1. Family: Poaceae Barnhart
    1. Genus: Isachne R.Br.
      1. Isachne mauritiana Kunth

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

    [FTEA]

    Gramineae, W. D. Clayton, S. M. Phillips & S. A. Renvoize. Flora of Tropical East Africa. 1974

    Habit
    Rambling perennial, culms 30–60 cm. high, geniculately ascending from a prostrate base rooting at the nodes.
    Leaves
    Leaf-blades linear-lanceolate to lanceolate, 7–20 cm. long, 5–17 mm. wide, glabrous, scaberulous, sparsely and stiffly pilose, or pubescent.
    Inflorescences
    Panicle broadly ovate, 10–20 cm. long, very loose and open, the branches obliquely spreading.
    Spikelets
    Spikelets obovoid, 1.2–1.8 mm. long, the florets hermaphrodite and contiguous; glumes very broadly elliptic, as long as the florets, 5–9-nerved, glabrous or with a few hairs towards the apex; lemmas broadly elliptic to subrotund, the lower a little longer than the upper, thinly coriaceous, glabrous.
    Figures
    Fig. 118.
    Habitat
    Forest shade; 1000–2600 m.
    Distribution
    Cameroun and Zaire to RhodesiaMadagascar and Mauritiusa few records from Nigeria and Ghana K3 K4 K5 K7 T1 T2 T3 T6 T7 U2 U4
    [FWTA]

    Gramineae, W. D. Clayton. Flora of West Tropical Africa 3:2. 1972

    Ecology
    In forest shade.
    [GB]
    Habit
    Perennial. Culms prostrate; 30-60 cm long; rooting from lower nodes. Ligule a fringe of hairs. Leaf-blades lanceolate; 5-20 cm long; 5-17 mm wide. Leaf-blade surface glabrous, or pubescent, or pilose.
    Inflorescences
    Inflorescence a panicle. Panicle open; ovate; effuse; 10-20 cm long. Panicle branches capillary. Spikelets solitary. Fertile spikelets pedicelled. Pedicels filiform.
    Spikelets
    Spikelets comprising 2 fertile florets; without rhachilla extension. Spikelets obovate; dorsally compressed; 1.2-1.8 mm long; breaking up at maturity; disarticulating below each fertile floret. Rhachilla internodes suppressed between florets.
    Fertile
    Spikelets comprising 2 fertile florets; without rhachilla extension. Spikelets obovate; dorsally compressed; 1.2-1.8 mm long; breaking up at maturity; disarticulating below each fertile floret. Rhachilla internodes suppressed between florets.
    Glume
    Glumes deciduous; similar; reaching apex of florets; thinner than fertile lemma. Lower glume elliptic; 1.2-1.8 mm long; 1 length of upper glume; 1 length of spikelet; membranous; without keels; 5-9 -veined. Lower glume surface glabrous, or pubescent; hairy above. Lower glume apex obtuse. Upper glume elliptic; 1.2-1.8 mm long; membranous; without keels; 5-9 -veined. Upper glume surface glabrous, or pubescent; hairy above. Upper glume apex obtuse.
    Florets
    Fertile florets all alike. Fertile lemma orbicular; 1-1.5 mm long; coriaceous; without keel; 5-7 -veined. Lemma lateral veins obscure. Lemma surface glabrous. Lemma margins involute; interlocking with palea keels. Lemma apex obtuse. Palea coriaceous; 2 -veined.
    Flowers
    Lodicules 2; cuneate; fleshy. Anthers 3; 0.6 mm long.
    Fruits
    Caryopsis with adherent pericarp; orbicular; dorsally compressed; plano-convex.
    Distribution
    Africa: west tropical, west-central tropical, northeast tropical, east tropical, southern tropical, and western Indian ocean.
    Reference
    Isachneae. FTEA.
    [FZ]

    Gramineae, W. D. Clayton. Flora Zambesiaca 10:3. 1989

    Habit
    Rambling perennial.
    Culms
    Culms 30–60 cm. high, geniculately ascending from a prostrate base rooting at the nodes.
    Leaf lamina
    Leaf laminae 5–20 cm. long, 3–17 mm. wide, linear-lanceolate to lanceolate.
    Inflorescences
    Panicle 10–20 cm. long, diffuse.
    Spikelets
    Spikelets 1.2–1.8 mm. long, obovoid, the florets bisexual and contiguous.
    Glume
    Glumes as long as spikelet, glabrous or with a few hairs towards the apex.
    Lemma
    Lemmas broadly elliptic to subrotund, the inferior a little larger than the superior, crustaceous, glabrous, obtuse.

