Plants perennial, succulent, green or reddish tinged, 30-70 cm tall, simple or branched, glabrous or rarely slightly pubescent at shoot apices. Leaves alternate; petiole 1.5-6 cm, with 1 or 2, rarely few, stipitate glands; leaf blade broadly elliptic or ovate to oblong-elliptic, 4-12 × 2.5-5.5 cm, with 1 or 2, rarely few, stipitate basal glands, glabrous, lateral veins 5-8 pairs, base cuneate, rarely ± rounded, attenuate into petiole, margin crenate-denticulate, apex acute or acuminate, or somewhat cuspidate. Inflorescences in leaf axils of upper stem and branches, usually 2(-5)-flowered, sometimes 1-flowered; peduncles 3-5 cm. Pedicels 1.5-3 cm, slender, bracteate at base; bracts linear-lanceolate or subulate, ca. 2 mm, apex acute. Flowers variable in size and color: red, crimson-red, pink, purple-red, purplish violet, or white. Lateral sepals 2, greenish or whitish, ovate-lanceolate or linear-lanceolate, 3-7 mm, apex acute. Lower sepal shallowly navicular, 0.8-1.5 cm deep, abruptly constricted into a curved spur; spur filiform, 2.4-4 cm. Upper petal broadly obcordate or obovate, 1.5-1.9 × 1.3-2.5 cm, apex emarginate, cuspidate, abaxial midvein narrowly cristate; lateral united petals not clawed, 1.8-2.5 cm, 2-lobed; basal and distal lobes nearly equal in size and shape; basal lobes obovate or obovate-spatulate, 1.4-2 × ca. 1.4 cm; distal lobes 1.2-2.3 × ca. 1.8 cm, margin entire or emarginate. Ovary fusiform, ca. 4 mm, glabrous. Capsule fusiform, 1.5-2 cm, glabrous. Fl. Jun-Oct. 2n = 16.
Herb, erect, usually branched, rather succulent; stems terete, thick, glabrous, usually striate, usually translucent, minutely white spotted. Leaves alternate, spirally arranged, often crowded above, the blade broadly elliptic or ovate, usually translucent, glabrous, 2.5-10 cm long, 1.3-5 cm broad, acute to short-acuminate at the apex, marginally crenate-denticulate with tentacular hairs on the apex of the crenations, narrowly cuneate at base, often forming a narrow wing on the petiole, with 7-12 pairs of ascending, inconspicuous, lateral veins; petiole 1-3 cm long, usually glabrous, with 1-several marginal tentacular hairs, the hairs to 1 mm long, flattened at the apex. Inflorescences of few-flowered racemes; peduncles 4-5 cm long, glabrous. Flowers usually dark, carmine, red, pink, orange, or violet, with the pedicel 2-2.2 cm long, glabrous, with a pair of linear-lanceolate bracts at the base of the pedicel, the bracts to 3 mm long, glabrous; lateral sepals 4-7 mm long, 2-3 mm broad, ovate-lanceolate, acute, usually glabrous, green; posterior sepal to 1.5 cm long, shallowly navicular, abruptly constricted into the spur, the spur up to 4 cm long, slender, slightly curved, glabrous; anterior petal to 12 mm long, up to 18 mm broad, broadly ovate or obcordate, usually retuse to emarginate at the apex; lateral petals united, very deeply 2-lobed, the lobes equal in size and shape, 1.5-2 cm long, 1.2-1.4 cm broad, obovate, rounded or subtruncate at apex; ovary usually glabrous. Capsule to 18 mm long, fusiform, glabrous; seeds numerous, ca 1.5 mm in diam, pyriform, blackish, usually covered with short thick hairs.
Impatiens walleriana Hook. f. in Oliv., Fl. Trop. Afr. 1: 302. 1868; I. sultanii Hook. f.
Hierbas glabras, rara vez ligeramente pubescentes en los brotes apicales. Hojas ovadas a elípticas, (2.5) 414 cm de largo y (2) 2.55.5 (7.5) cm de ancho, ápice agudo a cortamente acuminado, base angostamente cuneada, a menudo formando un ala angosta sobre el pecíolo y comúnmente con 1 o varias glándulas, márgenes crenados o crenado-denticulados, cada crena con un solo tricoma.
Cultivada y localmente abundante en ambientes húmedos y comúnmente sombreados, zona norcentral; 7001500 m; fl ene, feb, sepnov; Guzmán 925, Moreno 3412; nativa de Africa centro-oriental. Las cápsulas rara vez se forman en cultivo.
Rather succulent perennial 30–70(–80) cm. tall; stems simple or branched, often forming flat-topped or rounded plants, glabrous, rarely slightly pubescent at the shoot apices, green or reddish-tinged, occasionally rooting at the lower nodes.
