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Leaf Flowers Plant
Sprout Tuber Sliced tuber


  • Origin & Breeding: bred by the USDA from the cross (Katahdin x Chippewa) and selected by Presque Isle Station, Maine, in 1932.
  • Year registered in Canada: 1940
  • Registration number: 318
  • Maturity: late to very late

Botanical Features

  • Plants: large, erect to spreading; stems thick, prominently angled; internodes reddish purple; wings prominent.
  • Leaves: open, medium long, broad.
    Primary leaflets: large, broadly ovate; three pairs.
    Secondary leaflets: medium in number.
    Tertiary leaflets: few.
  • Flowers: lilac to reddish purple; green buds; blooms all season until vine desiccation.
  • Tubers: elliptical to round-elliptical, medium thick; smooth ivory yellow skin; shallow eyes; white flesh.
  • Sprouts: grayish purple.

Agricultural Features

High yielding variety; fair to good storage quality; short dormancy period; sets few tubers if plants closely spaced. Medium specific gravity.

  • Utilization: fair to good for boiling, baking, chipping and french frying, depending on maturity.
  • Chief Market: fresh market, chipping, mainly for exportation.

Reaction to Diseases

Resistant: wart disease, yellow dwarf.
Highly resistant: PVA.
Moderately resistant: common scab, fusarium dry rot (Fusarium coeruleum), late blight, early blight, tuber net necrosis, verticillium wilt, PVY.
Susceptible: leaf roll, phoma rot, PVX.
Highly susceptible: blackleg, fusarium dry rot (F. sambucinum).

References: 1, 6.

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