1. Family: Poaceae Barnhart
    1. Genus: Pariana Aubl.
      1. Pariana argentea Hollowell & Davidse

        This species is accepted, and its native range is Panama.

    [GB]
    Habit
    Perennial. Culms geniculately ascending; 20-40 cm long. Culm-internodes abbreviated and closely packed at the base; terete; thin-walled. Culm-nodes with distinct supra-nodal ridge; pallid, or purple; glabrous. Leaves cauline; 7-10 per branch. Leaf-sheaths keeled; glabrous on surface, or pubescent. Leaf-sheath oral hairs setose; spreading; 6-8 mm long. Ligule an eciliate membrane; 0.6-0.7 mm long; scarious; truncate. Leaf-blade base cuneate; with a brief petiole-like connection to sheath; petiole 0.15-0.25 cm long; petiole glabrous. Leaf-blades linear, or lanceolate; 6-12 cm long; 8-16 mm wide; mid-green and glaucous; discolorous with last colour beneath. Leaf-blade surface glabrous. Leaf-blade apex acuminate, or attenuate.
    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; 3-4.4 cm long; 10 mm wide; bearing 7 fertile spikelets on each. Rhachis fragile at the nodes. Rhachis internodes linear. Sexes mixed (in a cluster at each node). Spikelets appressed; 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; cuneate; flattened; 3.2-4 mm long; 0.66 length of fertile spikelet; ciliate.
    Fertile
    Spikelets comprising 1 fertile florets; without rhachilla extension. Spikelets ovate; laterally compressed; compressed slightly; 5.3-6.1 mm long; falling entire; deciduous with accessory branch structures.
    Glume
    Glumes similar; exceeding apex of florets; thinner than fertile lemma. Lower glume ovate; 1 length of upper glume; chartaceous; 1-keeled. Lower glume primary vein scaberulous. Lower glume apex acute. Upper glume ovate; 1.1 length of adjacent fertile lemma; chartaceous; 1-keeled. Upper glume primary vein scaberulous. Upper glume apex acute.
    Florets
    Fertile florets female. Fertile lemma ovate; 4.5-5.2 mm long; coriaceous; without keel. Lemma apex acute. Palea 1 length of lemma; coriaceous; without keels.
    Flowers
    Lodicules 3; obovate; 1.5 mm long; membranous. Anthers 9-15; 2.6-2.8 mm long; yellow. Filaments united in a tube. Stigmas 2.
    Spikelets
    Male spikelets distinct from female; 1 flowered; ovate; 7.2-8.3 mm long. Male spikelet glumes 2. Male spikelet lemma 3.5-4 mm long; 2-3 -veined. Spikelets comprising 1 fertile florets; without rhachilla extension. Spikelets ovate; laterally compressed; compressed slightly; 5.3-6.1 mm long; falling entire; deciduous with accessory branch structures.
    Male
    Male spikelets distinct from female; 1 flowered; ovate; 7.2-8.3 mm long. Male spikelet glumes 2. Male spikelet lemma 3.5-4 mm long; 2-3 -veined.
    Distribution
    South America: Mesoamericana.
    Reference
    Parianeae. Hollowell & Davidse 1994.

    Distribution

    Native to:

    Panamá

    Pariana argentea Hollowell & Davidse appears in other Kew resources:

    First published in Novon 2: 98 (1992)

    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.
    • Davidse, G. & al. (eds.) (1994). Flora Mesoamericana 6: 1-543. Universidad Nacional Autónoma de México, México, D.F.

    Literature

    Kew Backbone Distributions
    • Davidse, G. & al. (eds.) (1994). Flora Mesoamericana 6: 1-543. Universidad Nacional Autónoma de México, México, D.F.

    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 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