Impatiens hochstetteri flowers grow solitary or in small groups from upper axils. Flower stalks become about 5 cm long.
The flowers are mauve or pink and white. The corolla is two-lipped, the lower two petals being two-lobed (on this specimen pink with small yellow blotches at the base), the others much smaller and bluish purple here. The flower with its deeply lobed lower petals becomes about 2 cm in diameter. The thread-like white spur of the flower is the skew long, thin protrusion from behind the petal-like lower sepal in the photo. The spurs vary in length, typically about 1,6 cm long.
Flowering happens at any time of the year, more in late summer and early autumn.
The generic name impatiens is derived from the explosive dehiscing of the seed pods, a dramatic event occurring once they ripen and scatter the seeds.
Small tufts of hair can be seen between some of the leaf margin scallops on the plant in picture (Manning, 2009; Germishuizen and Clarke, 2003; Pooley, 1998; iNaturalist).