1. Family: Poaceae Barnhart
    1. Trachypogon Nees

      1. This genus is accepted, and its native range is Tropical & Subtropical America, Tropical & S. Africa, Madagascar.

    [GB]

    nonem

    Habit
    Perennial. Culms erect (1/1); 30-81.25-200 cm long; firm (3), or wiry (1). Leaf-sheath auricles absent, or erect (1). Ligule an eciliate membrane. Leaf-blades filiform (2), or linear (3).
    Inflorescences
    Inflorescence composed of racemes. Racemes single, or paired (2), or digitate (2). Rhachis subterete. Rhachis internodes linear. Rhachis internode tip oblique; flat. Spikelets in pairs. Fertile spikelets pedicelled; 1 in the cluster, or 2 in the cluster (1). Companion sterile spikelets pedicelled; 0 in the cluster (1), or 1 in the cluster. Pedicels linear; tip oblique.
    Spikelets
    Companion sterile spikelets well-developed; persistent. Spikelets comprising 1 basal sterile florets; 1 fertile florets; without rhachilla extension. Spikelets linear; subterete; 6-8.375-13 mm long; falling entire; deciduous from the base, or with accessory branch structures (1). Spikelet callus linear; bearded; base pungent; attached obliquely.
    Sterile
    Companion sterile spikelets well-developed; persistent.
    Fertile
    Spikelets comprising 1 basal sterile florets; 1 fertile florets; without rhachilla extension. Spikelets linear; subterete; 6-8.375-13 mm long; falling entire; deciduous from the base, or with accessory branch structures (1). Spikelet callus linear; bearded; base pungent; attached obliquely.
    Glume
    Glumes firmer than fertile lemma. Lower glume oblong; coriaceous; without keels; 1 -veined (1/3), or 7-9 -veined (2/3). Lower glume lateral veins absent (1), or distinct (3). Lower glume surface convex (3), or grooved on either side of midvein (1); glabrous (3), or pubescent (2), or pilose (1), or villous (1).
    Florets
    Basal sterile florets male (1), or barren (3); with palea (1), or without significant palea (3). Lemma of lower sterile floret oblong; hyaline; 2 -veined (3/3); obtuse (3/3). Fertile lemma linear; hyaline; without keel; 3 -veined (3/3). Lemma apex acute; awned; 1 -awned. Principal lemma awn geniculate; limb glabrous (3), or puberulous (1). Column of lemma awn pubescent (1), or hirsute (1), or plumose (2). Palea absent or minute.
    Flowers
    Anthers 3 (1/1).
    Distribution
    Africa (2), or North America (1), or South America (3).
    [FTEA]

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

    Habit
    Annuals or perennials
    Leaves
    Leaf-bades linear to acicular; ligule membranous
    Inflorescences
    Inflorescence of solitary or digitate racemes, these bearing paired spikelets, the one subsessile, the other pedicelled, on a rough rhachis; internodes and pedicels linear
    Subsessile
    Subsessile spikelet ♂ or barren and awnless (rarely fertile and awned), persistent on the rhachis, otherwise resembling the pedicelled
    Spikelets
    Pedicelled spikelet hermaphrodite, narrowly oblong to terete; callus pungent; lower glume coriaceous, convex on the back, grey-brown, obtuse; lower floret reduced to a hyaline lemma; upper lemma stipitiform, passing directly into a hairy awn
    Pedicelled
    Pedicelled spikelet hermaphrodite, narrowly oblong to terete; callus pungent; lower glume coriaceous, convex on the back, grey-brown, obtuse; lower floret reduced to a hyaline lemma; upper lemma stipitiform, passing directly into a hairy awn
    Fruits
    Caryopsis terete.
    [FZ]

    Gramineae, T. A. Cope. Flora Zambesiaca 10:4. 2002

    Inflorescences
    Inflorescence of single or digitate racemes, racemes tough, with linear internodes, bearing paired spikelets, one subsessile, one pedicelled. Subsessile spikelet male or barren, awnless (sometimes fertile and awned in T. chevalieri), persistent on the rhachis.
    Spikelets
    Pedicelled spikelet bisexual, subterete, the callus pungent and obliquely attached to the internode.
    Glume
    Inferior glume coriaceous, convex, obtuse at the apex.
    Florets
    Inferior floret reduced to a hyaline lemma.
    Lemma
    Superior lemma linear, entire, with a pubescent or plumose awn.

    Images

    Distribution

    Native to:

    Angola, Argentina Northeast, Arizona, Belize, Benin, Bolivia, Botswana, Brazil North, Brazil North, Brazil Northeast, Brazil Northeast, Brazil South, Brazil South, Brazil Southeast, Brazil Southeast, Brazil West-Central, Brazil West-Central, Burkina, Burundi, Cameroon, Cape Provinces, Caprivi Strip, Central African Repu, Colombia, Congo, Costa Rica, Cuba, Ecuador, El Salvador, Ethiopia, Free State, French Guiana, Ghana, Guatemala, Guyana, Honduras, Ivory Coast, Kenya, KwaZulu-Natal, Lesotho, Madagascar, Malawi, Mali, Mexico Central, Mexico Gulf, Mexico Northeast, Mexico Southeast, Mexico Southwest, Mozambique, Namibia, New Mexico, Nicaragua, Nigeria, Northern Provinces, Panamá, Paraguay, Peru, Puerto Rico, Rwanda, Sudan, Suriname, Swaziland, Tanzania, Texas, Togo, Trinidad-Tobago, Uganda, Uruguay, Venezuela, Zambia, Zaïre, Zimbabwe

    Trachypogon Nees appears in other Kew resources:

    Date Reference Identified As Barcode Type Status
    Jan 1, 2014 Clayton, W.D. [4477], Brazil K001059033
    Jan 1, 2014 Smith, L.B. [15922], Brazil K001059386
    Jan 1, 2014 Smith, L.B. [15566], Brazil K001059387
    Jan 1, 2014 Smith, L.B. [15594], Brazil K001059388
    Jan 1, 2014 Smith, L.B. [15681], Brazil K001059389
    Jan 1, 2014 Smith, L.B. [15577], Brazil K001059391
    Jan 1, 2014 Smith, L.B. [14657], Brazil K001059029
    Jan 1, 2014 Smith, L.B. [14796], Brazil K001059030
    Jan 1, 2014 Sellow [s.n.], Brazil K001059031
    Jan 1, 2014 Klein, R.M. [12181], Brazil K001059390
    Jan 1, 2014 Dombrowski, L.T.D. [1390], Brazil K001059032
    Jan 1, 2014 Dombrowski, L.T.D. [1387], Brazil K001059143

    First published in C.F.P.von Martius, Fl. Bras. Enum. Pl. 2: 341 (1829)

    Accepted by

    • Govaerts, R.H.A. (2011). World checklist of selected plant families published update Facilitated by the Trustees of the Royal Botanic Gardens, Kew.

    Literature

    Flora of West Tropical Africa
    • F.T.A. 9: 400 (1919).
    • Agrost. Bras. 341 (1829)
    Flora Zambesiaca
    • Agrost. Bras.: 341 (1829).
    Flora of Tropical East Africa
    • Agrost. Bras.: 341 (1829)

    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

    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