1. Family: Poaceae Barnhart
    1. Steinchisma Raf.

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

    [GB]

    nonem

    Habit
    Annual (1), or perennial. Rhizomes absent (4), or short (3). Stolons absent, or present (1). Culms erect (4), or geniculately ascending (3), or decumbent (3); 15-57.14-150 cm long; firm (5), or wiry (2); rooting from lower nodes (1/1). Culm-internodes elliptical in section (1/1). Lateral branches lacking (2/3), or sparse (1/3), or ample (1/3). Ligule an eciliate membrane (2), or a ciliolate membrane (5). Leaf-blades linear, or lanceolate (1).
    Inflorescences
    Inflorescence a panicle; terminal, or terminal and axillary (1). Panicle open (6), or contracted (1). Spikelets appressed (1/1); solitary. Fertile spikelets pedicelled.
    Spikelets
    Spikelets comprising 1 basal sterile florets; 1 fertile florets; without rhachilla extension. Spikelets lanceolate (1), or elliptic (4), or oblong (4); laterally compressed (4), or dorsally compressed (3); 1-2.349-4 mm long; falling entire.
    Fertile
    Spikelets comprising 1 basal sterile florets; 1 fertile florets; without rhachilla extension. Spikelets lanceolate (1), or elliptic (4), or oblong (4); laterally compressed (4), or dorsally compressed (3); 1-2.349-4 mm long; falling entire.
    Glume
    Glumes shorter than spikelet (5), or reaching apex of florets (1), or exceeding apex of florets (1); thinner than fertile lemma. Lower glume ovate; membranous; without keels; 3 -veined, or 4-5 -veined (1). Lower glume apex obtuse (4), or acute (4). Upper glume lanceolate (2), or elliptic (5), or oblong (2), or ovate (1); membranous; without keels; 3 -veined (4), or 4 -veined (2), or 5 -veined (5). Upper glume lateral veins without ribs (6), or ribbed (1). Upper glume surface glabrous, or pubescent (1). Upper glume apex obtuse (3), or acute (5).
    Florets
    Basal sterile florets male (2), or barren (5); with palea. Lemma of lower sterile floret elliptic (3), or oblong (1), or ovate (5); membranous (5), or chartaceous (2); 3 -veined (4/5), or 4 -veined (2/5), or 5 -veined (3/5); obtuse (1/6), or acute (5/6). Palea of lower sterile floret hyaline (1), or becoming indurate on flanks at maturity (6). Fertile lemma elliptic (5), or oblong (2), or ovate (1); dorsally compressed (1/1); coriaceous (6), or indurate (1); without keel; 3 -veined (1/1). Lemma surface smooth (5), or papillose (2). Lemma margins involute. Lemma apex obtuse (1), or acute (6). Palea not rolled (6), or involute (1); coriaceous (6), or indurate (1); without keels (6), or 2-keeled (1).
    Flowers
    Lodicules 2 (1/1). Anthers 3 (1/1).
    Fruits
    Caryopsis with adherent pericarp (2/2); oblong (2/2). Embryo 0.5 length of caryopsis. Hilum elliptic (1/1).
    Distribution
    Africa (2), or Australasia (2), or North America (3), or South America (6).

    Images

    Distribution

    Native to:

    Alabama, Argentina Northeast, Argentina Northwest, Arkansas, Bahamas, Belize, Bolivia, Brazil North, Brazil Northeast, Brazil South, Brazil Southeast, Brazil West-Central, Colombia, Costa Rica, Cuba, Dominican Republic, Ecuador, El Salvador, Florida, French Guiana, Galápagos, Georgia, Guatemala, Guyana, Haiti, Honduras, Illinois, Jamaica, Kentucky, Leeward Is., Louisiana, Mexico Central, Mexico Northeast, Mexico Southeast, Mexico Southwest, Mississippi, Missouri, New Mexico, Nicaragua, North Carolina, Oklahoma, Panamá, Paraguay, Puerto Rico, South Carolina, Suriname, Tennessee, Texas, Trinidad-Tobago, Uruguay, Venezuela, Virginia, Windward Is.

    Introduced into:

    Ascension, Assam, Benin, Burkina, Burundi, Cameroon, Central American Pac, Gabon, Ghana, Guinea, Guinea-Bissau, Ivory Coast, KwaZulu-Natal, Liberia, Nigeria, Queensland, Sierra Leone, Togo

    Steinchisma Raf. appears in other Kew resources:

    First published in Bull. Bot. (Geneva) 1: 220 (1830)

    Accepted by

    • Govaerts, R.H.A. (2011). World checklist of selected plant families published update Facilitated by the 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