Solanum longiconicum


Solanum longiconicum distribution Map note

Solanum longiconicum is a cloud forest species, primarily concentrated in Costa Rica, extending into Panama.  Along with S. woodsonii, this is the most southern of the North American wild potatoes.  Plants ranging from about 6 inches to 6 feet tall.  Flowers, white, blue, purple, or white with colored stripes.  Berries long and severely pointed.  Tubers small and whitish.  The specific epithet means “long cone,” referring to the berries.

Seeds of S. longiconicum have a seed spot, which distinguishes this species from the similar S. agrimoniifolium, S. oxycarpum, and S. woodsonii, all of which lack a seed spot (Spooner 2001).


Condition Type Level of Resistance Source

Glykoalkaloid content


Aerial plant of the wild potato species Solanum longiconicum
Solanum longiconicum plant


I have found this species slow and difficult to germinate using the standard conditions for S. tuberosum.

Accessions Evaluated

The following accessions were examined to prepare this profile.  I have evaluated 5/8 accessions currently available from the US potato genebank.

PI 208780

No germination.

PI 604088

An in-vitro accession from Cartago, Costa Rica.  This was the first success that I had growing this species.

PI 604092

High germination and strong seedling growth.

PI 604093

Very low germination and weak seedling growth.

PI 604095

Very low germination and weak seedling growth.


Crosses with S. tuberosum

Female Male Berry Set Seed Set Germination Ploidy Source

Crosses with other species

Female Male Berry Set Seed Set Germination Ploidy Source


Solanum longiconicum at Solanaceae Source

Solanum longiconicum at GRIN Taxonomy

Solanum longiconicum at CIP