Solanum huaylasense is a species of plant (wild tomato) in the family Solanaceae. It is endemic to Peru.[1]
It is a sprawling perennial herb, woody at the base, the herb being up to 1m (03feet) or more in diameter and up to 1m tall. Its stem diameter ranges between 7mm10mm at the base, not hollow in age, green, minutely puberulent with simple, uniseriate, stiff 1–2-celled trichomes. Sympodial units are 2-foliate (sometimes 3-foliate); internodes between 2cmand6cmcm (01inchesand02inchescm). Its leaves are interrupted imparipinnate, bright green, minutely pubescent with stiff simple uniseriate trichomes like those of the stems.
The petiole is between 1cmand4cmcm (00inchesand02inchescm); pseudostipules present or absent, if present then present on most nodes. Inflorescences range between 12cmand30cmcm (05inchesand10inchescm) in size, with 8–30 flowers, ebracteate or bracteate on most nodes from the base. Peduncle is between 5cmand15cmcm (02inchesand06inchescm); pedicels are between 0.8cmand1.6cmcm (00.3inchesand00.6inchescm), articulated in the upper half. Flowers with the calyx tube are minute, approximately between 0.5mm1mm. Fruit is between 1cmand1.4cmcm (00inchesand00.6inchescm) in diameter, globose and green when ripe. Seeds are obovate, narrowly winged at the apex and acute at the base, pale brown, pubescent with hair-like outgrowths of the integument cell radial walls, which give the surface a silky appearance. Chromosome number: n=12 .
On rocky slopes in the Department of Ancash, Peru at an altitude between 940mand3000mm (3,080feetand10,000feetm).