Flowers in axillary racemes, usually 2–3(–5)-flowered, sometimes 1-flowered, but then ‘pedicel’ always with a bract near the middle, very variable in colour and size, orange, scarlet or crimson-red, pink, mauve, purplish, violet, or occasionally white, the sepals often whitish or greenish white.
Leaves spirally arranged; petiole (1–)3–6(–8) cm. long, with 1–3 extra-floral nectaries scattered along the length; lamina broadly elliptical or ovate to oblong-elliptical or oblong-ovate, (2.5–)4–13(–14) cm. long, (2–)2.5–5.5(–7.5) cm. broad, rather translucent (not always so!), often reddish tinged, the base cuneate, often abruptly so, rarely ± rounded, the apex acute, acuminate or somewhat cuspidate, glabrous; margin crenate or crenate-denticulate; lateral veins 5–8 pairs.
Bracts usually at least 2, often more than the number of flowers, linear-lanceolate or subulate, 3–6 mm. long, acute.
Peduncle (2–)3.2–5(–6.5) cm. long, glabrous or somewhat pubescent.
Pedicels (10–)15–30(–33) mm. long, slender, usually glabrous.
Lateral sepals 2 (1 pair) ovate-lanceolate or linear-lanceolate, acute, 3–7 mm. long, glabrous.
Fruit fusiform, 15–20 mm. long, 4–6 mm. broad, glabrous.
Lateral united petals 18–25 mm. long, the upper and lower petals almost equal in size and shape; upper petal obovate or obovate-spathulate, 12–23 mm. long, 9–18 mm. broad, entire or slightly emarginate; lower petal obovate or obovate-spathulate, sometimes rather asymmetrical, 14–20 mm. long, 7–14 mm. broad, entire or slightly emarginate.
Dorsal petal broadly obcordate or obovate, 11–19 mm. long, 13–25 mm. broad, flattish or slightly cupped, dorsally with a narrow crest terminating in a short acute point.
Lower sepal shallowly navicular,(8–)10–16 mm. long, abruptly constricted into a 28–45(–50) mm. long curved filiform spur, the tip usually slightly swollen, glabrous.
Juicy perennial herb, 30–50 (80) cm. high, usually branched to form a flat top; stems erect or straggling, succulent, thick, glabrous or rarely scattered-pilose, usually translucent, green or reddish, sometimes rooting at lower nodes.
Seeds numerous, c. 1·75 × 1·5 mm., pyriform, rusty or blackish, ± densely covered with short thick hairs on papillose bases.
Anterior petal up to 12 mm. long, up to 18 mm. broad (when flattened), very broadly ovate or obcordate, with the apex usually retuse to emarginate, rarely acute, dorsally very narrowly cristate; lateral united petals very deeply 2-lobed (the lobes appearing nearly separate), with the lobes nearly equal in shape and size, 10–20 × 7–15 mm. (sometimes even larger), obliquely obovate, obovate-spathulate or obovate-cuneate, with the apex rounded or sub-truncate (see t. 26 fig. 25).
Lateral sepals (3) 4–7 × 2·25–3 mm. (in cultivated specimen sometimes slightly larger), ovate-lanceolate or lanceolate-triangular, acute, glabrous (always?), green; posterior sepal relatively small, up to 1·5 cm. long, c. 0·5 cm. deep, shallowly navicular, bluntish-keeled, abruptly constricted into the spur, distally sometimes subcaudate, usually acute or subobtuse; spur up to 4 cm. long, slender, slightly curved, usually with the end somewhat thickened, glabrous.
Capsule up to 18 mm. long, broadly oblique-fusiform, glabrous.
Flowers in few-flowered axillary and/or terminal racemes, rarely apparently 1-flowered by reduction (but then the “pedicel” always with a small bract about the middle), very variable in colour and size, dark carmine, wine-red, pink, orange, violet, rarely white; bracts up to 6 mm. long, lanceolate-triangular, acute; pedicel 1–2·5 (3) cm. long, slender, succulent, usually glabrous.
Leaves spirally arranged, very rarely apparently opposite, petiolate; lamina very variable in shape and size, (3) 4·5–10 (15) × (2) 2·5–5 (7·5) cm., broadly elliptic or ovate to elliptic-oblong or ovate-oblong, subsucculent, usually translucent, dark or pale green to reddish-green on both surfaces, glabrous on both surfaces or rarely scattered-pilose beneath (mainly on the nerves), apex acute, often acuminate or cuspidate, rarely obtuse, margin crenate-denticulate, often with tentacular hairs on the apex of the crenations towards the base, base usually narrowly (but sometimes broadly) cuneate or rarely rounded and usually with the lamina running down the petiole and thus forming a narrow wing; secondary nerves 7–12 pairs, not very prominent beneath; petiole (1) 2–4·5 (6·5) cm. long, succulent, usually glabrous.
Forest, riverine thickets, damp, shaded places.