    Images

    Distribution

    Native to:

    Burundi, Cameroon, Congo, Ghana, Gulf of Guinea Is., Kenya, Madagascar, Malawi, Mauritius, Mozambique, Nigeria, Rwanda, Réunion, Sudan, Tanzania, Uganda, Zambia, Zaïre, Zimbabwe

    Introduced into:

    Ethiopia

    Isachne mauritiana Kunth appears in other Kew resources:

    Date Reference Identified As Barcode Type Status
    Jun 1, 2001 Cheek, M. [7350], Cameroon K000107865
    Jun 1, 2001 Ryan, P. [408], Cameroon K000107864
    Greenway, P.J. [1671], Tanzania K000281054 holotype
    Greenway, P.J. [1671], Tanzania K000281053 holotype
    Bidgood, S. [5077], Tanzania K000190305
    Bidgood, S. [5578], Tanzania K000468846
    Zimmermann [1964], Tanzania K000281055

    First published in Révis. Gramin. 1: 243 (1830)

    Accepted by

    • Bosser, J. & Renvoize, S.A. (2018). Flore des Mascareignes 203: 1-276. IRD Éditions, MSIRI, RBG-Kew, Paris.
    • 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.
    • Onana, J.M. (2011). The vascular plants of Cameroon a taxonomic checklist with IUCN assessments: 1-195. National herbarium of Cameroon, Yaoundé.
    • Clayton, W.D., Harman, K.T. & Williamson, H. (2006). World Grass Species - Synonymy database The Board of Trustees of the Royal Botanic Gardens, Kew.
    • Aedo, C., Tellería, M.T. & Velayos, M. (eds.) (1999). Bases Documentales para la Flora de Guinea Ecuatorial; Plantas vascularis y hongos: 1-414. CSIC, real jardín Botánico, Madrid.
    • Hedberg, I. & Edwards, S. (eds.) (1995). Flora of Ethiopia and Eritrea 7: 1-430. The National Herbarium, Addis Ababa University, Ethiopia & The Department of Systematic Botany, Upps.
    • Clayton, W.D. (1989). Flora Zambesiaca 10(3): 1-231. Royal Botanic Gardens, Kew.
    • Ndabaneze, P. (1989). Catalogue des Graminées du Burundi Lejeunia; Revue de Botanique, n.s., 132: 1-127.
    • Troupin, G. (ed.) (1988). Flora du Rwanda 4: I-X, 1-651. Musee Royal de l'Afrique Centrale.
    • Clayton, W.D., Phillips, S.M., Renvoize, S.A. (1974). Gramineae Flora of Tropical East Africa 2: 177-449.
    • 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.
    • Hepper, F.N. (ed.) (1972). Flora of West Tropical Africa, ed. 2, 3(2): 277-574.
    • Bosser, J. (1969). Gramiées des pasturages et des cultures a Madagascar: 1-440. ORSTOM, Paris.

    Literature

    Flora of West Tropical Africa
    • Rev. Gram. 1: 243 (1830).
    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.
    • Hedberg, I. & Edwards, S. (eds.) (1995). Flora of Ethiopia and Eritrea 7: 1-430. The National Herbarium, Addis Ababa University, Ethiopia & The Department of Systematic Botany, Upps.
    • Clayton, W.D. (1989). Flora Zambesiaca 10(3): 1-231. Royal Botanic Gardens, Kew.
    • Ndabaneze, P. (1989). Catalogue des Graminées du Burundi Lejeunia; Revue de Botanique, n.s., 132: 1-127.
    • Troupin, G. (ed.) (1988). Flora du Rwanda 4: I-X, 1-651. Musee Royal de l'Afrique Centrale.
    • Clayton, W.D., Phillips, S.M., Renvoize, S.A. (1974). Gramineae Flora of Tropical East Africa 2: 177-449.
    • Hepper, F.N. (ed.) (1972). Flora of West Tropical Africa, ed. 2, 3(2): 277-574.
    • Hubbard, C.E. & Vaughan, R.E. (1940). Grasses of Mauritius and Rodriguez: 1-128. Crown Agents for the Colonies, London.
    Flora of Tropical East Africa
    • Clayton in Flora of West Tropical Africa, ed. 2, 3: 420 (1972).
    • Kunth, Rév. Gram. 1: 243, t. 33 (1830).

    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

    GrassBase - The Online World Grass Flora
    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