1. Family: Poaceae Barnhart
    1. Genus: Isachne R.Br.
      1. Isachne angolensis Rendle

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

    [FZ]

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

    Habit
    Rambling perennial.
    Culms
    Culms 20–40 cm. high, ascending from a prostrate base.
    Leaf lamina
    Leaf laminae 3–10 cm. long, 2–4 mm. wide, broadly linear.
    Inflorescences
    Panicle 4–15 cm. long, the spikelets condensed about the primary branches.
    Spikelets
    Spikelets 1.5–2 mm. long, elliptic, the florets bisexual and contiguous.
    Glume
    Glumes a little shorter than spikelet, glabrous.
    Lemma
    Lemmas narrowly elliptic, the inferior a little larger than superior, thinly coriaceous, glabrous, acute in side view.
    [GB]
    Habit
    Perennial. Rhizomes elongated. Culms decumbent, or prostrate; 20-40 cm long; rooting from lower nodes. Ligule a fringe of hairs; 1-2 mm long. Leaf-blades 3-10 cm long; 2-4 mm wide. Leaf-blade surface scaberulous.
    Inflorescences
    Inflorescence a panicle. Panicle open; ovate; 4-15 cm long; 1.5-4 cm wide; contracted about primary branches. Spikelets solitary. Fertile spikelets pedicelled. Pedicels filiform; 0.5-1.5 mm long.
    Spikelets
    Spikelets comprising 2 fertile florets; without rhachilla extension. Spikelets elliptic; dorsally compressed; 1.5-2 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 elliptic; dorsally compressed; 1.5-2 mm long; breaking up at maturity; disarticulating below each fertile floret. Rhachilla internodes suppressed between florets.
    Glume
    Glumes deciduous; similar; shorter than spikelet; thinner than fertile lemma. Lower glume ovate; 1.2-1.8 mm long; 1 length of upper glume; 0.8-0.9 length of spikelet; membranous; much thinner on margins; without keels; 5-7 -veined. Lower glume surface puberulous; hairy above (tip). Lower glume apex obtuse. Upper glume ovate; 1.2-1.8 mm long; membranous; with hyaline margins; without keels; 5-7 -veined. Upper glume apex obtuse.
    Florets
    Fertile florets all alike. Fertile lemma elliptic; 1.5-2 mm long; coriaceous; without keel; 5-7 -veined. Lemma lateral veins obscure. Lemma surface glabrous. Lemma margins involute. Lemma apex obtuse. Palea coriaceous; 2 -veined.
    Flowers
    Anthers 3; 1 mm long.
    Fruits
    Caryopsis with adherent pericarp; obovoid; 0.5 mm long; dark brown.
    Distribution
    Africa: west tropical, west-central tropical, and southern tropical.
    Reference
    Isachneae. FTA.
    [FWTA]

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

    Habit
    Weakly erect perennial 30–45 cm. high
    Ecology
    Damp shady places.

    Images

    Distribution

    Native to:

    Angola, Cameroon, Congo, Malawi, Nigeria, Zambia

    Isachne angolensis Rendle appears in other Kew resources:

    Date Reference Identified As Barcode Type Status
    Welwitsch [7499], Angola K000281059
    Welwitsch [7499], Angola K000281058 Unknown type material

    First published in W.P.Hiern, Cat. Afr. Pl. 2: 166 (1899)

    Accepted by

    • Onana, J.M. (2011). The vascular plants of Cameroon a taxonomic checklist with IUCN assessments: 1-195. National herbarium of Cameroon, Yaoundé.
    • Figueiredo, E. & Smith, G.F. (2008). Plants of Angola Strelitzia 22: 1-279. National Botanical Institute, Pretoria.
    • Clayton, W.D., Harman, K.T. & Williamson, H. (2006). World Grass Species - Synonymy database The Board of Trustees of the Royal Botanic Gardens, Kew.
    • Sita, P. & Moutsambote, J.-M. (2005). Catalogue des plantes vasculaires du Congo, ed. sept. 2005: 1-158. ORSTOM, Centre de Brazzaville.
    • Clayton, W.D. (1989). Flora Zambesiaca 10(3): 1-231. Royal Botanic Gardens, Kew.
    • Hepper, F.N. (ed.) (1972). Flora of West Tropical Africa, ed. 2, 3(2): 277-574.

    Literature

    Flora of West Tropical Africa
    • Cat. Welw. 2: 166 (1899).
    Kew Backbone Distributions
    • Figueiredo, E. & Smith, G.F. (2008). Plants of Angola Strelitzia 22: 1-279. National Botanical Institute, Pretoria.
    • Sita, P. & Moutsambote, J.-M. (2005). Catalogue des plantes vasculaires du Congo, ed. sept. 2005: 1-158. ORSTOM, Centre de Brazzaville.
    • Hepper, F.N. (ed.) (1972). Flora of West Tropical Africa, ed. 2, 3(2): 277-574.

    Sources

    Flora Zambesiaca
    Flora Zambesiaca
    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