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  1. Family: Lentibulariaceae Rich.
    1. Genus: Utricularia L.
      1. Utricularia welwitschii Oliv.

        This species is accepted, and its native range is Tanzania to S. Africa, Central Madagascar.

    [FTEA]

    Lentibulariaceae, P. Taylor. Flora of Tropical East Africa. 1973

    Habit
    Terrestrial herb.
    Rhizoids
    Rhizoids and stolons capillary, numerous from the base of the scape.
    Leaves
    Leaves scattered on the stolons, often decayed at anthesis, obovate-spathulate to linear-oblanceolate, up to 3 cm. long, 0.5–2 mm. wide, 1-nerved.
    Traps
    Traps numerous, ovoid, 0.4–0.8 mm. long, stalked; mouth terminal; upper lip projecting, fringed with ± 5 glandular hairs; lower lip with radiating rows of ± sessile glands.
    Inflorescences
    Inflorescence erect, simple or branched above, 4–50 cm. high; scape usually robust, straight or twining, smooth; inflorescence-axis usually flexuous; flowers 1–25 or more, usually distant; scales numerous, similar to the bracts; bracts basifixed, lanceolate to ovate, 0.6–1.6 mm. long; bracteoles lanceolate, ± as long as the bracts; pedicels up to 1 mm. long.
    Calyx
    Calyx-lobes subequal, orbicular, 1.5–2.5 mm. long, densely papillose, margin strongly recurved, apex tridenticulate.
    Corolla
    Corolla usually violet with a yellow blotch on the palate, sometimes wholly yellow, 5–15 mm. long; upper lip broadly ovate to orbicular, 2–4 times as long as the upper calyx-lobe, apex rounded, truncate or emarginate; lower lip orbicular, apex rounded, entire or obscurely 3-crenate; palate raised, usually distinctly 2-gibbous; spur subulate, acute, 1.5–2 times as long as the lower lip.
    Stamens
    Filaments filiform; anther-thecae subdistinct.
    Pistil
    Ovary globose; style obsolete; stigma lower lip semi-orbicular, upper much smaller, deltoid.
    Fruits
    Capsule globose, ± 1.5 mm. long, dehiscing by ab- and adaxial ovate-lanceolate pores.
    Seeds
    Seeds numerous, ovoid, angular, 0.25 mm. long; testa smooth, cells indistinct, ± isodiametric.
    Habitat
    Marshy grassland; 900–2000 m.
    Distribution
    T4 T7 T8 Zaire (Katanga), Rwanda and Burundi to Angola and South Africa (Transvaal)
    [FZ]

    Lentibulariaceae, P. Taylor. Flora Zambesiaca 8:3. 1988

    Habit
    Terrestrial herb.
    Rhizoids and Stolons
    Rhizoids and stolons capillary, numerous from the base of the peduncle.
    Leaves
    Leaves scattered on the stolons, often decayed at anthesis, obovate-spathulate to linear-oblanceolate, up to 30 × 0.5–2 mm., 1-nerved.
    Traps
    Traps numerous, ovoid, 0.4–0.8 mm. long, stalked; mouth terminal with a dorsal fringe of more or less 5 glandular hairs and ventral radiating rows of more or less sessile glands.
    Inflorescences
    Inflorescence erect, simple or branched above, 4–50 cm. high; peduncle usually robust, straight or twining, smooth; inflorescence-axis usually flexuous; flowers 1–25 or more, usually distant; scales numerous, similar to the bracts; bracts basifixed, lanceolate to ovate, 0.6–1.6 mm. long; bracteoles lanceolate, more or less as long as the bracts; pedicels up to 1 mm. long.
    Calyx
    Calyx lobes subequal, circular, 1.5–2.5 mm. long, densely papillose, margin strongly incurved, with apex tridenticulate.
    Corolla
    Corolla usually violet with a yellow blotch on the palate, sometimes wholly yellow, 5–15 mm. long; superior lip broadly ovate to circular, 2–4 times as long as the upper calyx lobe, with apex rounded, truncate or emarginate; inferior lip circular, with apex rounded, entire or obscurely 3-crenate; palate raised, usually distinctly 2-gibbous; spur subulate, acute, 1.5–2 times as long as the inferior lip.
    Stamens
    Filaments filiform; anther-thecae subdistinct.
    Pistil
    Ovary globose; style obsolete; stigma inferior lip semi-circular, superior much smaller, deltoid.
    Fruits
    Capsule globose, more or less 1.5 mm. long, dehiscing by dorsal and ventral ovate-lanceolate pores.
    Seeds
    Seeds numerous, ovoid, angular, 0.25 mm. long; testa smooth, cells indistinct, more or less isodiametric.

    Images

    Distribution

    Native to:

    Angola, Madagascar, Malawi, Northern Provinces, Tanzania, Zambia, Zaïre, Zimbabwe

    Synonyms

    Other Data

    Utricularia welwitschii Oliv. appears in other Kew resources:

    Date Reference Identified As Barcode Type Status
    Gossweiler, J. [s.n.], Angola K001009321
    Gossweiler, J. [s.n.], Angola K001009323
    Faulkner, H.G. [A373], Angola K001009324
    Welwitsch [263], Angola K000430245 Unknown type material
    Humbert, H. [16688], Angola K001009322
    Baum, H. [305], Angola K001009325
    Welwitsch. [266], Angola K000430244 Unknown type material
    Stopp, K. [BO127], Angola K001009320
    Hess-Wyss, H. [52/299], Angola K001009316
    Hess-Wyss, H. [52/1463], Angola K001009317
    Hess-Wyss, H. [51/454], Angola K001009318
    Hess-Wyss, H. [51/371], Angola K001009319

    Bibliography

    First published in J. Linn. Soc., Bot. 9: 152 (1865)

    Accepted by

    • Figueiredo, E. & Smith, G.F. (2008). Plants of Angola Strelitzia 22: 1-279. National Botanical Institute, Pretoria.
    • Taylor, P. (1989). The Genus Utricularia: a taxonomic monograph: 1-724. Her Majesty's stationery office, London.
    • Launert, E. (ed.) (1988). Flora Zambesiaca 8(3): 1-118. Royal Botanic Gardens, Kew.

    Literature

    Kew Backbone Distributions

    • Figueiredo, E. & Smith, G.F. (2008). Plants of Angola Strelitzia 22: 1-279. National Botanical Institute, Pretoria.
    • Taylor, P. (1989). The Genus Utricularia: a taxonomic monograph: 1-724. Her Majesty's stationery office, London.

    Flora of Tropical East Africa

    • P. Taylor in Fl. Afr. Centr., Lentib.: 18, t. 4/1–18 (1972).
    • P. Taylor in Kew Bulletin 18: 144 (1964), pro parte, excl. vars.
    • Stapf in Flora of Tropical Africa 4 (2): 478 (1906).
    • Oliv. in Journal of the Linnean Society of London, Botany 9: 152 (1865).

    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

    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