Umbellate Andean Berry (Jaltomata umbellata)

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Plant palette

Jaltomata umbellata: Morphology, Loma Habitat, and Botanical Profile

Jaltomata umbellata is a compact shrub reaching up to one meter in height that inhabits the coastal fog deserts (known locally as lomas) of the Lima Department in Peru at elevations between 300 and 500 meters. Its specific epithet umbellata refers to its umbrella-like clusters of four to nine flowers, which feature cream or pale green flaring rims and tubes filled with red nectar.

A member of the nightshade family (Solanaceae), the plant was first described in 1799 by Hipólito Ruiz López and José Antonio Pavón as Atropa umbellata in their monumental work Flora Peruviana, et Chilensis. In 1993, botanists Thomas Mione and Michael Nee transferred the species to 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 umbellata (Umbellate Andean Berry)

Morphology

Stems, trichomes, and leaves

Jaltomata umbellata forms a branched shrub up to 1 meter tall with young shoots and outer calyx surfaces covered in a dual layer of trichomes—both straight glandular hairs that secrete sticky compounds and shorter, branched non-glandular hairs. The leaf blades are ovate with a pointed apex and smooth, entire margins, measuring up to 11 cm long and 8 cm wide.

Inflorescences and floral structure

The flowers are borne in umbel-like clusters of four to nine blooms supported by a main peduncle (inflorescence stalk) 4.5 to 11 mm long and densely glandular individual flower stalks (pedicels) measuring 6 to 9 mm. Each blossom displays a specialized architecture:

The corolla consists of a tube 6.5 to 8 mm long that holds red nectar, flaring out into a rotate to bell-shaped cream or pale green limb 14 to 23 mm across that remains open through the night.
Five stamens measuring 9.2 to 10.9 mm project up to 7 mm beyond the corolla opening, with their lower filaments bearing simple hairs and topped by anthers that contract from about 2 mm to 1.2 mm after releasing pollen.
The slender style reaches 8 to 13.3 mm in length, positioning the stigma up to 8 mm past the stamens, while each carpel inside the ovary houses 70 to 78 ovules.

Fruits and seeds

Following pollination, the flower develops into a spherical orange berry enclosed at the base by an accrescent calyx whose radius expands to 6–8 mm as the fruit matures. Inside the pulp lie numerous small seeds measuring 1.36 to 1.48 mm across.

Applications

Jaltomata umbellata is cultivated in specialized botanical collections and academic research facilities studying the evolutionary biology of South American Solanaceae. Its ripe orange berries are also sporadically eaten fresh by locals visiting the seasonal lomas formations of coastal Peru.

Interesting facts

Survival engineering in the Peruvian fog desert

Jaltomata umbellata thrives in the coastal lomas of Lima—isolated islands of vegetation surrounded by hyper-arid desert that receive almost no rainfall and depend entirely on dense winter ocean fog (garúa). To survive in this narrow elevational belt between 300 and 500 meters, the shrub coordinates its surface vestiture, floral timing, and reproductive geometry into a unified survival system.

Every microscopic and macroscopic detail of the plant works in concert to harvest moisture, deter herbivores, and guarantee cross-pollination during brief windows of coastal bloom:

The young stems, flower stalks, and outer calyx wear a double coat of straight glandular trichomes and shorter branched hairs, which trap drifting fog droplets while creating a sticky barrier against sap-feeding insects.
Unlike relatives that close their petals at dusk, the pale cream corolla limb stays open throughout the night and projects its stigma up to 8 mm beyond the anthers—a precise spatial separation (herkogamy) that prevents self-fertilization and ensures visiting pollinators touch the receptive stigma before reaching the red nectar inside the tube.

Geography of distribution

Peru

Sources

Technical Information

Taxon Synonyms: Witheringia villosa, Kokabus umbellatus, Saracha villosa, Saracha zuccagniana, Atropa villosa, Atropa revoluta, Saracha lobata, Witheringia zuccagniana, Hebecladus turneri, Atropa rothii

External Databases: GBIF, POWO, Tropicos

Umbellate Andean Berry (Jaltomata umbellata)