S. andigenum Juz. et Buk. var. aymaranum Buk. et Lechn. f. basiscopum Buk. et Lechn.

S.M. Bukasov. Potatoes of South America and their breeding use, Leningrad, 1933, p. 69.

Diagnosis: Has got characters common with v. aymaranum and f. incrassatum, assuming the proposition about it origin as a hybrid of these forms.
Pedicle length above articulation is big, about 25 mm, above articulation it is small, about 6 mm.
Corolla radius is 23 mm, length of petal is 11 mm, acumen 5 mm. Berries are oval, numerous.
Similarity to v. aymaranum: nature of pedicle and calyx, color of corolla and star, apparently, short pubescence of acumens, arcuate and chinked anther column, small stigma.
Difference from v. aymaranum: nature of leaf clearly basiscopic, sometimes up to the second pair of primary leaflets (half-basiscopic), acroscopic up to 3 pairs. Pubescence is slightly longer, especially on pedicle and calyx, and also on the corolla. Anthers are big, 7,5 mm long.
bolivianum and incrassatum are similar in leaf, position of pedicle articulation (like by incrassatum), size (of the flower?).
Differences from incrassatum: shorter corolla petals, arcuate anthers.
Differences from v. longibaccatum: size of corolla and petal and shape of anthers column.
Juz. 1740, La Paz under name Surimana. Not to mix with S. chaucha.