1. Family: Poaceae Barnhart
    1. Genus: Panicum L.
      1. Panicum tamaulipense F.R.Waller & Morden

        This species is accepted, and its native range is Mexico (San Luis Potosí, Tamaulipas).

    [GB]
    Habit
    Perennial; caespitose. Culms erect; 50-1550 cm long. Culm-internodes distally glabrous, or hispid; with tubercle-based hairs. Leaf-sheaths glabrous on surface, or hispid; with tubercle-based hairs. Ligule a fringe of hairs; 0.8 mm long. Leaf-blades erect, or spreading; flat, or conduplicate; 10-50 cm long; 3-8 mm wide; glaucous. Leaf-blade surface glabrous.
    Inflorescences
    Inflorescence a panicle. Panicle open; pyramidal; 15-40 cm long; with spikelets clustered towards branch tips. Primary panicle branches ascending; 1-3 -nate. Panicle branches stiff. Spikelets appressed; solitary. Fertile spikelets pedicelled.
    Spikelets
    Spikelets comprising 1 basal sterile florets; 1 fertile florets; without rhachilla extension. Spikelets elliptic; dorsally compressed; acuminate; 1.8-2.2 mm long; 0.8 mm wide; falling entire.
    Fertile
    Spikelets comprising 1 basal sterile florets; 1 fertile florets; without rhachilla extension. Spikelets elliptic; dorsally compressed; acuminate; 1.8-2.2 mm long; 0.8 mm wide; falling entire.
    Glume
    Glumes dissimilar; reaching apex of florets; thinner than fertile lemma. Lower glume ovate; 0.5 length of spikelet; membranous; without keels; 5 -veined. Lower glume apex acute. Upper glume ovate; 1 length of spikelet; membranous; without keels; 7-9 -veined. Upper glume apex acute.
    Florets
    Basal sterile florets barren; without significant palea. Lemma of lower sterile floret similar to upper glume; ovate; 1 length of spikelet; membranous; 7-9 -veined; acute. Fertile lemma elliptic; dorsally compressed; 1.5-1.7 mm long; 0.6-0.8 mm wide; indurate; dark brown; shiny; without keel. Lemma margins involute. Palea involute; indurate.
    Distribution
    North America: Mexico.
    Reference
    Paniceae. Waller & NMorden 2004.

    Distribution

    Native to:

    Mexico Northeast

    Panicum tamaulipense F.R.Waller & Morden appears in other Kew resources:

    First published in Syst. Bot. 8: 221 (1983)

    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.
    • 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.

    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