Family:
Poaceae Barnhart
Genus:
Trisetaria Forssk.

Trisetaria glumacea (Boiss.) Maire

This species is accepted, and its native range is Syria to Libya.

[GB]
Morphology General Habit
Annual; caespitose. Culms erect, or geniculately ascending; 6-16 cm long. Culm-nodes black. Leaf-sheaths without keel; pubescent; with reflexed hairs. Ligule an eciliate membrane; 1 mm long; truncate. Leaf-blades 3-6 cm long; 1-2 mm wide. Leaf-blade surface pilose; hairy on both sides.
Morphology Reproductive morphology Inflorescences
Inflorescence a panicle. Panicle contracted; lanceolate, or oblong; continuous; 2-5 cm long; 1-1.5 cm wide. Panicle axis glabrous. Panicle branches scabrous. Spikelets solitary. Fertile spikelets pedicelled. Pedicels oblong; scabrous.
Morphology Reproductive morphology Inflorescences Spikelets
Spikelets comprising 2 fertile florets; with a barren rhachilla extension. Spikelets cuneate; laterally compressed; 4-5 mm long; breaking up at maturity; disarticulating below each fertile floret. Rhachilla internodes pilose.
Fertile
Spikelets comprising 2 fertile florets; with a barren rhachilla extension. Spikelets cuneate; laterally compressed; 4-5 mm long; breaking up at maturity; disarticulating below each fertile floret. Rhachilla internodes pilose.
Morphology Reproductive morphology Inflorescences Bracts Glume
Glumes persistent; similar; exceeding apex of florets; thinner than fertile lemma; shiny; gaping. Lower glume lanceolate, or oblong; 4-5 mm long; 1 length of upper glume; membranous; 1-keeled; 3 -veined. Lower glume primary vein scabrous. Lower glume apex acuminate; mucronate. Upper glume lanceolate, or oblong; 4-5 mm long; 2 length of adjacent fertile lemma; membranous; 1-keeled; 3 -veined. Upper glume primary vein scabrous. Upper glume apex acuminate; mucronate.
Morphology Reproductive morphology Flowers Florets
Fertile lemma lanceolate, or oblong; 2-2.5 mm long; membranous; shiny; without keel; 5 -veined. Lemma apex dentate; 2 -fid; awned; 3 -awned. Principal lemma awn dorsal; arising 0.25-0.4 way up back of lemma; geniculate; 2.5-3 mm long overall; not or scarcely exserted from spikelet; with twisted column. Lateral lemma awns arising on apex of lobes; 1-1.5 mm long; shorter than principal. Palea gaping; linear; 0.66 length of lemma; hyaline. Palea keels scabrous. Palea apex dentate; 2 -fid. Rhachilla extension pilose.
Morphology Reproductive morphology Flowers
Anthers 3; 1.5 mm long. Ovary glabrous.
Morphology Reproductive morphology Fruits
Caryopsis with adherent pericarp. Hilum punctiform.
Distribution
Africa: north. Asia-temperate: western Asia.
Reference
Aveneae. Fl Afr N 1993.

Native to:

Egypt, Lebanon-Syria, Libya, Palestine, Sinai

Trisetaria glumacea (Boiss.) Maire appears in other Kew resources:

Date Reference Identified As Barcode Type Status Has image?
Letourneux, A.H. [277], Egypt K000808656 Yes

First published in Bull. Soc. Hist. Nat. Afrique N. 33: 93 (1942)

Accepted by

  • Boulos, L. (2005). Flora of Egypt 4: 1-617. Al Hadara Publishing, Cairo.
  • Clayton, W.D., Harman, K.T. & Williamson, H. (2006). World Grass Species - Synonymy database The Board of Trustees of the Royal Botanic Gardens, Kew.
  • Danin, A. (2004). Distribution Atlas of Plants in the Flora Palaestina area: 1-517. The Israel Academy of Sciences and Humanities, Jerusalem.
  • Dobignard, D. & Chatelain, C. (2010). Index synonymique de la flore d'Afrique du nord 1: 1-455. Éditions des conservatoire et jardin botaniques, Genève.

Literature

Kew Backbone Distributions

  • Boulos, L. (2005). Flora of Egypt 4: 1-617. Al Hadara Publishing, Cairo.
  • Dobignard, D. & Chatelain, C. (2010). Index synonymique de la flore d'Afrique du nord 1: 1-455. Éditions des conservatoire et jardin botaniques, Genève.

  • GrassBase - The Online World Grass Flora

    http://creativecommons.org/licenses/by-nc-sa/3.0

  • Herbarium Catalogue Specimens

    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 2022. 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 2022. 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