S. tuberosum L. var. brevipilosum Buk. et Lechn.


S.Ě. Bukasov. Potatoes of South America and their breeding use, Leningrad, 1933, p. 88

Diagnosis: Tubers are flat-oval, smooth, pink under the skin, with small irregular purple spots. Corolla lobes are not sloping, style is relatively thicker, 650 micr., papillae are 30-60 micr. Filaments are 1200-1350 micr. thick. Corolla radius is 16 mm, lobe 8 mm, acumen 3 mm. Glossy leaves. Susceptible to late blight. This is apparently an early form, which is indicated by the name - "Siete semanas", which means in Spanish “seven-weeks-long”.
Affinity with elongatum in colored articulation, extended upper part of the pedicel, shape of the anther column.
Distinctions from elongatum: very short pubescence of pedicels, calyx and acumens from the bottom, cymmetric calyx, typical, narrow, with a light star, stamen filaments are long, up to 3,5 mm, anthers are 6 mm. long, strongly displaced, but the column is not the type of europaeum. Styles are shorter, 10 mm.
Characters of Guapa are present (hybrid?): short pubescence, shape of calyx et al.
By Castro and Yutuy under the name Siete semanas, Caballera, Guapa chilena, Pedan, Maude. Juz. 2008, 2010, 2011.