Toothed Andean Berry (Jaltomata dentata)

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Plant palette

Jaltomata dentata: High-Andean shrub, morphology and habitat

Jaltomata dentata is a branched, woody shrub native to the high mountain slopes and rocky ravines of the Peruvian and Bolivian Andes. Its specific epithet dentata means "toothed" in Latin, pointing directly to the jagged, sinuate-dentate margins of its leaves, while its branches bear nodding bell-shaped flowers and bright orange berries.

This species belongs to the nightshade family (Solanaceae) and was first described in 1799 by the Spanish botanists Hipólito Ruiz López and José Antonio Pavón as Saracha dentata. In 1976, the Venezuelan botanist Carmen Benítez de Rojas transferred the species to its current placement in the genus Jaltomata.

Taxonomy

∟ царство Plantae
∟ division Tracheophytes (Vascular Plants)
∟ subdivision Spermatophytes (Seed plants)
∟ Angiosperms
∟ mesangiosperms (Core angiosperms)
∟ eudicots
∟ core eudicots
∟ asterids
∟ order Solanales
∟ family Solanaceae
∟ genus Jaltomata
∟ species Jaltomata dentata (Toothed Andean Berry)

Morphology

Stems and foliage

Growing up to 1–2.5 meters tall, this perennial shrub develops woody, terete stems covered in a fine coat of glandular and simple hairs (trichomes). The young shoots often display a slight purplish tint and sticky texture that helps trap small insects and reduce moisture loss in windy mountain habitats.

Leaf blades: The alternate leaves are ovate to elliptic, featuring markedly toothed or sinuate-dentate margins that give the species its scientific name.
Surface texture: Both leaf surfaces bear sparse to moderate pubescence along the veins, supported by short petioles that hold the blades toward the high-altitude sun.

Flowers and fruits

The inflorescences arise as small umbel-like clusters of 2 to 5 nodding flowers on slender peduncles. Each flower shows a tubular-campanulate to broadly flared corolla (the fused ring of petals) that is pale greenish-yellow to creamy white, often accented by a violet or purplish ring inside the throat.

Stamens and style: Five stamens with yellow anthers surround a slender style, while the base of the flower secretes bright orange-red nectar droplets between the filaments.
Ripe berries: After pollination, the green calyx (outer cup of sepals) expands slightly like a saucer around a smooth, spherical berry that ripens to a vivid orange hue and holds numerous tiny, lens-shaped seeds.

Flowering season

Flowers primarily during the Andean rainy and transitional seasons from December to May.

Jan

Feb

Mar

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May

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Jul

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Sep

Oct

Name

Dec

Applications

In rural Andean communities of Peru, the fully ripe orange berries are occasionally gathered from the wild by local inhabitants and shepherds as a sweet, refreshing trail snack. Outside its native mountain valleys, the plant is maintained in specialized botanical gardens and university research collections to study floral evolution and breeding systems within the family Solanaceae.

Interesting facts

Visual nectar signals at high altitude

Unlike the vast majority of flowering plants that produce clear, colorless nectar hidden deep inside the blossom, Jaltomata dentata secretes conspicuous droplets of yellow-orange to reddish nectar at the base of its pale corolla. Against the greenish-cream background of the petals, these colored droplets act as an honest visual gauge, allowing high-altitude bees and hummingbirds to see from a distance whether a flower holds a fresh energy reward before expending effort in the thin, chilly mountain air.

Timed floral phases

To prevent automatic self-fertilization, the flowers operate on a coordinated two-stage schedule known as protogyny—the maturation of female organs before male ones.

Pistillate phase: When the bud first opens, the stigma is already receptive to incoming pollen from neighboring shrubs, while the five anthers remain tightly closed.
Staminate phase: Only on the following day do the filaments elongate and the anthers split open to release their dusty yellow pollen, ensuring that cross-pollination gets the first opportunity in the harsh Andean climate.

Geography of distribution

Peru
Bolivia

Sources

Technical Information

Taxon Synonyms: Bellinia dentata, Saracha sordideviolacea, Saracha dentata, Witheringia dentata, Atropa dentata

External Databases: GBIF, POWO, Tropicos