Common name:
Yellow-wort
Family:
Scientific name:
Blackstonia perfoliata
Main flower color:
Range:
Scattered areas of England and Wales
Height:
Up to 40 cm
Habitat:
Calcareous grassland, sand dunes
Flowers:
Forked, flat-topped clusters. Flowers, up to 15 mm in diameter, have between six and nine yellow lobes and the same number of stamens. The calyx is deeply divided into long, linear lobes, twisted in bud. Flowers tend to open fully only in bright sunshine
Leaves:
Basal leaves are obovate, in a rosette, while stem leaves are perfoliate; fused pairs, pointed and often upturned at the tip. All are hairless, grey-green, with a waxy surface
Season:
June to October
Rarity:
★★★★★
