Deprea subtriflora is a softly branching shrub or woody herb that inhabits moist montane slopes and lowland forest margins from the Peruvian Andes into Bolivia and the state of Acre in northern Brazil. Its species name subtriflora translates from Latin as "nearly three-flowered," a direct observation of its quiet, understated habit of producing just one to three nodding blossoms at each leaf node.
A member of the nightshade family (Solanaceae), the species was first collected during the late eighteenth-century royal botanical expedition to Peru and published in 1799 by Spanish botanists Hipólito Ruiz López and José Antonio Pavón as Physalis subtriflora. For nearly two centuries it was shuffled between genera such as Witheringia and Larnax until William Gerald D'Arcy placed it in its modern accepted home as Deprea subtriflora in 1993.
Growing as a slender shrub in humid forest clearings and along stream banks, Deprea subtriflora develops terete, slightly zigzagging branches clothed in fine, multicellular hairs. Its alternate leaves are borne on slender stalks (petioles) and often display subtle asymmetry at the base where the blade meets the stem.
True to its name, the inflorescence consists of a reduced axillary cluster bearing only one to three flowers on slender, drooping pedicels. Each flower has a small, cup-shaped calyx withfive triangular teeth and a pale yellowish-green to cream corolla divided into reflexed lobes.
While open-country relatives often invest energy into large, showy floral displays, Deprea subtriflora takes a conservative approach suited to the filtered light of Peruvian and western Amazonian forest edges. By limiting each leaf axil to just one to three blossoms—the trait captured in the epithet subtriflora—the plant avoids exhausting its carbohydrate reserves and can steadily mature almost every pollinated ovary into a viable seed-bearing berry.
Once fertilization takes place, the small green calyx begins a coordinated second phase of growth driven by cell expansion along its five main vascular ribs. Instead of remaining a tight cup, it balloons outward into a lightweight, protective chamber around the ripening fruit.
Taxon Synonyms: Physalis subtriflora, Athenaea subtriflora, Larnax subtriflora, Withania subtriflora
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