Impatiens balfourii

Annual herb to c. 1.5 m high, glabrous. Leaves alternate, elliptic-ovate to lanceolate, 4–10 cm long, 1.5–5 cm wide, mid green above, paler below; margins regularly toothed; apex acuminate; glandular-stipitate at base; petiole up to 55 mm long. Inflorescence a few-flowered raceme; peduncles up to 10 cm long. Flowers white and pink with yellow markings near mouth, 18–27 mm long; sepals 3, lateral sepals c. 2.5 mm long, lower sepal c. 25 mm long, conical, tapering to a slender, straight spur 10–15 mm long; petals 5, uppermost petal 5.5–6 mm long, united lateral petals unequal, lower petals 20–25 mm long, upper petals much smaller. Capsule broadly linear, 20–25 mm long, erect, glabrous; seeds ovoid, 2.5–3 mm long. Flowers Dec.–Apr.(–Jun.).