Family:
Poaceae Barnhart
Genus:
Hordeum L.

Hordeum fuegianum Bothmer, N.Jacobsen & R.B.Jørg.

This species is accepted, and its native range is S. Chile to S. Argentina.

[GB]
Morphology General Habit
Perennial; caespitose; clumped densely. Rhizomes absent, or short. Butt sheaths persistent and investing base of culm; with fibrous dead sheaths. Culms erect; 19-50 cm long; 3-4 -noded. Culm-nodes glabrous. Leaf-sheaths 6-15 cm long; glabrous on surface. Leaf-sheath auricles absent. Ligule an eciliate membrane; 0.3-0.4 mm long. Leaf-blades 1-10 cm long; 1.3-3.8 mm wide. Leaf-blade surface scabrous; rough adaxially; pubescent; hairy abaxially.
Morphology Reproductive morphology Inflorescences
Inflorescence composed of racemes. Peduncle 15-32 cm long. Racemes 1; single; bilateral; 4-7 cm long; 4-5 mm wide; bearing 20-45 fertile spikelets on each. Rhachis fragile at the nodes; flattened. Spikelet packing broadside to rhachis. Rhachis internodes cuneate; 0.9-2.3 mm long; falling with spikelet above. Spikelets in threes. Fertile spikelets sessile; 1 in the cluster. Companion sterile spikelets pedicelled; 2 in the cluster. Pedicels oblong; curved; 1.5-3.3 mm long.
Morphology Reproductive morphology Inflorescences Spikelets
Companion sterile spikelets well-developed; containing empty lemmas, or male; lanceolate; dorsally compressed; 15-15.4 mm long; as long as fertile; deciduous with the fertile. Companion sterile spikelet glumes similar in width; subulate; 10-15.4 mm long. Companion sterile spikelet lemmas 1; 1.8-3.7 mm long; muticous, or 1-awned; with 0-1.3 mm long awn. Spikelets comprising 1 fertile florets; with a barren rhachilla extension. Spikelets lanceolate; dorsally compressed; 10.2-15.4 mm long; 0.9-1.6 mm wide; falling entire; deciduous with accessory branch structures.
Sterile
Companion sterile spikelets well-developed; containing empty lemmas, or male; lanceolate; dorsally compressed; 15-15.4 mm long; as long as fertile; deciduous with the fertile. Companion sterile spikelet glumes similar in width; subulate; 10-15.4 mm long. Companion sterile spikelet lemmas 1; 1.8-3.7 mm long; muticous, or 1-awned; with 0-1.3 mm long awn.
Fertile
Spikelets comprising 1 fertile florets; with a barren rhachilla extension. Spikelets lanceolate; dorsally compressed; 10.2-15.4 mm long; 0.9-1.6 mm wide; falling entire; deciduous with accessory branch structures.
Morphology Reproductive morphology Inflorescences Bracts Glume
Glumes collateral; similar; exceeding apex of florets; gaping. Lower glume subulate; 10.2-15.4 mm long; 1 length of upper glume; coriaceous. Upper glume subulate; 10.2-15.4 mm long; coriaceous.
Morphology Reproductive morphology Flowers Florets
Fertile lemma lanceolate; 6.7-9.3 mm long; coriaceous; without keel; 5 -veined. Lemma surface glabrous, or pilose. Lemma apex acuminate; awned; 1 -awned. Principal lemma awn 3.8-8.4 mm long overall. Rhachilla extension 4.2-6.5 mm long; pilose.
Morphology Reproductive morphology Flowers
Lodicules 2; 0.9-1.4 mm long; glabrous, or ciliate; obtuse, or acute. Anthers 3; 1.5-2.1 mm long; yellow, or purple. Ovary pubescent on apex.
Morphology Reproductive morphology Fruits
Caryopsis with adherent pericarp; hairy at apex. Hilum linear.
Distribution
South America: southern South America.
Reference
Triticeae. Bothmer 1997.

Native to:

Argentina South, Chile South

Hordeum fuegianum Bothmer, N.Jacobsen & R.B.Jørg. appears in other Kew resources:

First published in Nordic J. Bot. 6: 404 (1986)

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.
  • Zuloaga, F.O., Morrone, O. , Belgrano, M.J., Marticorena, C. & Marchesi, E. (eds.) (2008). Catálogo de las Plantas Vasculares del Cono Sur Monographs in Systematic Botany from the Missouri Botanical Garden 107: 1-3348. Missouri Botanical Garden.

Literature

Kew Backbone Distributions

  • Zuloaga, F.O., Morrone, O. , Belgrano, M.J., Marticorena, C. & Marchesi, E. (eds.) (2008). Catálogo de las Plantas Vasculares del Cono Sur Monographs in Systematic Botany from the Missouri Botanical Garden 107: 1-3348. Missouri Botanical Garden.

  • 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 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