EditorialGiant knapweed or large-headed yellow centaury, Centaurea macrocephala. Handcoloured copperplate engraving by F. Sansom Jr. after an illustration by Sydenham Edwards from William Curtis' Botanical Magazine, T. Curtis, London, 1809.
EditorialGreater knapweed, Centaurea scabiosa. Handcoloured copperplate engraving after an illustration by James Sowerby from James Smith's English Botany, London, 1792.
EditorialGiant knapweed or large-headed yellow centaury, Centaurea macrocephala. Handcoloured copperplate engraving by F. Sansom Jr. after an illustration by Sydenham Edwards from William Curtis' Botanical Magazine, T. Curtis, London, 1809.
EditorialGreater knapweed, Centaurea scabiosa. Handcoloured copperplate engraving after an illustration by James Sowerby from James Smith's English Botany, London, 1792.