The White Rose is a waxy potato used for boiling and frying.

The potato is a member of the nightshade family (Solanaceae) and originated in the Peruvian and Bolivian Andes of South America. Related plants in the nightshade family include peppers, eggplants and tomatoes, and weeds like hairy nightshade and black nightshade. The same potato species as the one we cultivate today (Solanum tuberosum) and related species were gathered and cultivated for thousands of years before the European explorations. Potatoes were taken first to Spain around 1570 and about 20 years later to England. They first reached North America from England in the early 1600s. Potato production spread from these two early European introductions and they are now grown in nearly every part of the world. 

During the early period of cultivation in Europe, North America and elsewhere, potatoes were grown decade after decade from original selections and no new cultivars were introduced. Following the Irish potato blight in the 1840s, crossing was increased in North America and many new cultivars were selected in the last half of that century. From this early breeding work the forerunners of modern potato varieties were developed. 

Common cultivars of 25 to 100 years ago included: Early Rose, Green Mountain, Irish Cobbler, White Rose, Early Ohio, Burbank and Red McLure. Russet Burbank was selected over 100 years ago and still remains one of the most widely grown varieties in North America. Records from Manitoba show that Irish Cobbler, Gold Coin,
Netted Gem (Russet Burbank) and Early Ohio were recommended varieties in 1926. 

http://www.idahopotato.com/index.html
and some intriguing recipes:
http://www.virtualcities.com/ons/co/e/coe88011.htm