Capsicum geminifolium

Capsicum geminifolium is a wild Andean species based on Ecuadorian material collected in the nineteenth century, with the lectotype traced to Monte Corazón in Pichincha from September 1873. It was first published as Acnistus geminifolius in 1905 and later transferred to Capsicum in 1956. Current monographic treatments place it across north-western South America, from Colombia and Ecuador into central Peru, in montane wet forest habitats, generally around 1500 to 3500 m elevation.

The plant is a shrub, documented as about 1 m tall in Ecuadorian cloud-forest inventory work, though field and comparative sources also describe it as bushy to scrambling. It has thin stems and markedly anisophyllous paired leaves, with one leaf in the pair noticeably larger than the other. The leaves are simple and membranous, dark green on the upper surface, and the stems and leaves are described as moderately to densely pubescent in modern comparative treatments.

Its flowers are borne on pendent, non-geniculate pedicels that become slightly winged and then conspicuously winged in fruit. The calyx carries long subulate appendages, usually about 3 to 6.5 mm long, and the corolla is about 7 to 12 mm long, sometimes reaching 15 mm, typically yellow to ochre and often marked with purple spotting. This combination of strongly unequal paired leaves, long calyx appendages, winged fruiting pedicels, and spotted yellow corollas is central to the species' identity.

The fruit are small, round, and pendent, commonly about 6 to 8 mm across, maturing from dark green to orange-red or red. They are treated in the modern literature as non-pungent, with smooth flesh and blackish-brown to black seeds. A major published taxonomic conflict exists over whether some material should be kept separate as Capsicum scolnikianum, but current major references and recent monographic work place that name in synonymy under Capsicum geminifolium.