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This species is accepted, and its native range is Tanzania.

[FTEA]

Balsaminaceae, C. Grey-Wilson. Flora of Tropical East Africa. 1993

Habit
Glabrous perennial herb up to 30 cm. tall; stems decumbent, rooting at the lower nodes, green flushed with pink or red.
Leaves
Leaves spirally arranged, deep green above, pale green beneath; petiole 1–6.2 cm. long, slender; lamina ovate to ovate-lanceolate or ovate-elliptic, 2–10.2 cm. long, 1.5–5 cm. broad, the base ± rounded or somewhat attenuate into the petiole, the apex acuminate, often shortly apiculate; lateral veins 3–7 pairs, linked together by a loose network of secondary veins; margin shallowly crenate, the crenations 4–10 mm. apart.
Flowers
Flowers solitary, epedunculate, borne in the axils of the uppermost leaves, mid to deep pink, whitish at the base of the lateral united petals and with a white spur.
Calyx
Lateral sepals 2, oblong, 5–6 mm. long, shortly apiculate. Lower sepal shallowly and rather obliquely navicular, 1.1–1.5 cm. long, abruptly constricted into a 4.4–6.1 cm. long, curved filiform spur, gradually tapering to the tip.
Corolla
Dorsal petal suborbicular, 12–17 mm. long, 16–20 mm. broad, emarginate, with a shallow crest on the posterior side. Lateral united petals 18–24 mm. long, the upper and lower petals of each pair about equal in size; upper petal broadly elliptic to kidney-shaped, 17–20 mm. long, 10–14 mm. broad, entire; lower petal broadly oval, 16–20 mm. long, 10–15 mm. broad, with a slight emargination distally along the inner margin.
Ovary
Ovary glabrous.
Fruits
Fruit unknown.
Habitat
Deeply shaded areas in rain-forest, particularly on stream banks or rocks, occasionally on fallen mossy branches; 1100–1300 m.
Distribution
T6 not known elsewhere

Native to:

Tanzania

Impatiens mahengeensis Grey-Wilson appears in other Kew resources:

First published in Kew Bull. 35: 184 (1980)

Accepted by

  • Grey-Wilson, C. (1982). Flora of Tropical East Africa, Balsaminaceae: 1-76.

Literature

Kew Backbone Distributions

  • Grey-Wilson, C. (1982). Flora of Tropical East Africa, Balsaminaceae: 1-76.

Flora of Tropical East Africa

  • Grey-Wilson in Kew Bulletin 35: 184, fig. 4 (1980).

Flora of Tropical East Africa
Flora of Tropical East Africa
http://creativecommons.org/licenses/by-nc-sa/3.0

Kew Backbone Distributions
The International Plant Names Index and World Checklist of Selected Plant Families 2021. Published on the Internet at http://www.ipni.org and http://apps.kew.org/wcsp/
© Copyright 2017 World Checklist of Selected Plant Families. http://creativecommons.org/licenses/by/3.0

Kew Names and Taxonomic Backbone
The International Plant Names Index and World Checklist of Selected Plant Families 2021. Published on the Internet at http://www.ipni.org and http://apps.kew.org/wcsp/
© Copyright 2017 International Plant Names Index and World Checklist of Selected Plant Families. http://creativecommons.org/licenses/by/3.0