1. Family: Poaceae Barnhart
    1. Genus: Panicum L.
      1. Panicum macrospermum (Gould) Espejo & López-Ferr.

        This species is accepted, and its native range is NE. Mexico.

    [GB]
    Habit
    Perennial. Rootstock evident. Culms erect; 50-80 cm long; 4-6 -noded. Leaf-sheaths hispid; outer margin hairy. Ligule a ciliolate membrane. Leaf-blade base cordate. Leaf-blades lanceolate; 7-15 cm long; 10-15 mm wide. Leaf-blade surface hispid; hairy on both sides.
    Inflorescences
    Inflorescence a panicle. Peduncle hispid above. Panicle open; ovate; effuse; 13-18 cm long; with spikelets clustered towards branch tips. Panicle axis hispid. Panicle branches capillary; hispid. Spikelets appressed; solitary. Fertile spikelets pedicelled.
    Spikelets
    Spikelets comprising 1 basal sterile florets; 1 fertile florets; without rhachilla extension. Spikelets elliptic; dorsally compressed; 3.8-4.2 mm long; falling entire.
    Fertile
    Spikelets comprising 1 basal sterile florets; 1 fertile florets; without rhachilla extension. Spikelets elliptic; dorsally compressed; 3.8-4.2 mm long; falling entire.
    Glume
    Glumes dissimilar; reaching apex of florets; thinner than fertile lemma. Lower glume ovate; 2-3 mm long; 0.5-0.7 length of spikelet; membranous; without keels. Lower glume apex acute. Upper glume elliptic; 1 length of spikelet; membranous; without keels. Upper glume surface puberulous. Upper glume apex obtuse.
    Florets
    Basal sterile florets barren; without significant palea. Lemma of lower sterile floret similar to upper glume; elliptic; 1 length of spikelet; membranous; puberulous. Fertile lemma elliptic; dorsally compressed; 3.8-4.2 mm long; indurate; without keel. Lemma margins involute. Palea involute; indurate.
    Distribution
    North America: Mexico.
    Reference
    Paniceae. Gould 2004.

    Distribution

    Native to:

    Mexico Northeast

    Panicum macrospermum (Gould) Espejo & López-Ferr. appears in other Kew resources:

    First published in Acta Bot. Mex. 51: 62 (2000)

    Accepted by

    • Clayton, W.D., Harman, K.T. & Williamson, H. (2006). World Grass Species - Synonymy database The Board of Trustees of the Royal Botanic Gardens, Kew.

    Literature

    Kew Backbone Distributions
    • Dávila, P., Mejia-Saulés, M.T., Gómez-Sánchez, N., Valdés-Reyna, J., Ortíz, J.J., Morín, C., Castrejón, J. & Ocampo, A. (2006). Catálogo de las Gramíneas de México: 1-671. CONABIO, México city.

    Sources

    GrassBase - The Online World Grass Flora
    http://creativecommons.org/licenses/by-nc-sa/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