The plant family Solanaceae is large and diverse from the nightshades, through tomatoes, potatoes and peppers to daturas and Solanum there is a detailed explanation of these species on hvanbalken.com

Gardeners Solanum Tips

• The Chilean potato vine Solanum Crispum is just the  vigorous climber to give your sunny wall an exotic look.
• It has wiry stems which need tying up to wires or trellis for support. Prune and tie in to retain the required shape.
• The small semi-evergreen leaves  remain on the plant in all but bad winters and easily reach 6 feet tall.
• The potato-like flowers with lilac petals around a pointed yellow centre, appear continuously from mid-summer to mid-autumn. The variety ‘Glasnevin’ is the one to choose, as it flowers more prolifically and is also slightly hardier.
• They are pest and disease free once established.
• Plants like a moist but well-drained soil that is neutral to slightly alakaline in pH.
• To propagate take cuttings from summer to early autumn. If buying from a garden centre buy when in bloom as some varieties have disappointing blossom

Solanum  jasminoides Laxum album is a clear white variety of this twining climber. Other Solanum varieties in nthe family include

Solanum aethiopicum, Solanum crispum, Solanum dulcamara, Solanum elaeagnifolium, Solanum jasminoides, Solanum laciniatum, Solanum laxum, Solanum lycopersicum, Solanum macrocarpon, Solanum mammosum, Solanum melongena, Solanum muricatum, Solanum nigrum, Solanum pseudocapsicum, Solanum quitoense, Solanum rantonnetii, Solanum torvum and Solanum tuberosum your humble potato.