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  1. Family: Balsaminaceae A.Rich.
    1. Genus: Impatiens Riv. ex L.
      1. Impatiens briartii De Wild. & T.Durand

        This species is accepted, and its native range is Uganda to Angola.

    [FTEA]

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

    Habit
    Simple or laxly branched, often rather straggling, perennial to 1 m. tall; stems decumbent to erect, often rooting at the lower nodes, usually glabrous.
    Leaves
    Leaves opposite; petiole 0.2–3.2 cm. long; lamina ovate-lanceolate or triangular-ovate to oblong-lanceolate, 3.5–8.3 cm. long, 1.3–3.6 cm. broad, acute to acuminate, the base rounded, subtruncate or subcordate, glabrous or with a few hairs on the midrib and lateral veins above and/or beneath; lateral veins 4–8 pairs; margin crenate or crenate-dentate.
    Stipules
    Stipules 1.5–3(–5) mm. long, with 2–4 acute teeth.
    Inflorescences
    Inflorescence a (2–)5–10-flowered axillary raceme; flowers pale pink or pale mauve, the lateral united petals with a red spot towards the base, the spur sometimes yellowish edged with red.
    Peduncles
    Peduncle 2.2–6.5 cm. long, ± erect, glabrous.
    Bracts
    Bracts 1–4 mm. long, linear-oblong, obtuse, usually with 2–6 acute teeth at the base, the teeth (1–) 1.5–3 mm. long, ciliate.
    Pedicel
    Pedicels 9–14 mm. long, slender, glabrous.
    Calyx
    Lateral sepals 2, 1.5–2.5 mm. long, with several acute teeth along the lower margin towards the base, persisting in fruit. Lower sepal shallowly and obliquely navicular, 5.5–8 mm. long, ± abruptly constricted into a 10–30 mm. long curved filiform spur, which is somewhat thickened and 2–2.5 mm. broad in the middle.
    Corolla
    Dorsal petal ovate, 4–6 mm. long, 3.5–5 mm. broad, subcucullate. Lateral united petals 11–15 mm. long, with a 14–17(–20) mm. long curved filiform appendage inserted just below the sinus formed between the upper and lower petal of each pair and which extends into the spur of the lower sepal; upper petal asymmetrically oblong or somewhat kidney-shaped, 5–9 mm. long, 2.5–6 mm. broad, obtuse, ± entire; lower petal obliquely semi-ovate, 9–12 mm. long, 6–8 mm. broad, slightly emarginate along the outer margin.
    Ovary
    Ovary glabrous.
    Fruits
    Fruit broad-fusiform, 6–8 mm. long, 3–3.5 mm. broad, glabrous.
    Figures
    Fig. 2/1, p. 4.
    Habitat
    Damp places, marshes, swamps and along river banks and in upland rain-forest gullies; 1100–2300 m.
    Distribution
    T1 T4 T7 U2 U4
    [FZ]

