1. Family: Polygonaceae Juss.
    1. Genus: Rumex L.
      1. Rumex abyssinicus Jacq.

        This species is accepted, and its native range is Nigeria to Eritrea and S. Tropical Africa, Madagascar.

    [FTEA]

    Polygonaceae, R. A. Graham. Flora of Tropical East Africa. 1958

    Habit
    A large, very stout, perennial herb, up to 4 m. tall.
    Stem
    Stems glabrous, green or reddish-green, up to 3 cm. wide at the base.
    Leaves
    Leaves petiolate, large, up to ± 30 × 20 cm., lush, glabrous or papillose, usually triangular-hastate but varying to sagittate, scutate, sublinear, or more rarely ovate; the lobes spreading, more rarely directed forward; apically acute to very obtuse; with a variably deep and wide basal sinus; primary nerves palmately arranged.
    Petiole
    Petioles long, up to 14 cm., those of the lower leaves often exceeding the lamina.
    Inflorescences
    Inflorescence a large, much branched, leafless panicle, oblong or pyramidal in outline, up to 40 cm. long, 25 cm. or more broad.
    Flowers
    Flowers borne in fascicles, on filiform pedicels up to 5 mm. long.
    Tepal
    Outer tepals ± ovate, 1.5 mm. long, membranous and brown, later reflexing. Inner tepals wing-like, accrescent, elongate-rounded, ± pellucid, reticulately veined, green becoming reddish-brown or brown, 5.5 × 4.5 mm. (7 × 7 mm., fide Rech. f.), with a basal sinus up to 1 mm. deep, and bearing a small reflexed protuberance at the base.
    Fruits
    Nut acutely trigonous, 2.25–3 × 2 mm., shining, light brown or dark with lighter angles.
    Figures
    Fig. 2/3–6, p. 6.
    Habitat
    Upland grassland, margins of upland rain-forest & upland secondary bushland; 750–3300 m.
    Distribution
    K3 K4 K6 T1 T2 T3 T4 T6 T7 T8 U1 U2 U4 widely spread in the highlands of tropical Africa,
    [FWTA]

    Polygonaceae, Hutchinson and Dalziel. Flora of West Tropical Africa 1:1. 1954

    Habit
    Herb with stout perennial rootstock, 1 in. diam.; stems annual, up to several feet high.
    [FZ]

    Flora Zambesiaca. Vol. 9, Part 3. Polygonaceae-Myriaceae. Pope GV, Polhill RM, Martins ES. 2006.

    Type
    Type a cultivated plant from Ethiopia.
    Leaves
    Leaf lamina 6–18(34) × 5–16(29) cm, usually triangular-hastate, sometimes sagittate, scutate, sublinear or more rarely ovate; acute or subacute at the apex, hastate, subcordate or subobtuse at the base, with a variably deep and wide basal sinus, glabrous or undersurface ± pubescent; primary nerves 5–7, palmately arranged; petiole up to 14 cm long, those of the lower leaves often exceeding the lamina Leaf lamina 6–18(34) × 5–16(29) cm, usually triangular-hastate, sometimes sagittate, scutate, sublinear or more rarely ovate; acute or subacute at the apex, hastate, subcordate or subobtuse at the base, with a variably deep and wide basal sinus, glabrous or undersurface ± pubescent; primary nerves 5–7, palmately arranged; petiole up to 14 cm long, those of the lower leaves often exceeding the lamina.
    Ocrea
    Ocrea membranous, 2–3.5 cm long, striate Ocrea membranous, 2–3.5 cm long, striate.
    Flowers
    Flowers hermaphrodite or polygamous, pedicellate, borne in fascicles in leafless terminal panicles; panicles ± branched, up to 30–50 × 25–35 cm, cylindrical or pyramidal in outline Flowers hermaphrodite or polygamous, pedicellate, borne in fascicles in leafless terminal panicles; panicles ± branched, up to 30–50 × 25–35 cm, cylindrical or pyramidal in outline.
    Perianth
    Outer perianth segments brown, 1.5 mm long, ovate-lanceolate, membranous, later reflexing; inner perianth segments green becoming reddish-brown, accrescent, 5.5–7 × 4.5–6 mm, suborbicular, cordate-emarginate at the base, rounded at the apex, entire, membranous, pellucid, strongly reticulate-veined, with a minute reflexed dorsal tubercle near the base Outer perianth segments brown, 1.5 mm long, ovate-lanceolate, membranous, later reflexing; inner perianth segments green becoming reddish-brown, accrescent, 5.5–7 × 4.5–6 mm, suborbicular, cordate-emarginate at the base, rounded at the apex, entire, membranous, pellucid, strongly reticulate-veined, with a minute reflexed dorsal tubercle near the base.
    Stamens
    Stamens 6; filaments 1.5 mm long, filiform; anthers 1 × 0.3 mm, oblong Stamens 6; filaments 1.5 mm long, filiform; anthers 1 × 0.3 mm, oblong.
    Ovary
    Ovary 1.5 × 1 mm, trigonous; style very short
    Fruits
    Nut pale or dark brown, smooth and shiny, 2.5–3 × 1.8–2 mm, sharply trigonous. Nut pale or dark brown, smooth and shiny, 2.5–3 × 1.8–2 mm, sharply trigonous.
    Ecology
    Common in moist shady situations, disturbed ground, grasslands, roadsides and dambos; 800–2250 m.
    Distribution
    North to Eritrea and west to Nigeria, also in Madagascar. MOZ N Mozambique Malawi ZAM N, ZAM W, ZAM C, ZAM E, MAL N, MAL C, MAL S Zambia
    Habit
    A large very stout perennial herb with napiform roots. A large very stout perennial herb with napiform roots
    Stem
    Stems green or reddish-green, erect, up to 4 m tall, glabrous, hollow, striate. Stems green or reddish-green, erect, up to 4 m tall, glabrous, hollow, striate
    Pistil
    Ovary 1.5 × 1 mm, trigonous; style very short.

