THIS IS A DRAFT
The species account below is an early version, drafted around 2003. It has been provided here to aid understanding, but please be aware it may not fully tally with the up-to-date map and statistics shown below.
Brassica napus
Rape
Species Details
Rape is an occasional established annual or biennial of waysides, field margins, abandoned cultivations and waste ground that is found throughout our area except for the northern moors. Two subspecies occur, subspecies XXoleifera (Oil-seed Rape) and subspecies XXrapifera (Swede). The former is familiar as the crop plant that turns numerous fields bright yellow in spring. It escapes freely and frequently from here onto roadsides and waste ground. The latter is more rarely grown and is usually found wild as a relic of cultivation. The species is unknown in the wild being of cultivated origin.