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  1. Family: Balsaminaceae A.Rich.
    1. Genus: Impatiens Riv. ex L.
      1. Impatiens volkensii Warb.

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

    [FTEA]

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

    Habit
    Robust suffruticose perennial to 4 m.; stems thick and succulent, erect, simple, generally only branched at the base, densely leaved especially towards the apex, glabrous.
    Leaves
    Leaves spirally arranged, occasionally subopposite; petiole (2–)4–13 cm. long; lamina oblong-elliptic to oblong or elliptic-lanceolate, 11.5–28 cm. long, 5.5–12.4 cm. broad, the apex subacute or shortly acuminate, the base slightly attenuate or subrounded, glabrous above, pubescent on the midrib and lateral veins beneath; lateral veins 16–26 pairs; margin finely crenate-dentate with several 2–2.5 mm. long fimbriae toward the bases; stipule-like processes present, crescent-shaped, 4–7 mm., cupped beneath.
    Flowers
    Flowers in axillary fascicles of 3–10, epedunculate, white, the lateral united petals veined and dotted purple towards the base.
    Bracts
    Bracts linear-subulate, 2–4 mm. long.
    Pedicel
    Pedicels 24–28 mm. long, slender, glabrous.
    Calyx
    Lateral-sepals 2, broadly-ovate to oblong, 5–9 mm. long, 4–9 mm. broad, shortly apiculate, glabrous. Lower sepal triangular-saccate, 15–20 mm. long, 6–8 mm. deep, constricted ± gradually into a 8–25 mm. long curved filiform spur, slightly swollen at the tip.
    Corolla
    Dorsal petal 14–18 mm. long, 9–12 mm. broad, cucullate, dorsally with a narrow crest terminating in a short acute point. Lateral united petals 34–39 mm. long, the upper and lower petal of each pair subequal in size; upper petal transversely oblong-elliptic, 15–23 mm. long, 8–11 mm. broad; lower petal oblong, 14–22 mm. long, 9–15 mm. broad, with an emargination distally along the inner margin.
    Filaments
    Filaments 11–13 mm. long.
    Ovary
    Ovary glabrous.
    Fruits
    Fruit fusiform, with a short apiculum, 22–28 mm. long, 4.5–7 mm. broad, glabrous.
    Figures
    Fig. 3/45, p. 6.
    Habitat
    In moist shaded places, generally along stream banks and stream bedrocks, often forming very large groups; 1500–2500 m.
    Distribution
    T2 T7 now known elsewhere

    Images

    Distribution

    Native to:

    Tanzania

    Accepted Infraspecifics

    Synonyms

    Other Data

    Impatiens volkensii Warb. appears in other Kew resources:

    Date Reference Identified As Barcode Type Status
    Volkens, G. [737], Tanzania K000419514 Unknown type material

    Bibliography

    First published in H.G.A.Engler (ed.), Pflanzenw. Ost-Afrikas, C: 253 (1895)

    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.: 162, fig. 103, pl. 33 (1980).
    • Gilg in A. Engler, Botanische Jahrbücher für Systematik, Pflanzengeschichte und Pflanzengeographie 43: 100 (1909).
    • Warb. in Die Pflanzenwelt Ost-Afrikas und der Nachbargebiete, Theile C: 253, t. 26/A–H (1895).

    Sources

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

    Herbarium Catalogue Specimens
    'The Herbarium Catalogue, Royal Botanic Gardens, Kew. Published on the Internet http://www.kew.org/herbcat [accessed on Day Month Year]'. Please enter the date on which you consulted the system.
    Digital Image © Board of Trustees, RBG Kew http://creativecommons.org/licenses/by/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