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  1. Family: Poaceae Barnhart
    1. Genus: Arrhenatherum P.Beauv.
      1. Arrhenatherum album (Vahl) Clayton

        This species is accepted, and its native range is W. Medit., Cyprus.

    [GB]
    Habit
    Perennial; caespitose. Stolons present. Culms 50-125 cm long; swollen at the base; forming an ovoid corm, or moniliform corms. Culm-nodes glabrous, or bearded. Leaf-sheaths glabrous on surface, or hirsute. Ligule an eciliate membrane; 1-5 mm long; lacerate. Leaf-blades 20-40 cm long; 4-8 mm wide. Leaf-blade surface scabrous; glabrous, or hirsute.
    Inflorescences
    Inflorescence a panicle. Panicle open; linear; dense; 10-35 cm long. Spikelets solitary. Fertile spikelets pedicelled.
    Spikelets
    Spikelets comprising 1 basal sterile florets; 1 fertile florets; with a barren rhachilla extension. Spikelets oblong; laterally compressed; 9-12 mm long; breaking up at maturity; disarticulating below each fertile floret. Rhachilla internodes elongated between glumes and elongated below proximal fertile floret. Rhachilla elongation 1.5-1.8 mm long (below floret). Floret callus pilose.
    Fertile
    Spikelets comprising 1 basal sterile florets; 1 fertile florets; with a barren rhachilla extension. Spikelets oblong; laterally compressed; 9-12 mm long; breaking up at maturity; disarticulating below each fertile floret. Rhachilla internodes elongated between glumes and elongated below proximal fertile floret. Rhachilla elongation 1.5-1.8 mm long (below floret). Floret callus pilose.
    Glume
    Glumes persistent; dissimilar; reaching apex of florets; thinner than fertile lemma; shiny; gaping. Lower glume lanceolate; 6-8.3 mm long; 0.66 length of upper glume; membranous; 1-keeled; 1 -veined. Lower glume primary vein scaberulous. Lower glume lateral veins absent. Lower glume apex acute. Upper glume lanceolate; 9-11 mm long; 1-1.2 length of adjacent fertile lemma; membranous; 1-keeled; 3 -veined. Upper glume primary vein scaberulous. Upper glume apex acute.
    Florets
    Basal sterile florets male; with palea; attached to and deciduous with the fertile. Lemma of lower sterile floret elliptic; 7-10.5 mm long; chartaceous; much thinner above; pilose; hairy below; dentate; 2 -fid; acute, or acuminate; awned. Awn of lower sterile floret dorsal; arising 0.1 way up back of lemma; geniculate; 15-25 mm long. Fertile lemma elliptic; 7-10.5 mm long; chartaceous; much thinner above; without keel; 7 -veined. Lemma surface pilose; hairy below. Lemma hairs 2-3 mm long. Lemma apex acuminate; muticous, or mucronate, or awned; 1 -awned. Principal lemma awn subapical; 0-5 mm long overall. Palea keels ciliolate.
    Flowers
    Anthers 3; 3.3-4.7 mm long. Ovary pubescent all over.
    Fruits
    Caryopsis with adherent pericarp; 3.5-4 mm long.
    Distribution
    Europe: southwestern. Africa: north. Asia-temperate: western Asia.
    Reference
    Aveneae. Gr Extremad 1993.

    Images

    Distribution

    Doubtfully present in:

    Madeira

    Native to:

    Algeria, Baleares, Cyprus, Morocco, Portugal, Sardegna, Spain, Tunisia

    Accepted Infraspecifics

    Synonyms

    Other Data

    Arrhenatherum album (Vahl) Clayton appears in other Kew resources:

    Date Reference Identified As Barcode Type Status
    Welwitsch, F.M.J. [435], Spain K000808559
    Lange, J. [60], Spain K000808560
    Boissier P.E.E. [s.n.], Spain K000808561
    Boissier P.E.E. [s.n.], Spain K000808562

    Bibliography

    First published in Kew Bull. 16: 250 (1962)

    Accepted by

    • Dimopoulos, P., Raus, T., Bergmeier, E., Constantinidis, T., Iatrou, G., Kokkini, S., Strid, A., & Tzanoudakis, D. (2013). Vascular plants of Greece. An annotated checklist: 1-372. Botanic gardens and botanical museum Berlin-Dahlem, Berlin and Hellenic botanical society, Athens.
    • Dobignard, D. & Chatelain, C. (2010). Index synonymique de la flore d'Afrique du nord 1: 1-455. Éditions des conservatoire et jardin botaniques, Genève.
    • Clayton, W.D., Harman, K.T. & Williamson, H. (2006). World Grass Species - Synonymy database The Board of Trustees of the Royal Botanic Gardens, Kew.
    • Meikle, R.D. (1985). Flora of Cyprus 2: 833-1970. The Bentham-Moxon Trust Royal Botanic Gardens, Kew.
    • Tutin, T.G. & al. (eds.) (1980). Flora Europaea 5: 1-452. Cambridge University Press.

    Literature

    Kew Backbone Distributions

    • von Raab-Straube, E. (ed.) (2012-continuously updated). The Euro+Med PlantBase - the information resource for Euro-Mediterranean plant diversity http://ww2.bgbm.org/EuroPlusMed/query.asp.
    • Dobignard, D. & Chatelain, C. (2010). Index synonymique de la flore d'Afrique du nord 1: 1-455. Éditions des conservatoire et jardin botaniques, Genève.
    • Tutin, T.G. & al. (eds.) (1980). Flora Europaea 5: 1-452. Cambridge University Press.

    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 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