Solanum stenophyllum Humb. & Bonpl. ex Dun.

Shrubs or small trees, 1–6 m tall. Stems and leaves densely pubescent with golden yellow tree-like trichomes; leaf scars prominently raised, the stem strongly winged between the nodes; new growth densely pubescent with golden-yellow dendritic and tree-like trichomes. Bark of older stems dark brown, somewhat pubescent. Sympodial units plurifoliate, branching usually dichasial, sometimes monochasial. Leaves simple, 5–9 cm long, 1.1–3 cm wide, narrowly elliptic, the upper surfaces drying black, shiny, sparsely puberulent along the veins with golden dendritic or tree-like trichomes, the lower surfaces densely pubescent with short, matted, golden dendritic and tree-like trichomes, the mesophyll usually not visible, these drying golden, occasional sparser or rarely completely absent; primary veins ca. 11 pairs, these impressed above; base attenuate, winged onto the petiole and then onto the stem; margins entire; apex acute or rounded; petiole 2–5 mm long, strongly winged on to the stem and not clearly differentiated from the leaf base. Inflorescences terminal, sometimes appearing lateral from shoot overtopping, often in the fork of the new branches, 2.5–4 cm long, branching 5–7 times, with 8–10 flowers, pyramidal, the axis densely pubescent with golden dendritic and tree-like trichomes; peduncle 1–2 cm long; pedicels 0.6–1.2 cm long, tapering from a basal diameter of 0.5 mm to an apical diameter of ca. 1 mm, nodding at anthesis, densely pubescent with matted, golden dendritic and tree-like trichomes, articulated at the base and inserted in a sleeve ca. 1 mm long; pedicel scars closely spaced and clustered near the inflorescence branch tips. Buds ellipsoid, the corolla strongly exserted from the calyx tube. Flowers all perfect, 4–5-merous. Calyx tube 2–5 mm long, conical, the lobes 1.5–3 mm long, deltate to long-triangular, densely pubescent abaxially with matted dendritic and tree-like trichomes, densely pubescent adaxially with golden dendritic trichomes. Corolla 2–2.4 cm in diameter, violet or occasionally white (Ecuador), lobed 1/2 to 3/4 of the way to the base, the lobes 8–14 mm long, 7–9 mm wide, planar at anthesis, densely pubescent abaxially with golden dendritic trichomes, these denser at the tips of the lobes, adaxially glabrous. Filament tube less than 0.5 mm long; free portion of the filaments 1.5–2 mm long, glabrous; anthers 3.5–4 mm long, 1–1.5 mm wide, loosely connivent, poricidal at the tips, the pores becoming slit-like with age. Ovary globose, glabrous; style 7–9 mm long, glabrous or finely pubescent near the base in a few Ecuadorian specimens; stigma bilobed, the surface minutely papillose. Fruit a globose berry, 1–1.4 cm in diameter, purplish black with thin pericarp; fruiting pedicels 0.8–1.2 cm long, woody, deflexed or nodding. Seeds ca. 15 per fruit, ca. 3 mm long, ca. 3 mm wide, reddish-brown, flattened lenticular or roundish in outline, the surfaces minutely pitted. Chromosome number: not known.

(Figure 94). Andes from northern Colombia to southern Ecuador and northern Peru, from 2500–3300 m.

Solanum stenophyllum là loài thực vật có hoa trong họ Cà. Loài này được Dunal miêu tả khoa học đầu tiên năm 1816.