1. Family: Poaceae Barnhart
    1. Genus: Guaduella Franch.
      1. Guaduella humilis Clayton

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

    [GB]
    Habit
    Perennial. Rhizomes short; pachymorph; knotty. Culms geniculately ascending; 8-14 cm long; firm. Culm-nodes pubescent. Lateral branches lacking, or sparse. Branch complement one; solitary. Leaves cauline; 6-20 per branch. Leaf-sheaths longer than adjacent culm internode; pilose. Leaf-sheath oral hairs bearded. Ligule a ciliolate membrane; 0.5 mm long; truncate. Leaf-blade base broadly rounded; with a brief petiole-like connection to sheath. Leaf-blades elliptic, or oblong; 2-4 cm long; 6-12 mm wide; light green. Leaf-blade venation with distinct cross veins. Leaf-blade surface pilose; hairy on both sides. Leaf-blade apex acute.
    Inflorescences
    Synflorescence on a separate leafless culm. Inflorescence comprising only a few spikelets; comprising 1-2 fertile spikelets. Spikelets solitary. Fertile spikelets pedicelled.
    Spikelets
    Spikelets comprising 4-7 fertile florets; with diminished florets at the apex. Spikelets elliptic; laterally compressed; 10-20 mm long; breaking up at maturity; disarticulating below each fertile floret. Rhachilla internodes obscured by lemmas.
    Fertile
    Spikelets comprising 4-7 fertile florets; with diminished florets at the apex. Spikelets elliptic; laterally compressed; 10-20 mm long; breaking up at maturity; disarticulating below each fertile floret. Rhachilla internodes obscured by lemmas.
    Glume
    Glumes persistent; similar; shorter than spikelet. Lower glume ovate; 3-4 mm long; 0.6-0.8 length of upper glume; herbaceous; without keels; 3 -veined. Lower glume surface puberulous. Lower glume margins ciliate. Lower glume apex acute. Upper glume ovate; 5 mm long; 0.9 length of adjacent fertile lemma; herbaceous; without keels; 5-9 -veined. Upper glume margins ciliate. Upper glume apex acute; mucronate.
    Florets
    Fertile florets divergent. Fertile lemma ovate; 5.5 mm long; herbaceous; without keel; 11 -veined. Lemma surface scaberulous; pubescent; hairy below. Lemma margins ciliolate; hairy above. Lemma apex obtuse. Palea 1.2 length of lemma; 4 -veined. Palea keels winged; narrowly winged; ciliolate. Palea apex truncate. Apical sterile florets resembling fertile though underdeveloped.
    Flowers
    Lodicules 3; obovate; 1 mm long; membranous; veined; obtuse. Anthers 6. Stigmas 2; papillose. Ovary pubescent all over.
    Distribution
    Africa: west tropical and west-central tropical.
    Reference
    Bambuseae. WDC.

    Images

    Distribution

    Native to:

    Cameroon, Nigeria

    Guaduella humilis Clayton appears in other Kew resources:

    Date Reference Identified As Barcode Type Status
    Jan 1, 1994 Thomas, D.W. [9759], Cameroon K000437989
    May 1, 1975 Letouzey, R. [13595], Cameroon K000181826
    Nov 1, 1962 Coombe, D. E. [173], Nigeria K000345509 holotype
    Nov 1, 1962 Coombe, D. E. [173], Nigeria K000345510 Unknown type material
    Coombe, D.E. [173], Nigeria 5586.000 Unknown type material

    First published in Kew Bull. 16: 248 (1962)

    Accepted by

    • 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.
    • Hepper, F.N. (ed.) (1972). Flora of West Tropical Africa, ed. 2, 3(2): 277-574.

    Literature

    Flora of West Tropical Africa
    • in Kew Bull. 16: 248 (1962). Creeping plant of forest shade.
    Kew Backbone Distributions
    • Onana, J.M. (2011). The vascular plants of Cameroon a taxonomic checklist with IUCN assessments: 1-195. National herbarium of Cameroon, Yaoundé.
    • Hepper, F.N. (ed.) (1972). Flora of West Tropical Africa, ed. 2, 3(2): 277-574.

    Sources

    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 2018. 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 2018. 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