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

    Habit
    Weak perennial herb; stems 0·3–0·8 (1·3) m. high, erect or decumbent and rooting at the lower nodes, simple or more often laxly branched (mainly in the upper parts), glabrous or rarely with the younger parts sparsely pilose, succulent, reddish or dark green.
    Leaves
    Leaves opposite, stipulate, petiolate; lamina (3) 4–8 × 1·2–3 cm., lanceolate or ovate-lanceolate to lanceolate-oblong, rarely ovate, chartaceous to papyraceous, somewhat olive-green above, glaucous or pale silvery below, when young somewhat pilose (mainly below) or glabrous, when older usually glabrous but sometimes somewhat pilose (mainly on the midrib underneath), apex acute or subobtuse, margin crenate usually with small teeth in the sinuses, base rounded or broadly cuneate or very rarely subcordate; secondary nerves 6–8 pairs, very fine, somewhat prominent underneath; petiole (0·2) 0·6–1·7 (2·3) cm. long, slender, canaliculate, pilose or glabrous; stipules up to 5 mm. long, triangular-subulate, very slender.
    Flowers
    Flowers in few- to many-flowered axillary and/or terminal racemes, white or pink or pale mauve, usually with 2 lateral red spots at the throat of the posterior sepal and with small white spots in front of them (the spur often bright yellow edged with red); pedicels 2–12 mm. long, very slender, usually glabrous; bracts 1·5–4 mm. long, oblong-obovate, apically obtuse and somewhat thickened (glandular tip?) with 1 or 2 (rarely 3) pairs of 1–3 mm. long spreading filiform appendages on the margin.
    Calyx
    Lateral sepal 3–5 × c. 2 mm., ovate to ovate-oblong, somewhat oblique, with the apex obtuse and slightly thickened (glandular tip?), with 1 or 2 (rarely 3) pairs of spreading filiform appendages on the margin in the lower half, glabrous; posterior sepal 7–8·5 mm. long, 2·5–4 mm. deep, abruptly contracted into the spur, distally acute, rarely subcaudate; spur 10–14 (17) mm. long, slightly incurved, usually cylindric, with the end acute or bluntish.
    Corolla
    Anterior petal 4–6 mm. long, c. 5 mm. broad (when flattened), dorsally not cristate, glabrous; lateral united petals (10) 12–14 (17) mm. long, deeply 2-lobed, with a very long finely filiform appendage (inserted just below the sinus of the lobes) which extends into the spur of the posterior sepal at the base (see t. 26 fig. 18); anterior lobe up to 10 × 8 mm., usually obliquely obovate or obdeltate, sometimes subtruncate; posterior lobe similar in shape, 1/2–1/3 the size of the anterior one.
    Ovary
    Ovary glabrous.
    Fruits
    Capsule 5–10 mm. long, obliquely fusiform, glabrous.
    Seeds
    Seeds numerous, c. 3 × 1·75 mm., elliptic in outline, brown or blackish, densely covered with short spreading conical multicellular hairs.

    Distribution

    Native to:

    Angola, Burundi, Tanzania, Uganda, Zambia, Zaïre

    Synonyms

    Other Data

    Impatiens briartii De Wild. & T.Durand appears in other Kew resources:

    Bibliography

    First published in Bull. Soc. Roy. Bot. Belgique, Compt. Rend. 38: 185 (1899)

    Accepted by

    • Figueiredo, E. & Smith, G.F. (2008). Plants of Angola Strelitzia 22: 1-279. National Botanical Institute, Pretoria.
    • Grey-Wilson, C. (1982). Flora of Tropical East Africa, Balsaminaceae: 1-76.
    • Exell, A.W., Fernandes, A. & Wild, H. (eds.) (1963). Flora Zambesiaca 2(1): 1-351. Royal Botanic Gardens, Kew.
    • Robyns, W. & al. (eds.) (1948-1963). Flore du Congo Belge et du Ruanda-Urundi 1-10.

    Literature

    Kew Backbone Distributions

    • Figueiredo, E. & Smith, G.F. (2008). Plants of Angola Strelitzia 22: 1-279. National Botanical Institute, Pretoria.
    • Exell, A.W., Fernandes, A. & Wild, H. (eds.) (1963). Flora Zambesiaca 2(1): 1-351. Royal Botanic Gardens, Kew.

    Flora of Tropical East Africa

    • Grey-Wilson in Impat. Afr.: 77, fig. 18 (1980).
    • Launert in Flora Zambesiaca 2: 164, t. 26/18 (1963).
    • Wilczek & Schulze in Flore du Congo Belge et du Ruanda-Urundi, 9: 405 (1960).
    • G.M. Schulze in Consp. Fl. Angol. 2: 156 (1956).
    • G.M. Schulze in Bol. Soc. Brot., sér. 2, 29: 12 (1955)
    • Gilg in A. Engler, Botanische Jahrbücher für Systematik, Pflanzengeschichte und Pflanzengeographie 43: 104 (1909).
    • De Wild. & Th. Dur. in Bulletin de la Société Royale de Botanique de Belgique 38: 185 (1899).

    Sources

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

    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