1. Family: Poaceae Barnhart
    1. Genus: Acritochaete Pilg.
      1. Acritochaete volkensii Pilg.

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

    [FTEA]

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

    Habit
    Straggling annual, decumbent at the base and rooting at the lower nodes; culms weak, 30–60 cm. high.
    Leaves
    Leaf-blades 3–14 cm. long, 4–15 mm. wide.
    Inflorescences
    Inflorescence of 2–4 distant racemes, these 3–9 cm. long, loose.
    Spikelets
    Spikelets 5–6.5 mm. long; lower glume 0.4–1.5 mm. long; upper glume and lower lemma bearing a few tubercle-based bristles and each tapering to a tangled awn 10–20 mm. long; upper lemma with or without an awn-point up to 2 mm. long.
    Figures
    Fig. 149.
    Habitat
    In shade of upland evergreen and bamboo forest; 2300–3000 m.
    Distribution
    K3 K4 T2 T7 U2 U3
    [GB]
    Habit
    Annual; culms solitary. Culms decumbent; 30-60 cm long; rooting from lower nodes. Ligule an eciliate membrane; 1 mm long. Leaf-blades linear to lanceolate; 3-14 cm long; 4-15 mm wide. Leaf-blade surface glabrous.
    Inflorescences
    Inflorescence composed of racemes. Racemes 2-4; borne along a central axis; distant; unilateral; 3-9 cm long. Central inflorescence axis 5-15 cm long. Rhachis angular. Spikelet packing adaxial; irregular. Spikelets ascending; solitary. Fertile spikelets pedicelled.
    Spikelets
    Spikelets comprising 1 basal sterile florets; 1 fertile florets; without rhachilla extension. Spikelets lanceolate; dorsally compressed; 5-6.5 mm long; falling entire.
    Fertile
    Spikelets comprising 1 basal sterile florets; 1 fertile florets; without rhachilla extension. Spikelets lanceolate; dorsally compressed; 5-6.5 mm long; falling entire.
    Glume
    Glumes dissimilar; shorter than spikelet; thinner than fertile lemma. Lower glume ovate; 0.5-1.5 mm long; 0.1-0.25 length of spikelet; membranous; without keels; 0 -veined. Lower glume lateral veins absent. Lower glume apex obtuse. Upper glume lanceolate; 4.5-5.5 mm long; 1 length of spikelet; membranous; without keels; 3 -veined. Upper glume surface setose; with tubercle-based hairs. Upper glume apex acuminate; awned; 1 -awned. Upper glume awn 10-20 mm long.
    Florets
    Basal sterile florets barren; without significant palea. Lemma of lower sterile floret similar to upper glume; lanceolate; 1 length of spikelet; membranous; setose; with tubercle-based hairs; acuminate; awned. Awn of lower sterile floret flexuous (tangled); 10-30 mm long. Fertile lemma lanceolate; laterally compressed; 4.5-5.5 mm long; chartaceous; much thinner on margins; without keel; 5 -veined. Lemma margins flat; covering most of palea. Lemma apex acuminate; muticous, or awned; 1 -awned. Principal lemma awn 1-2 mm long overall. Palea chartaceous; without keels.
    Fruits
    Caryopsis with adherent pericarp; oblong. Disseminule comprising a spikelet.
    Distribution
    Africa: west tropical, west-central tropical, northeast tropical, and east tropical.
    Reference
    Paniceae. FW 1995.
    [FWTA]

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

    Habit
    Perennial
    Stem
    Weak trailing culms up to 1 m. long
    Ecology
    Mountains.

    Images

    Distribution

    Native to:

    Burundi, Cameroon, Ethiopia, Gulf of Guinea Is., Kenya, Nigeria, Sudan, Tanzania, Uganda, Zaïre

    Acritochaete volkensii Pilg. appears in other Kew resources:

    Date Reference Identified As Barcode Type Status
    Jun 1, 1998 Kamundi, D. [610], Cameroon K000339478
    Volkens [1278], Tanzania K000281570 isotype

    First published in Bot. Jahrb. Syst. 32: 54 (1902)

    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.
    • 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.
    • Ndabaneze, P. (1989). Catalogue des Graminées du Burundi Lejeunia; Revue de Botanique, n.s., 132: 1-127.
    • Clayton, W.D. & Renvoize, S.A. (1982). Gramineae Flora of Tropical East Africa 3: 451-898.
    • Hepper, F.N. (ed.) (1972). Flora of West Tropical Africa, ed. 2, 3(2): 277-574.

    Literature

    Flora of West Tropical Africa
    • in Engl., Bot. Jahrb. 32: 53 (1903).
    Kew Backbone Distributions
    • 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.
    • Ndabaneze, P. (1989). Catalogue des Graminées du Burundi Lejeunia; Revue de Botanique, n.s., 132: 1-127.
    • Clayton, W.D. & Renvoize, S.A. (1982). Gramineae Flora of Tropical East Africa 3: 451-898.
    • Hepper, F.N. (ed.) (1972). Flora of West Tropical Africa, ed. 2, 3(2): 277-574.
    Flora of Tropical East Africa
    • Clayton in Flora of West Tropical Africa, ed. 2, 3: 448 (1972).
    • D.M. Napper, Grasses of Tanganyika: 80 (1965).
    • K.W. Harker & D.M. Napper, An Illustrated Guide to the Grasses of Uganda p. 13 (1960).
    • A.V. Bogdan, A Revised List of Kenya Grasses p. 47 (1958).
    • F. W. Andr., The Flowering Plants of the Sudan 3: 385 (1956).
    • Robyns, Flore des Spermatophytes du Parc National Albert 3: 79 (1955).
    • Eggeling, Ann. list grasses Ug.: 1 (1947).
    • Stapf in Flora of Tropical Africa 9: 481 (1919).
    • Pilg. in A. Engler, Botanische Jahrbücher für Systematik, Pflanzengeschichte und Pflanzengeographie 32: 54 (1902).

    Sources

    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 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