Historische Abbildung von Blackstonia perfoliata subsp. serotina (Durchwachsener Bitterling - Late- Flowering Yellow-Wort). Das Bild zeigt Blatt, Bluete, Frucht und Same. ---- Historical Drawing of Blackstonia perfoliata subsp. serotina (Durchwachsener Bitterling - Late- Flowering Yellow-Wort).The image is showing leaf, flower, fruit and seed.