1. Family: Poaceae Barnhart
    1. Tuctoria Reeder

      1. This genus is accepted, and its native range is California to NW. Mexico.

    [GB]

    nonem

    Habit
    Annual. Culms erect (1), or geniculately ascending (2), or decumbent; 5-21.33-50 cm long. Leaves without demarcation between sheath and blade. Ligule absent. Leaf-blades persistent (2), or deciduous at the ligule (1); viscid; aromatic.
    Inflorescences
    Inflorescence composed of racemes; exserted (1), or embraced at base by subtending leaf (2). Racemes single; multilateral. Rhachis angular. Spikelet packing broadside to rhachis; contiguous (2), or distant (1). Spikelets solitary. Fertile spikelets sessile.
    Spikelets
    Spikelets comprising 5-6 fertile florets (1), or 7-9 fertile florets (2), or 10 fertile florets, or 11-40 fertile florets (1); with diminished florets at the apex. Spikelets oblong; laterally compressed; 10-13.33-23 mm long; breaking up at maturity; disarticulating below each fertile floret.
    Fertile
    Spikelets comprising 5-6 fertile florets (1), or 7-9 fertile florets (2), or 10 fertile florets, or 11-40 fertile florets (1); with diminished florets at the apex. Spikelets oblong; laterally compressed; 10-13.33-23 mm long; breaking up at maturity; disarticulating below each fertile floret.
    Glume
    Glumes persistent; shorter than spikelet. Lower glume ovate; 1 length of upper glume; chartaceous; without keels; 7 -veined. Lower glume apex entire (2), or erose (1), or with a unilateral tooth (1), or dentate (1); 1-2 -fid (1/1); acute (2/2); muticous (2), or mucronate (1). Upper glume oblong; 0.75-0.9583-1 length of adjacent fertile lemma; chartaceous; with undifferentiated margins (2), or hyaline margins (1); without keels; 7-9 -veined. Upper glume apex entire (2), or erose (1), or with a unilateral tooth (1), or dentate (1); 1-2 -fid (1/1); acute (2/2); muticous (2), or mucronate (1).
    Florets
    Fertile lemma oblong; chartaceous; of similar consistency on margins (2), or much thinner on margins (1); keeled; 5 -veined (1), or 9-10 -veined (1), or 11-13 -veined (2), or 14-15 -veined (1). Lemma lateral veins ribbed. Lemma surface smooth (2), or scaberulous (1). Lemma apex entire (1), or erose; truncate (1), or acute (2); mucronate. Palea 1 length of lemma; 2 -veined. Palea keels smooth (2), or scaberulous (1). Apical sterile florets resembling fertile though underdeveloped.
    Flowers
    Lodicules 2; free (1), or adnate to palea (2); fleshy; truncate. Anthers 3. Stigmas 2; sparsely hairy.
    Fruits
    Caryopsis with adherent pericarp; oblong (2), or obovoid (1); laterally compressed; smooth (1), or rugose (2). Embryo 0.75-0.7917-1 length of caryopsis.
    Distribution
    North America.

    Images

    Distribution

    Native to:

    California, Mexico Northwest

    Tuctoria Reeder appears in other Kew resources:

    First published in Amer. J. Bot. 69: 1090 (1982)

    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