This page is a draft, part of our ongoing wild potato project. I’ll probably be adding information to the species pages through 2020 at least, but I’m making them public since they may be useful even incomplete.

Solanum laxissimum

Common Name(s): Papa de monte

Synonyms: S. claviforme, S. neovargasii, S. parvicorollatum, S. rockefelleri, S. santolallae

Series: Conicibaccata

EBN: 2

Ploidy: Diploid

Segregation: Disomic

Self-compatible: No

Cytoplasm Type:


A Peruvian species growing in eastern Andean forests.  Plants three to twelve feet tall.  Tubers five to six inches long.  Flowers light to dark purple.  Berries conical, more than an inch long.

Ochoa (2004) mentions that the berries are called shaullinco, but doesn’t discuss why they have a name.  If they are named, presumably they have some use.

Condition Level of Resistance Source

Glykoalkaloid content


I have found seeds of this species easy to germinate using the standard conditions for S. tuberosum.


Crosses with S. tuberosum

Watanabe (1991) found no varieties of this species that produced 2n pollen.

Female Male Berry Set Seed Set Germination Ploidy Source
S. tuberosum S. laxissimum None None     Jackson (1999)
S. laxissimum S. tuberosum None None     Jackson (1999)

Crosses with other species

Jackson (1999) found 5% 2n pollen for varieties of this species.

Female Male Berry Set Seed Set Germination Ploidy Source



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