    Images

    Distribution

    Native to:

    Burundi, Cameroon, Eritrea, Ethiopia, Gabon, Gulf of Guinea Is., Kenya, Madagascar, Malawi, Mozambique, Nigeria, Rwanda, Sudan, Tanzania, Uganda, Zambia, Zaïre

    Introduced into:

    Angola, Central African Repu, Réunion

    Rumex abyssinicus Jacq. appears in other Kew resources:

    Date Reference Identified As Barcode Type Status
    Nov 1, 2003 Cheek, M. [9459], Cameroon K000198105
    Nov 1, 2003 Pollard, B.J. [647], Cameroon K000198129
    Nov 1, 2003 Pollard, B.J. [462], Cameroon K000198131
    Nov 1, 2003 Pollard, B.J. [462], Cameroon K000198132
    Nov 1, 2003 Ghogue, J.-P. [59], Cameroon K000198123
    Nov 1, 2003 Biye, E. [102], Cameroon K000198130
    May 1, 1999 Cheek, M. [8443], Cameroon K000746940
    May 1, 1999 Buzgo, M. [650], Cameroon K000746941
    21946.000
    Bullock, A.A. [3934], Tanzania 18118.000
    Mann, G. [1217], Cameroon K000244103 isotype
    Mann, G. [1217], Cameroon K000244104 isotype
    Mann, G. [1978], Cameroon K000244105
    Schimper [514], Ethiopia K000244106 isotype
    Harris, T. [445], Mozambique K000613881
    Tiyoy, L.M. [1389], Uganda K000449607

    First published in Hort. Bot. Vindob. 3: 48 (1777)

    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.
    • Figueiredo, E. & Smith, G.F. (2008). Plants of Angola Strelitzia 22: 1-279. National Botanical Institute, Pretoria.
    • Pope, G.V., Polhill, R.M. & Martins, E.S. (eds.) (2006). Flora Zambesiaca 9(3): 1-277. Royal Botanic Gardens, Kew.
    • Sosef, M.S.M. & al. (2006). Check-list des plantes vasculaires du Gabon Scripta Botanica Belgica 35: 1-438.
    • Edwards, S., Tadesse, M., Demissew, S. & Hedberg, I. (eds.) (2000). Flora of Ethiopia and Eritrea 2(1): 1-532. The National Herbarium, Addis Ababa University, Ethiopia & The Department of Systematic Botany, Upps.
    • Bosser, J. & al. (eds.) (1994). Flore des Mascareignes 136-148: 1. IRD Éditions, MSIRI, RBG-Kew, Paris.
    • Troupin, G. (ed.) (1978). Flora du Rwanda 1: 1-413. Musee Royal de l'Afrique Centrale.
    • Boulvert, Y. (1977). Catalogue de la Flore de Centrafrique 2(1): 1-85. ORSTROM, Bangui.
    • Exell, A.W. (1973). Angiosperms of the islands of the gulf of Guinea (Fernando Po, Príncipe, S.Tomé, and Annobon) Bulletin of the British Museum (Natural History). Botany 4: 325-411.
    • Lewalle, J. (1970). Liste floristique et répartition altitudinale de la flore du Burundi occidental: 1-84. Université officielle de Bujumbura.
    • Graham, R.A. (1958). Flora of Tropical East Africa, Polygonaceae: 1-40.
    • 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

