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  1. Family: Balsaminaceae A.Rich.
    1. Genus: Impatiens Riv. ex L.
      1. Impatiens irvingii Hook.f.

        This species is accepted, and its native range is Tropical Africa.

    [FZ]

    Balsaminaceae, E. Launert. Flora Zambesiaca 2:1. 1963

    Habit
    Perennial herb usually much branched; stems up to 1·5 m. long or even more, succulent, prostrate or ascending, rarely erect, red or green tinged with red, usually somewhat swollen at the nodes, glabrous or hairy (sometimes all over) with a very dense velvety indumentum.
    Leaves
    Leaves spirally arranged, sessile or petiolate; lamina (4) 6–13 (16) × (1) 1·5–3·5 (4·5) cm., lanceolate, oblong-lanceolate, ovate-lanceolate, oblong-elliptic or rarely elliptic, chartaceous, usually olive or dark green on the upper surface, glaucous, silvery or greyish-green on the lower one, glabrous on both surfaces or pubescent on the lower and glabrous or sparsely pilose on the upper one, or often with a very dense velvety indumentum below, apex acute or very rarely subobtuse and usually acuminate, margin crenate-denticulate or rarely serrate and sometimes ciliate towards the base, base cuneate or rarely subrounded; secondary nerves 8–13 pairs; petiole up to 3 cm. (in our region leaves subsessile in only specimen known), glabrous or more often pilose or pubescent.
    Flowers
    Flowers axillary, solitary or in clusters of 2 or 3, pale purple or violet; bracts up to 4 mm. long, lanceolate-triangular or subulate, acute, usually densely pilose, rarely glabrous; pedicels up to 9 cm. long, slender, pilose or glabrous.
    Calyx
    Lateral sepals 4–7 × 1·5–2·5 (3) mm., lanceolate to ovate-lanceolate, rarely oblong-lanceolate, acuminate, usually ± densely pilose, sometimes glabrous. Posterior sepal 9–14 mm. long, c. 2·5 mm. deep, shallowly and obliquely navicular, abruptly constricted into the spur, distally caudate, usually ± densely pilose, rarely glabrous; spur up to 5·5 cm. long, rather slender, subconical in the upper half, cylindric in the lower one, with a subacute end, ± densely pilose, rarely glabrous, strongly incurved when young, slightly incurved or often nearly straight when older.
    Corolla
    Anterior petal 8–15 mm. high and up to 17 mm. broad (when flattened), dorsally very narrowly cristate with crest often rim-like, apex usually entire, mucronate. Lateral united petals very variable in size, (13) 17–25 (30) mm. long, deeply 2-lobed; lobes nearly always ± overlapping, usually glabrous, rarely pubescent outside; anterior lobe 10–18 × 7–15 mm., obliquely semi-elliptic, semi-circular or rarely obovate, entire, with the lower margin usually ± straight; posterior lobe usually somewhat smaller (very rarely a little larger) than the anterior one, usually obovate, rarely subcircular, entire (see t. 26 fig. 13).
    Ovary
    Ovary glabrous.
    Fruits
    Capsule up to 1·8 cm. long, fusiform, glabrous.
    Seeds
    Seeds numerous, c. 2·5 × 1·7 mm., obovate in outline, brownish, with a papillose surface, glabrous.

    Images

    Distribution

    Native to:

    Angola, Benin, Burundi, Cabinda, Cameroon, Central African Repu, Chad, Congo, Gabon, Ghana, Guinea, Ivory Coast, Liberia, Malawi, Nigeria, Rwanda, Senegal, Sierra Leone, Sudan, Tanzania, Uganda, Zambia, Zaïre

    Synonyms

    Other Data

    Impatiens irvingii Hook.f. appears in other Kew resources:

    Date Reference Identified As Barcode Type Status
    Jun 1, 2010 Cheek, M. [11779], Cameroon K000023355
    Jun 1, 2010 Harvey, Y.B. [100], Cameroon K000023354
    Aug 1, 2009 Etuge, M. [5130], Cameroon K000023352
    Aug 1, 1972 Brunt, M.A. [333], Cameroon K000094432
    Jan 1, 1908 Irving [s.n.], Nigeria K000419400
    Jan 1, 1908 Illegible [possibly Barker] [3257], Nigeria K000419401
    Tanzania 38681.000
    39305.000
    Nigeria K000419398
    Dawkins, H.C. [413], Uganda 8898.000
    Dalziel, J.M. [8217], Cameroon K000094433
    Burtt, B.L. [B10], Nigeria 21860.000
    Meikle, R.D. [604], Nigeria 8896.000
    Meikle, R.D. [1237], Nigeria 8897.000
    Scott Elliot, G.F. [4300], Sierra Leone K000419397 isotype
    Kirk, J. [s.n.], Malawi K000419539
    Kirk, J. [s.n.], Malawi K000419540
    Irving [s.n.], Nigeria K000419399

