Solanum angustifidum Bitter

Erect or lax, scandent shrubs, 1–2 m. Stems erect, glabrous; new growth glabrous. Bark of older stems reddish brown to grey. Sympodial units plurifoliate, not geminate. Leaves deeply pinnatifid (pinnate) with 1–4 pairs of leaflets, 2–6.5 cm long, 2–4 cm wide, elliptic in outline, membranous, both surfaces glabrous; primary veins 4–6 pairs; base attenuate onto the petiole; margins deeply pinnatifid, the leaflets (0.5-)2–2.5 long, 0.3–0.4 cm wide at their widest point; apex rounded; petioles 0.5–1.5 cm long, glabrous, sometimes twining. Inflorescences terminal or occasionally lateral, 2–6 cm long, several times branched, with 20–50 flowers, glabrous but with a few simple uniseriate trichomes at the point of pedicel insertion; peduncle 1–3 cm; pedicels 0.7–1(-1.7) cm long, slender, ca. 0.5 mm in diameter at base and apex, glabrous, spreading at anthesis, articulated at the base in a short sleeve, leaving a tiny peg on the inflorescence axis; pedicel scars irregularly spaces 1–4 mm apart. Buds ellipsoid, the corolla exserted from the calyx tube before anthesis. Flowers all perfect, 5-merous. Calyx tube 1–1.5 mm long, cup-shaped, the lobes 0.5–1 mm long, deltate, glabrous or minutely papillate at the tips. Corolla 1.6–2 cm in diameter, lilac, purple or occasionally white, stellate to deeply stellate, lobed 2/3 to 3/4 of the way to the base, the lobes 6–9 mm long, 3–4 mm wide, spreading at anthesis, densely papillate on the margins and midvein abaxially, glabrous adaxially. Filament tube minute, the free portion of the filaments variable, with one filament longer than the rest 2–2.5 mm long, the other four 1–1.5 mm long, all glabrous; anthers 5–6 mm long, 1–1.5 mm wide, ellipsoid, yellow, poricidal at the tips, the pores opening to slits with age. Ovary glabrous; style 9–11 mm long, glabrous; stigma capitate, minutely papillose. Fruit a globose berry, 0.7–1 cm in diameter, black or violet-black when ripe, the pericarp thin and shiny, glabrous; fruiting pedicels 1–1.5 cm long, ca. 1.5 mm in diameter at the base, woody, pendent; fruiting calyx tightly investing the lower portion of the berry and slightly accrescent. Seeds 10–20 per berry, ca. 3 mm long, 2.5 mm wide, flattened reniform, pale brown, the surfaces minutely pitted, the testal cells square or circular. Chromosome number: not known.

(Figure 17). Central and northern Argentina, with a few collections from Bolivia; 45–2000 m. Often cultivated (see Figure 1) and found escaped; Bolivian specimens are thought to be escapes from cultivation (Morton 1976).

Solanum angustifidum là loài thực vật có hoa trong họ Cà. Loài này được Bitter miêu tả khoa học đầu tiên năm 1913.