Twining herb or shrub, hairy stems, 3-lobed hairy leaves, pubescent leaflets, axillary hairy or glabrescent inflorescence of scented bright purple or blue flowers with yellow spot in centre of standard, hairy calyx to 12mm long, petals to 20mm long x 18mm, fruit 100mm x 10mm with yellow hairs, root tubers to 600mm long
Known weed
Chemical products, fibre, food & drink, forage, medicinal