1. Family: Poaceae Barnhart
    1. Pariana Aubl.

      1. This genus is accepted, and its native range is Central & S. Tropical America.

    [GB]

    nonem

    Habit
    Perennial. Rhizomes absent (22), or short (7), or elongated (1). Stolons absent, or present (1). Culms erect (25), or geniculately ascending (4), or arching (1); robust (1/3), or slender (2/3); 15-59.12-175.5 cm long; firm (29), or woody (1). Culm-internodes abbreviated and closely packed at the base (1/1); terete (1/1). Culm-nodes swollen (2/2); with distinct supra-nodal ridge (1/1). Lateral branches lacking (11/12), or sparse (1/12). Leaf-sheath auricles absent (26), or erect (5). Ligule an eciliate membrane (29), or a ciliolate membrane (1). Leaf-blade base with a brief petiole-like connection to sheath. Leaf-blades linear (2), or lanceolate (18), or elliptic (3), or oblong (10), or ovate (9). Leaf-blade venation without cross veins (29), or with distinct cross veins (1).
    Inflorescences
    Monoecious; with male and female spikelets in the same inflorescence. Synflorescence on the same culm as leaves (7), or on a specialized culm bearing a single leaf-blade (1), or on a separate leafless culm (22). Inflorescence composed of racemes; terminal (29), or terminal and axillary (1); subtended by an unspecialized leaf-sheath (29), or an inflated leaf-sheath (1). Racemes single; erect (27), or drooping (3); linear (22), or oblong (8); multilateral; bearing few fertile spikelets (2), or many spikelets (28); bearing 5 fertile spikelets on each (1/4), or 6 fertile spikelets on each (2/4), or 7 fertile spikelets on each (3/4), or 8 fertile spikelets on each (2/4), or 9-12 fertile spikelets on each (1/4). Rhachis fragile at the nodes; flattened (1/8), or subterete (7/8); terminating in a spikelet (22), or sterile spikelet (8). Spikelet packing crowded (6), or contiguous (20), or lax (1), or distant (3). Rhachis internodes indefinite (6), or linear (24). Rhachis internode tip cupuliform (7/7). Sexes mixed. Spikelets appressed (14/14); subtended by an involucre. Fertile spikelets sessile; 1 in the cluster. Male spikelets pedicelled; 5 in a cluster (29), or 6 in a cluster (1). Involucre composed of imperfect spikelets; with pedicels forming a cup (26), or with pedicels forming a long tube (4). Pedicels fused to each other; oblong (21), or cuneate (9); tip rectangular (29/29).
    Fertile
    Spikelets comprising 1 fertile florets; without rhachilla extension. Spikelets lanceolate (9), or oblong (1), or ovate (20); laterally compressed (18), or dorsally compressed (12); 2.5-6.801-15 mm long; falling entire; deciduous with accessory branch structures.
    Glume
    Glumes shorter than spikelet (2), or reaching apex of florets (8), or exceeding apex of florets (21); thinner than fertile lemma. Lower glume subulate (1), or linear (1), or lanceolate (11), or oblong (4), or ovate (14); 1 length of upper glume; membranous (1), or chartaceous (29); without keels (13), or 1-keeled (17); 1 -veined (8/13), or 2 -veined (2/13), or 3 -veined (6/13). Lower glume lateral veins absent (6), or obscure (1), or distinct (24). Lower glume surface smooth (29), or asperulous (1); glabrous (22), or puberulous (2), or pubescent (7). Lower glume apex obtuse (3), or acute (22), or acuminate (5), or attenuate (1), or caudate (1). Upper glume subulate (1), or linear (1), or lanceolate (4), or oblong (4), or ovate (21); 1-1.176-1.5 length of adjacent fertile lemma; membranous (1), or chartaceous (29); without keels (7/24), or 1-keeled (17/24); 1 -veined (7/12), or 2 -veined (1/12), or 3 -veined (6/12). Upper glume lateral veins with cross-veins (1/1). Upper glume surface smooth (29), or asperulous (1); glabrous (23), or puberulous (2), or pubescent (6). Upper glume apex obtuse (3), or acute (22), or acuminate (5), or attenuate (1), or caudate (1).
    Florets
    Fertile florets female. Fertile lemma lanceolate (2), or oblong (4), or ovate (25); coriaceous; without keel; 3 -veined (10/10). Lemma surface smooth (27), or scaberulous (3); glabrous (27), or puberulous (1), or pubescent (2). Lemma apex obtuse (2/29), or acute (27/29); without ornament (29), or pubescent (1). Palea 1-1.006-1.2 length of lemma; membranous (1), or coriaceous (29); 2 -veined (7/8), or 4 -veined (1/8); without keels (27), or 2-keeled (3).
    Flowers
    Lodicules 3 (28/28); membranous (1/1); glabrous (26/28), or ciliate (2/28). Anthers 2-14-30. Stigmas 2 (27/27). Ovary glabrous (4/4).
    Fruits
    Caryopsis with adherent pericarp (1/1); ovoid (1/1). Hilum linear (1/1).
    Spikelets
    Male spikelets distinct from female; lanceolate (1), or elliptic (1), or oblong (4), or ovate (26). Male spikelet glumes 2; muticous (3/5), or awned (2/5). Male spikelet lemma muticous (3/3). Spikelets comprising 1 fertile florets; without rhachilla extension. Spikelets lanceolate (9), or oblong (1), or ovate (20); laterally compressed (18), or dorsally compressed (12); 2.5-6.801-15 mm long; falling entire; deciduous with accessory branch structures.
    Male
    Male spikelets distinct from female; lanceolate (1), or elliptic (1), or oblong (4), or ovate (26). Male spikelet glumes 2; muticous (3/5), or awned (2/5). Male spikelet lemma muticous (3/3).
    Distribution
    South America.

    Images

    Distribution

    Doubtfully present in:

    Windward Is.

    Native to:

    Bolivia, Brazil North, Brazil Northeast, Brazil Southeast, Colombia, Costa Rica, Ecuador, French Guiana, Guyana, Nicaragua, Panamá, Peru, Suriname, Venezuela

    Pariana Aubl. appears in other Kew resources:

    First published in Hist. Pl. Guiane: 876 (1775)

    Accepted by

    • Govaerts, R. (2019). World Checklist of Vascular Plants (WCVP Database) The Board of Trustees of the Royal Botanic Gardens, Kew.

    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