Genus:
Hordeum L.

Hordeum pubiflorum Hook.f.

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

[GB]
Morphology General Habit
Perennial. Culms geniculately ascending; 10-40 cm long; 1-3 -noded. Leaf-sheaths glabrous on surface, or pubescent. Ligule an eciliate membrane; truncate. Leaf-blades flat, or convolute; 1.5-2 mm wide. Leaf-blade surface pubescent.
Morphology Reproductive morphology Inflorescences
Inflorescence composed of racemes. Peduncle glabrous, or pubescent above. Racemes 1; single; bilateral; 3-6 cm long. Rhachis fragile at the nodes; flattened; pubescent on margins. Rhachis hairs 0.6 mm long. Spikelet packing broadside to rhachis. Rhachis internodes oblong; 0.9-1 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; 0.5-0.7 mm long; ciliate.
Morphology Reproductive morphology Inflorescences Spikelets
Companion sterile spikelets well-developed; containing empty lemmas; lanceolate; dorsally compressed; 18-20 mm long; as long as fertile; persistent. Companion sterile spikelet glumes similar in width; subulate; 18-20 mm long; pubescent. Companion sterile spikelet lemmas 1; 4-7 mm long; 1-awned. Spikelets comprising 1 fertile florets; with a barren rhachilla extension. Spikelets lanceolate; dorsally compressed; 18-25 mm long; falling entire; deciduous with accessory branch structures.
Sterile
Companion sterile spikelets well-developed; containing empty lemmas; lanceolate; dorsally compressed; 18-20 mm long; as long as fertile; persistent. Companion sterile spikelet glumes similar in width; subulate; 18-20 mm long; pubescent. Companion sterile spikelet lemmas 1; 4-7 mm long; 1-awned.
Fertile
Spikelets comprising 1 fertile florets; with a barren rhachilla extension. Spikelets lanceolate; dorsally compressed; 18-25 mm long; falling entire; deciduous with accessory branch structures.
Morphology Reproductive morphology Inflorescences Bracts Glume
Glumes collateral; similar; exceeding apex of florets; gaping. Lower glume subulate; 18-25 mm long; 1 length of upper glume; coriaceous. Lower glume surface pubescent. Upper glume subulate; 18-25 mm long; coriaceous. Upper glume surface pubescent.
Morphology Reproductive morphology Flowers Florets
Fertile lemma lanceolate; 7.5-10 mm long; coriaceous; purple; without keel; 5 -veined. Lemma surface pubescent; hairy all along, or above. Lemma apex acuminate; awned; 1 -awned. Principal lemma awn 10-16 mm long overall. Palea 1 length of lemma. Palea keels ciliate. Rhachilla extension 6-8 mm long; pilose.
Morphology Reproductive morphology Flowers
Lodicules 2; 0.7-1.3 mm long; ciliate. Anthers 3; 1-1.5 mm long. Ovary pubescent on apex.
Morphology Reproductive morphology Fruits
Caryopsis with adherent pericarp; 2.5-3.5 mm long; hairy at apex. Hilum linear.
Distribution
South America: western South America and southern South America.
Reference
Triticeae. Fl Pat 1995.

Native to:

Argentina South, Chile Central, Chile South

Hordeum pubiflorum Hook.f. appears in other Kew resources:

Date Reference Identified As Barcode Type Status Has image?
King [s.n.], Chile K000308567 lectotype Yes

First published in Fl. Antarct.: 388 (1847)

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