    Bibliography

    First published in D.Oliver & auct. suc. (eds.), Fl. Trop. Afr. 1: 300 (1868)

    Accepted by

    • Darbyshire, I., Kordofani, M., Farag, I., Candiga, R. & Pickering, H. (eds.) (2015). The Plants of Sudan and South Sudan: 1-400. Kew publishing, Royal Botanic Gardens, Kew.
    • Lejoy, J., Ndjele, M.-B. & Geerinck, D. (2010). Catalogue-flore des plantes vasculaires des districts de Kisangani et de la Tshopo (RD Congo) Taxonomania 30: 1-307.
    • Figueiredo, E. & Smith, G.F. (2008). Plants of Angola Strelitzia 22: 1-279. National Botanical Institute, Pretoria.
    • Sosef, M.S.M. & al. (2006). Check-list des plantes vasculaires du Gabon Scripta Botanica Belgica 35: 1-438.
    • Akoègninou, A., van der Burg, W.J. & van der Maesen, L.J.G. (eds.) (2006). Flore Analytique du Bénin: 1-1034. Backhuys Publishers.
    • Sita, P. & Moutsambote, J.-M. (2005). Catalogue des plantes vasculaires du Congo, ed. sept. 2005: 1-158. ORSTOM, Centre de Brazzaville.
    • Grey-Wilson, C. (1982). Flora of Tropical East Africa, Balsaminaceae: 1-76.
    • Berhaut, J. (1974). Flore illustrée du Sénégal 2: 1-695. Gouvernement du Sénégal, Ministère du développement rural direction des eaux et forêta, Dakar.
    • Lebrun, J.-P., Audru, J., Gaston, A. & Mosnier, M. (1972). Catalogue des Plantes Vasculaires du Tchad Méridional: 1-289. Institut d' Elevage et de Médecine Vétérinaire des Pays Tropicaux, Maisons Alfort.
    • Exell, A.W., Fernandes, A. & Wild, H. (eds.) (1963). Flora Zambesiaca 2(1): 1-351. Royal Botanic Gardens, Kew.
    • Hutchinson, J., Dalziel, J.M. & Keay, R.W.J. (1954-1958). Flora of West Tropical Africa, ed. 2, 1: 1-828.
    • Robyns, W. & al. (eds.) (1948-1963). Flore du Congo Belge et du Ruanda-Urundi 1-10.

    Literature

    Kew Backbone Distributions

    • Darbyshire, I., Kordofani, M., Farag, I., Candiga, R. & Pickering, H. (eds.) (2015). The Plants of Sudan and South Sudan: 1-400. Kew publishing, Royal Botanic Gardens, Kew.
    • Lejoy, J., Ndjele, M.-B. & Geerinck, D. (2010). Catalogue-flore des plantes vasculaires des districts de Kisangani et de la Tshopo (RD Congo) Taxonomania 30: 1-307.
    • Figueiredo, E. & Smith, G.F. (2008). Plants of Angola Strelitzia 22: 1-279. National Botanical Institute, Pretoria.
    • Sosef, M.S.M. & al. (2006). Check-list des plantes vasculaires du Gabon Scripta Botanica Belgica 35: 1-438.
    • Akoègninou, A., van der Burg, W.J. & van der Maesen, L.J.G. (eds.) (2006). Flore Analytique du Bénin: 1-1034. Backhuys Publishers.
    • Sita, P. & Moutsambote, J.-M. (2005). Catalogue des plantes vasculaires du Congo, ed. sept. 2005: 1-158. ORSTOM, Centre de Brazzaville.
    • Grey-Wilson, C. (1982). Flora of Tropical East Africa, Balsaminaceae: 1-76.
    • Berhaut, J. (1974). Flore illustrée du Sénégal 2: 1-695. Gouvernement du Sénégal, Ministère du développement rural direction des eaux et forêta, Dakar.
    • Lebrun, J.-P., Audru, J., Gaston, A. & Mosnier, M. (1972). Catalogue des Plantes Vasculaires du Tchad Méridional: 1-289. Institut d' Elevage et de Médecine Vétérinaire des Pays Tropicaux, Maisons Alfort.
    • Exell, A.W., Fernandes, A. & Wild, H. (eds.) (1963). Flora Zambesiaca 2(1): 1-351. Royal Botanic Gardens, Kew.
    • Hutchinson, J., Dalziel, J.M. & Keay, R.W.J. (1954-1958). Flora of West Tropical Africa, ed. 2, 1: 1-828.

    Sources

    Flora Zambesiaca
    Flora Zambesiaca
    http://creativecommons.org/licenses/by-nc-sa/3.0

    Flora of West Tropical Africa
    Flora of West Tropical Africa

    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