive. It is not yet part of the hand-edited codex. iNaturalist taxon 126575.