    Flora of West Tropical Africa
    • —F.T.A. 6, 1: 114.
    Flora Zambesiaca
    • Fl. Gabon 7: 8 (1963).
    • F.T.E.A., Polygonaceae: 7, fig. 2/3–6 (1958).
    • Bot. Not. Suppl., vol. 3, 3: 29 (1954).
    • F.W.T.A., ed. 2, 1: 139 (1954).
    • Mem. New York Bot. Gard. 9: 57 (1954).
    • Fl. Madagascar, fam. 65, Polygonacées: 4 (1953).
    • F.C.B. 1: 398 (1948).
    • De Wildeman & Staner, Contrib. Fl. Katanga., Suppl. 5: 19 (1933).
    • Repert. Spec. Nov. Regni Veg. Beih. 40 [Fl. Deutsch-Ostafrika], part 2: 197 (1932).
    • De Wildeman, Pl. Bequaert. 1: 201 (1922); 5: 271 (1931).
    • R.E. Fries, Wiss. Ergebn. Schwed. Rhod.-Kongo-Exped.: 28 (1914).
    • Ann. Mus. Congo, Sér. V, Bot. [Études Fl. Bas-Moyen-Congo] 3: 185 (1910).
    • F.T.A. 6, 1: 114 (1909).
    • Ann. Mus. Congo, Sér. V, Bot. [Études Fl. Bas-Moyen-Congo] 2: 242 (1908).
    • Hiern, Cat. Afr. Pl. Welw. 1, 4: 905 (1900).
    • von Götzen, Durch Afrika von O. nach W.: 376 (1895).
    • Hort. Bot. Vindob. 3: 48, t. 93 (1776).
    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.
    • Figueiredo, E. & Smith, G.F. (2008). Plants of Angola Strelitzia 22: 1-279. National Botanical Institute, Pretoria.
    • Pope, G.V., Polhill, R.M. & Martins, E.S. (eds.) (2006). Flora Zambesiaca 9(3): 1-277. Royal Botanic Gardens, Kew.
    • Sosef, M.S.M. & al. (2006). Check-list des plantes vasculaires du Gabon Scripta Botanica Belgica 35: 1-438.
    • Edwards, S., Tadesse, M., Demissew, S. & Hedberg, I. (eds.) (2000). Flora of Ethiopia and Eritrea 2(1): 1-532. The National Herbarium, Addis Ababa University, Ethiopia & The Department of Systematic Botany, Upps.
    • Bosser, J. & al. (eds.) (1994). Flore des Mascareignes 136-148: 1. IRD Éditions, MSIRI, RBG-Kew, Paris.
    • Troupin, G. (ed.) (1978). Flora du Rwanda 1: 1-413. Musee Royal de l'Afrique Centrale.
    • Boulvert, Y. (1977). Catalogue de la Flore de Centrafrique 2(1): 1-85. ORSTROM, Bangui.
    • Exell, A.W. (1973). Angiosperms of the islands of the gulf of Guinea (Fernando Po, Príncipe, S.Tomé, and Annobon) Bulletin of the British Museum (Natural History). Botany 4: 325-411.
    • Lewalle, J. (1970). Liste floristique et répartition altitudinale de la flore du Burundi occidental: 1-84. Université officielle de Bujumbura.
    • Graham, R.A. (1958). Flora of Tropical East Africa, Polygonaceae: 1-40.
    • 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.
    Flora of Tropical East Africa
    • Keay in Flora of West Tropical Africa, ed. 2, 1: 139 (1954).
    • Rech. f. in Bot. Not., Suppl. 3 (3): 29 (1954).
    • Robyns, Flore des Spermatophytes du Parc National Albert 1: 112 (1948).
    • Robyns, Flore du Congo Belge et du Ruanda-Urundi, 1: 398 (1948).
    • Baker & C.H. Wright in Flora of Tropical Africa 6 (1): 114(1909).
    • Jacq., Hort. Vindob. 3: 48, tab. 93 (1776).

    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

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

    Herbarium Catalogue Specimens
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    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 2019. 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 2019. 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