1. Family: Poaceae Barnhart
    1. Genus: Arberella Soderstr. & C.E.Calderón
      1. Arberella dressleri Soderstr. & C.E.Calderón

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

    [GB]
    Habit
    Perennial; caespitose. Culms erect; 30-35 cm long; 3-6 -noded. Culm-internodes solid. Culm-nodes constricted. Lateral branches lacking. Leaves cauline. Leaf-sheaths outer margin hairy. Ligule a ciliolate membrane; 0.8 mm long. Leaf-blade base asymmetrical; with a brief petiole-like connection to sheath; petiole 0.1-0.2 cm long; petiole pubescent. Leaf-blades lanceolate; 8-14 cm long; 15-30 mm wide. Leaf-blade surface glabrous. Leaf-blade margins serrulate; ciliate. Leaf-blade apex acute.
    Inflorescences
    Monoecious; with male and female spikelets in the same inflorescence (or some all male). Inflorescence a panicle; comprising 1 fertile spikelets (and 5-20 male); terminal and axillary. Axillary inflorescences present throughout the plant. Panicle open; linear; 4-8 cm long; bearing few spikelets. Sexes segregated; on unisexual branches; with male below. Spikelets solitary. Fertile spikelets pedicelled. Male spikelets pedicelled; 2 in a cluster. Pedicels clavate (female), or linear (male); scaberulous.
    Spikelets
    Spikelets comprising 1 fertile florets; without rhachilla extension. Spikelets lanceolate; dorsally compressed; 13-22 mm long; breaking up at maturity; disarticulating below each fertile floret. Floret callus evident; pubescent; truncate. Male spikelets distinct from female; 1 flowered; linear, or lanceolate; 3.2-6.4 mm long. Male spikelet glumes absent. Male spikelet lemma 3 -veined; awned; with 1 mm long awn.
    Fertile
    Spikelets comprising 1 fertile florets; without rhachilla extension. Spikelets lanceolate; dorsally compressed; 13-22 mm long; breaking up at maturity; disarticulating below each fertile floret. Floret callus evident; pubescent; truncate.
    Glume
    Glumes deciduous; similar; exceeding apex of florets; thinner than fertile lemma. Lower glume elliptic; 13-22 mm long; 1 length of upper glume; membranous; pallid; without keels; 9-11 -veined. Lower glume lateral veins with cross-veins. Lower glume apex caudate. Upper glume elliptic; 13-22 mm long; 1.5 length of adjacent fertile lemma; membranous; pallid; without keels; 8-9 -veined. Upper glume lateral veins with cross-veins. Upper glume apex caudate.
    Florets
    Fertile florets female. Fertile lemma lanceolate, or ovate; dorsally compressed; 8.5-10.3 mm long; indurate; pallid and mid-green; mottled with last colour; shiny; without keel; 5 -veined. Lemma surface pubescent; hairy above and below. Lemma margins pubescent; hairy below. Lemma apex apiculate. Palea lanceolate; indurate; 9-10 -veined. Palea surface pubescent; hairy on back; hairy above.
    Flowers
    Lodicules 3; 1.1-1.2 mm long; membranous. Anthers 3; 1.9-2 mm long. Stigmas 2.
    Male
    Male spikelets distinct from female; 1 flowered; linear, or lanceolate; 3.2-6.4 mm long. Male spikelet glumes absent. Male spikelet lemma 3 -veined; awned; with 1 mm long awn.
    Distribution
    South America: Mesoamericana.
    Reference
    Olyreae. Soderstrom.

    Images

    Distribution

    Native to:

    Panamá

    Arberella dressleri Soderstr. & C.E.Calderón appears in other Kew resources:

    Date Reference Identified As Barcode Type Status
    Nov 1, 2004 Calderón, C.E. [2085], Panama K000433374 isotype
    Soderstrom, T.R. [2018], Panama K000433375 paratype

    First published in Brittonia 31: 433 (1979)

    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

    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 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