Cow parsley illustration in pencil with details of stem, leaves and flowering head picked out in watercolour, and with a small view of the plant grwing at a distance, close up study of the individual flower and its anatomy
Giant hogweed Heracleum mantegazzianum study giving an impression of the enormous size of this tall umbellifer plant with its thick stems and froth of white flowers; details of individual flowers and seeds in colour, and one leaf illustrated in full colour
