Genus:
Hordeum L.

Hordeum chilense Roem. & Schult.

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

[GB]
Morphology General Habit
Perennial; caespitose. Butt sheaths pubescent; persistent and investing base of culm; with compacted dead sheaths, or fibrous dead sheaths. Culms geniculately ascending; 20-80 cm long. Leaf-sheath auricles absent. Ligule an eciliate membrane; 0.4-1.8 mm long. Leaf-blades 4-17 cm long; 2-5 mm wide. Leaf-blade surface smooth, or scaberulous; glabrous, or pilose.
Morphology Reproductive morphology Inflorescences
Inflorescence composed of racemes. Racemes 1; single; linear; bilateral; 4-8 cm long; 4-7 mm wide. Rhachis fragile at the nodes; narrowly winged; flattened; ciliate on margins. Spikelet packing broadside to rhachis. Rhachis internodes oblong; 1.2-2.3 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.
Morphology Reproductive morphology Inflorescences Spikelets
Companion sterile spikelets well-developed; containing empty lemmas; lanceolate; dorsally compressed; 10-22 mm long; shorter than fertile; deciduous with the fertile. Companion sterile spikelet glumes subulate. Companion sterile spikelet lemmas 1; 1.3-1.7 mm long; muticous. Spikelets comprising 1 fertile florets; with a barren rhachilla extension. Spikelets lanceolate; dorsally compressed; 6.5-11.7 mm long; falling entire; deciduous with accessory branch structures.
Sterile
Companion sterile spikelets well-developed; containing empty lemmas; lanceolate; dorsally compressed; 10-22 mm long; shorter than fertile; deciduous with the fertile. Companion sterile spikelet glumes subulate. Companion sterile spikelet lemmas 1; 1.3-1.7 mm long; muticous.
Fertile
Spikelets comprising 1 fertile florets; with a barren rhachilla extension. Spikelets lanceolate; dorsally compressed; 6.5-11.7 mm long; falling entire; deciduous with accessory branch structures.
Morphology Reproductive morphology Inflorescences Bracts Glume
Glumes collateral; similar; gaping. Lower glume linear; 4.2-7.5 mm long; 1 length of upper glume. Lower glume surface scabrous. Lower glume apex awned; 1 -awned. Lower glume awn 4-18 mm long. Upper glume linear; 4.3-7.5 mm long. Upper glume surface scabrous. Upper glume awned; 1 -awned. Upper glume awn 4-18 mm long.
Morphology Reproductive morphology Flowers Florets
Fertile lemma lanceolate; 6.5-11.7 mm long; coriaceous; without keel; 5 -veined. Lemma lateral veins obscure. Lemma surface scabrous; rough above. Lemma apex acuminate; awned; 1 -awned. Principal lemma awn 4-12.5 mm long overall; limb scabrous. Rhachilla extension 2-7 mm long.
Morphology Reproductive morphology Flowers
Anthers 3; 1.3-3 mm long. Ovary pubescent on apex.
Morphology Reproductive morphology Fruits
Caryopsis with adherent pericarp; sulcate on hilar side; hairy at apex. Hilum linear.
Distribution
South America: southern South America.
Reference
Triticeae. Bothmer 1993.

Native to:

Argentina South, Chile Central, Chile North, Chile South, Juan Fernández Is.

Hordeum chilense Roem. & Schult. appears in other Kew resources:

Date Reference Identified As Barcode Type Status Has image?
Chile K000308566 holotype Yes

First published in Syst. Veg., ed. 15 bis 2: 796 (1817)

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

  • 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