1. Family: Poaceae Barnhart
    1. Genus: Pariana Aubl.
      1. Pariana sociata Swallen

        This species is accepted, and its native range is N. Brazil (to Maranhão).

    [GB]
    Habit
    Perennial. Rhizomes short. Culms geniculately ascending; 40-60 cm long. Leaves cauline. Leaf-sheaths keeled. Leaf-sheath oral hairs setose. Ligule an eciliate membrane; 0.5 mm long; truncate. Leaf-blade base with a brief petiole-like connection to sheath; petiole 0.1 cm long; petiole pubescent. Leaf-blades elliptic; 8.5-12 cm long; 17-35 mm wide. Leaf-blade surface scaberulous; rough adaxially; puberulous; hairy abaxially. Leaf-blade margins serrulate. Leaf-blade apex acuminate.
    Inflorescences
    Monoecious; with male and female spikelets in the same inflorescence. Synflorescence on a separate leafless culm. Inflorescence composed of racemes. Racemes 1; single; erect; multilateral; 7-8 cm long; 10-13 mm wide. Rhachis fragile at the nodes. Rhachis internodes linear. Sexes mixed (in a cluster at each node). Spikelets subtended by an involucre. Fertile spikelets sessile; 1 in the cluster. Male spikelets pedicelled; 5 in a cluster. Involucre composed of imperfect spikelets; with pedicels forming a cup; oblong. Pedicels fused to each other; united along margins; oblong; flattened; 4 mm long; pubescent; tip rectangular.
    Fertile
    Spikelets comprising 1 fertile florets; without rhachilla extension. Spikelets ovate; laterally compressed; compressed slightly; 6 mm long; falling entire; deciduous with accessory branch structures.
    Glume
    Glumes similar; exceeding apex of florets; thinner than fertile lemma. Lower glume ovate; 6 mm long; 1 length of upper glume; chartaceous; 1-keeled; 3 -veined. Lower glume surface pubescent. Lower glume apex acute. Upper glume ovate; 6 mm long; 1.2 length of adjacent fertile lemma; chartaceous; 1-keeled; 3 -veined. Upper glume surface pubescent. Upper glume apex acute.
    Florets
    Fertile florets female. Fertile lemma ovate; 5 mm long; coriaceous; without keel. Lemma apex acute. Palea coriaceous; without keels.
    Flowers
    Lodicules 3. Anthers 2 mm long. Stigmas 2.
    Spikelets
    Male spikelets distinct from female; 1 flowered; deciduous with the fertile; ovate; 5 mm long; hairy. Male spikelet glumes 2; 2-3 mm long. Male spikelet lemma 5 mm long. Spikelets comprising 1 fertile florets; without rhachilla extension. Spikelets ovate; laterally compressed; compressed slightly; 6 mm long; falling entire; deciduous with accessory branch structures.
    Male
    Male spikelets distinct from female; 1 flowered; deciduous with the fertile; ovate; 5 mm long; hairy. Male spikelet glumes 2; 2-3 mm long. Male spikelet lemma 5 mm long.
    Distribution
    South America: western South America and Brazil.
    Reference
    Parianeae. Gr Peru 1995.

    Images

    Distribution

    Native to:

    Brazil North, Brazil Northeast

    Pariana sociata Swallen appears in other Kew resources:

    Date Reference Identified As Barcode Type Status
    Apr 18, 1996 Burchell [9194], Brazil K000947282
    Apr 2, 1996 Burchell [9007], Brazil K000947322

    First published in J. Washington Acad. Sci. 30: 76 (1940)

    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
    • Forzza, R.C. & al. (2013). Lista de Espécies da Flora do Brasil http://floradobrasil.jbrj.gov.br/2010/.

    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