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  1. Family: Balsaminaceae A.Rich.
    1. Genus: Impatiens Riv. ex L.
      1. Impatiens engleri Gilg

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

    [FTEA]

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

    Habit
    Perennial herb to 1.5 m. tall, though often less; stems moderately branched, becoming leafless and somewhat woody below, glabrous or pubescent on the youngest parts.
    Leaves
    Leaves spirally arranged, ± opposite or in verticils of 3–7; petiole 1–6(–8) cm. long, rather slender, usually glabrous, sometimes with a few, ± 1 mm. diameter, darkish glands towards the top; lamina ovate, lanceolate or oblanceolate, (5–)8–15.5 cm. long, (2.5–)4–7.5 cm. broad, the base cuneate, the apex acute to shortly acuminate, glabrous or sparsely pubescent on both surfaces; lateral veins 6–11 pairs; margin finely crenate or crenate-serrate.
    Flowers
    Flowers solitary, axillary, epedunculate, pink or mauvish, often with a white central zone.
    Bracts
    Bracts subulate, 2–4 mm. long, inconspicuous.
    Pedicel
    Pedicels 6.6–9.5 cm. long, glabrous or sparsely pubescent.
    Calyx
    Lateral sepals 2, linear-lanceolate, 6–8 mm. long, acute. Lower sepal narrowly and obliquely navicular, 11–19 mm. long, abruptly constricted into a 4–5.1 cm. long curved filiform spur, somewhat swollen at the tip, glabrous or sparsely pubescent throughout.
    Corolla
    Lateral united petals 20–25 mm. long; upper petal of each pair oblong or ± oblanceolate, 17–25 mm. long, 8–13 mm. broad, entire or slightly emarginate; lower petal of each pair transversely oblong or obovate, 20–25 mm. long, 10–13 mm. broad, distally drawn out into a 5–8 × 2.5–5 mm. oblong or ± triangular appendage. Dorsal petal suborbicuar, 17–19 mm. long, 22–23 mm. broad, emarginate, dorsally with a narrow crest.
    Ovary
    Ovary glabrous.
    Fruits
    Fruit fusiform, ± 19 mm. long, 6 mm. broad, glabrous.

    Distribution

    Native to:

    Tanzania

    Accepted Infraspecifics

    Synonyms

    Other Data

    Impatiens engleri Gilg appears in other Kew resources:

    Bibliography

    First published in Bot. Jahrb. Syst. 43: 112 (1909)

    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, Impat. Afr.: 141 (1980).
    • Gilg in A. Engler, Botanische Jahrbücher für Systematik, Pflanzengeschichte und Pflanzengeographie 43: 112 (1909).

    Sources

    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 2020. 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 2020. 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