1. Family: Poaceae Barnhart
    1. Genus: Orcuttia Vasey
      1. Orcuttia tenuis Hitchc.

        This species is accepted, and its native range is N. California.

    [GB]
    Habit
    Annual; culms solitary. Culms erect, or geniculately ascending; 5-15(-25) cm long. Lateral branches sparse; arising from upper culm. Leaves without demarcation between sheath and blade. Leaf-sheaths viscid. Ligule absent. Leaf-blades 1-2 cm long; 1.5-2 mm wide; viscid; aromatic. Leaf-blade surface pilose; sparsely hairy.
    Inflorescences
    Inflorescence composed of racemes. Racemes 1; single; bilateral; 5-10 cm long. Rhachis angular. Spikelet packing broadside to rhachis; lax. Spikelets solitary. Fertile spikelets sessile.
    Spikelets
    Spikelets comprising 5-20 fertile florets; with diminished florets at the apex. Spikelets ovate; laterally compressed; 12-15 mm long; breaking up at maturity; disarticulating below each fertile floret.
    Fertile
    Spikelets comprising 5-20 fertile florets; with diminished florets at the apex. Spikelets ovate; laterally compressed; 12-15 mm long; breaking up at maturity; disarticulating below each fertile floret.
    Glume
    Glumes persistent; similar; shorter than spikelet. Lower glume lanceolate; 3-6 mm long; 1 length of upper glume; chartaceous; without keels; 5-9 -veined. Lower glume apex dentate; 2-5 -fid. Upper glume lanceolate; 3-6 mm long; 0.75-1 length of adjacent fertile lemma; chartaceous; without keels; 5-9 -veined. Upper glume apex dentate; 2-5 -fid.
    Florets
    Fertile lemma oblong; 4.5-6 mm long; chartaceous; keeled; 15 -veined. Lemma lateral veins prominent. Lemma apex lobed; 5 -fid; with simple equal lobes; incised 0.5 of lemma length; mucronate. Palea 1 length of lemma; 2 -veined. Apical sterile florets resembling fertile though underdeveloped.
    Flowers
    Lodicules absent. Anthers 3; 3 mm long; pallid. Stigmas 2; sparsely hairy.
    Fruits
    Caryopsis with adherent pericarp; oblong; laterally compressed; 3 mm long; light brown; smooth. Embryo 0.9 length of caryopsis.
    Distribution
    North America: southwest USA.
    Reference
    Orcuttieae. Reeder.

    Images

    Distribution

    Native to:

    California

    Orcuttia tenuis Hitchc. appears in other Kew resources:

    Date Reference Identified As Barcode Type Status
    Eastwood, A. [686], USA K000912320
    Crampton, B. [5084], USA K000912319

    First published in Amer. J. Bot. 21: 131 (1934)

    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.
    • Flora of North America Editorial Committee (2003). Flora of North America North of Mexico 25: 1-781. Oxford University Press, New York, Oxford.

    Literature

    Kew Backbone Distributions
    • Flora of North America Editorial Committee (2003). Flora of North America North of Mexico 25: 1-781. Oxford University Press, New York, Oxford.

    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 2018. 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 2018. 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