Solanum bohsii J.D. Tovar, sp. nov. is morphologically similar to S. chlamydogynum Bitter from Venezuela of the Solanum sessile species group (Geminata clade). These two species can be distinguished by trichome morphology, as well as colour and density of the indumentum.
Description Shrubs or small trees, 2–7 m tall; stems winged, greenish-brown when young, turning brown with age, young stems pubescent with translucent simple or furcate 4–8-cellular trichomes. Sympodial units difoliate and geminate, leaves ovate to obovate, glabrous adaxially or with translucent trichomes along the mid-rib and secondary veins like those on stem, abaxially pubescent with trichomes in the mid-rib and along the secondary and tertiary veins; major leaves 18–35 (45) × 12–16 cm, with 12–15 pairs of main lateral veins, these often strongly parallel, the apex acute, base oblique and decurrent on to petiole; petioles 1–2 cm long, pubescent with translucent trichomes, like those on stem; minor leaves differing only in size, not in shape, 8–9.5 × 4–5 cm, with 6–9 pairs of main lateral veins, adaxially and abaxially pubescent along the mid-rib and main lateral veins like those on stem, the apex acute or rounded, base oblique and decurrent on to petiole; petiole 0.5.-0.7 cm long, pubescent with translucent trichomes, like those on stem. Inflorescences leaf-opposed, forked and erect, 20–50 flowered, peduncles 1.5–2.5 cm, with unbranched and uniseriate trichomes, like those on stem, pedicel scars densely spaced, not overlapping, pedicels 0.5–1 cm long, deflexed, thickened at the apex and purple in live plants. Buds globose, with the corolla strongly exserted from the calyx tube prior to anthesis. Flowers 5–6-merous, all perfect; calyx tube cyathiform, 2–3 mm long, the lobes deltoid abruptly reduced and hooded at the apex, 1.5–2 × 1.8–2.2 mm, abaxially glabrous or densely pubescent with trichomes like those of the young stem and with a tuft of hairs at apex; corolla 1.5–2 cm in diameter, white, fleshy, lobed ca. ¾ of the way to the base, the lobes 0.7–0.9 × 3–4 mm spreading or deflexed at anthesis, glabrous and cucullate at the tips; anthers 4–6 × 1.2–1.7 mm, poricidal at the tips, sagittate at the base; free portion of the filaments 0.2–1.2 mm long; ovary glabrous; style 0.5–0.7 mm long, terete, glabrous, stigma capitate, light green in live plants. Fruit a globose green berry, 1–1.2 cm in diameter, glabrescent or with a few scattered trichomes like those on stem and an apical scar, green at maturity; fruiting pedicels 1.5–2 cm long, erect, woody and somewhat rugose, distally enlarged, the calyx constricted and with lobes woody in fruit. Seeds ca. 80 per fruit, 2.5–3.5 × 2–2.5 mm, flattened-reniform, greyish when dry, the margins incrassate, the surfaces minutely pitted. Chromosome number not known.
Solanum bohsii is known only from three localities in the western slopes of the central Andean cordillera in Colombia in the Departments of Caldas, Quindio and Risaralda (Fig. 3) where it inhabits secondary forest edges between 1,900–2,300 m elevation, forming groups of up to 10 individuals.