Solanum stenophyllidium


Solanum stenophyllidium is a Mexican species, ranging from central Mexico north almost to the US border.  Highly variable in size and form.  Plants range about 9 to 27 inches tall.  Long, thin leaves, similar to many of the Mexican dryland species.

The specific epithet, stenophyllidium, refers to the narrow leaflets of this species.  It is formed from the Greek words “steno,” for “narrow,” and “phyllon,” for “leaf.”  While there is no completely standardized pronunciation for scientific names, the most common way to pronounce this species is probably so-LAY-num stee-no-fil-ID-ee-um.

This species can survive frosts down to 26 degrees F (-3.5 C) (Li 1977).  Vega (1995) found that this species (as S. brachyostrichum) is less frost tolerant than domesticated potato.

Condition Type Level of Resistance Source
Alternaria solani (Early Blight) Fungus Somewhat resistant Jansky 2008
Frost Abiotic Somewhat resistant Machida-Hirano 2015 (as S. brachistotrichum)
Globodera pallida (Pale Cyst Nematode) Invertebrate Not resistant Bachmann-Pfabe 2019
Meloidogyne chitwoodi (Columbia Root Knot Nematode) Invertebrate Somewhat resistant Graebner 2018b
Phytophthora infestans (Late Blight) Fungus Somewhat resistant Bachmann-Pfabe 2019
Potato Virus Y (PVY) Virus Not resistant Cai 2011
Pectobacterium carotovorum (Blackleg/Soft Rot) Bacteria Not resistant Chung 2011

Glykoalkaloid content


Seedlings of the wild potato species Solanum stenophyllidium
Solanum stenophyllidium seedlings
Tubers of the wild potato species Solanum stenophyllidium
Solanum stenophyllidium tubers


Bamberg (2017) found a 56% increase in seed set in this species with supplemental applications of liquid fertilizer at four and seven weeks after potting.

Towill (1983) found that seeds of this species stored at 1 to 3 degrees C germinated at 40% after 8 years.

Trapero-Mozos (2018) determined that this species will tolerate a temperature of 40 C even without prior acclimatization to warm temperatures.


Crosses with S. tuberosum

Female Male Berry Set
Seed Set Ploidy Germ Source
S. tuberosum S. stenophyllidium (as S. brachistotrichum) None  None Jackson (1999)
S. stenophyllidium (as S. brachistotrichum) S. tuberosum None None Jackson (1999)

Crosses with other species

Watanabe (1991) found that 25% (although only 2 plants) of varieties of this species (as S. brachistotrichum) produced 2n pollen and Jackson (1999) found 7-13%, which would be effectively tetraploid and 2EBN.

Female Male Berry Set
Seed Set Ploidy Germ Source


Solanum stenophyllidium at Solanaceae Source

Solanum stenophyllidium at GRIN Taxonomy