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  1. Family: Aponogetonaceae Planch.
    1. Genus: Aponogeton L.f.
      1. Aponogeton abyssinicus Hochst. ex A.Rich.

        This species is accepted, and its native range is Ethiopia to Malawi.

    [FTEA]

    Aponogetonaceae, K.A. Lye (Agricultural University of Norway). Flora of Tropical East Africa. 1989

    Habit
    Plants monoecious.
    Tubers
    Tuber oval, shortly cylindrical or irregularly shaped, 10–30 mm. long and 5–20 mm. thick, densely set with whitish roots above.
    Leaves
    Leaves few–many; petiole (except in var. graminifolius) 3–60 cm. long and 0.6–3 mm. thick, greenish, terete or somewhat compressed; blade usually oval to lanceolate, floating, with acute to obtuse tip and cuneate to truncate base, very rarely (only in var. cordatus) the base is prominently cordate, 3–12 cm. long and 0.5–5 cm. wide, green, but sometimes dark-spotted beneath; midrib very prominent on lower surface, parallel nerves 2–4 on each side of the midrib; very rarely the leaves sessile, linear and grass-like (in var. graminifolius).
    Inflorescences
    Inflorescence a bifid spike 10–50 mm. long and 2–8 mm. wide when flowering, with many usually densely set bisexual or female flowers facing in all directions; peduncles 5–45 cm. long and 1–5 mm. thick, terete or somewhat flattened, green to reddish; spathe 5–20 mm. long, pale green with darker longitudinal lines (and sometimes spots).
    Flowers
    Flowers usually consisting of 2 tepals, 6 stamens and 3 ovaries (rarely no stamens and up to 7 ovaries in apomictic plants).
    Tepal
    Tepals persistent or caducous, pinkish, mauve to bluish violet, rarely white (only in var. albiflorus), oval, obovate to ligulate, or with a narrow base and a wider upper part, 1–5 mm. long, with 1 nerve, rarely densely set with numerous reddish brown gland-dots (only in var. glanduliferus).
    Stamens
    Stamens 2–3 mm. long; filaments white or violet, somewhat thickened towards the base; anthers 0.2–0.4 mm. long and 0.2–0.3 mm. wide, violet to almost black, but pollen yellow.
    Fruits
    Follicles grey to brownish, 3–7 mm. long with a prominent 1–2 mm. long beak of the same colour as the remainder of the follicle or much darker, containing 4–14 ovules.
    Seeds
    Seeds elliptic to elongate, 0.7–1.5 mm. long and 0.2–0.4 mm. wide, with longitudinal ridges, but not prominently winged; testa double.

    Images

    Distribution

    Native to:

    Eritrea, Ethiopia, Kenya, Malawi, Rwanda, Somalia, Tanzania, Uganda, Zaïre

    Synonyms

    Other Data

    Aponogeton abyssinicus Hochst. ex A.Rich. appears in other Kew resources:

    Date Reference Identified As Barcode Type Status
    Jan 1, 1971 Speke [s.n.], Kenya K000346041 holotype
    Greenway, P.J. [10005], Tanzania 1292.000
    Schimper [1483], Ethiopia K000346036 Unknown type material
    Schimper [1483], Ethiopia K000346037 Unknown type material
    Hildebrandt, J.M. [2645], Kenya K000346040
    May 6, 1985 Lindeman, H.A. [783], Tanzania Aponogeton abyssinicus var. glandulifera K000346045 holotype
    May 6, 1985 Richards, H.M. [10352], Tanzania Aponogeton abyssinicus var. graminifolius K000346046 holotype
    May 6, 1985 Wingfield, R. [2185], Tanzania Aponogeton abyssinicus var. albiflorus K000346042 holotype
    May 6, 1985 Wingfield, R. [2185], Tanzania Aponogeton abyssinicus var. albiflorus K000346043 isotype
    May 6, 1985 Adamson, J. [4354], Kenya Aponogeton abyssinicus var. cordatus K000346044 holotype

    Bibliography

    First published in Tent. Fl. Abyss. 2: 351 (1850)

    Accepted by

    • Timberlake, J.R. & Martins, E.S. (eds.) (2009). Flora Zambesiaca 12(2): 1-208. Royal Botanic Gardens, Kew.
    • Govaerts, R. (1995). World Checklist of Seed Plants 1(1, 2): 1-483, 1-529. MIM, Deurne.
    • Lye, K.A. (1989). Aponogetonaceae Flora of Tropical East Africa: 1-10.
    • van Bruggen, H.W.E. (1974). Flore d'Afrique Centrale (Zaïre - Rwanda - Burundi) Aponogetonaceae: 1-11. Jardin Botanique National de Belgique, Meise.

    Literature

    Kew Backbone Distributions

    • Edwards, S., Demissew, S. & Hedberg, I. (eds.) (1997). Flora of Ethiopia and Eritrea 6: 1-586. The National Herbarium, Addis Ababa University, Ethiopia & The Department of Systematic Botany, Upps.

    Flora of Tropical East Africa

    • Lye in Lidia 1: 67 (1986).
    • H. Bruggen in Bibl. Bot. 33,137: 60 (1985).
    • H. Bruggen in Flore d'Afrique Centrale: 9, photo. facing p. 1 (1974).
    • Lye in A.D.Q. Agnew, Upland Kenya Wild Flowers p. 650, fig. p. 651 (1974).
    • H. Bruggen in Bulletin du Jardin Botanique National de Belgique 43: 221, fig. 7/12 (1973)
    • Cufod., Enumeratio Plantarum Aethiopiae Spermatophyta (Supplement in Bull. Jard. Bot. Nat. Belg.) p. 1202 (1968).
    • A. Bennett in Flora of Tropical Africa 8: 218 (1901).
    • A. Rich., Tent. Fl. Abyss. 2: 351 (1851).

    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