Genus:
Hordeum L.

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

This species is accepted, and its native range is Guatemala.

[GB]
Morphology General Habit
Perennial. Culms 20-70 cm long. Leaf-sheath auricles absent. Ligule an eciliate membrane; 0.5-0.8 mm long. Leaf-blades 4-10 cm long; 3-6 mm wide. Leaf-blade surface glabrous, or pubescent.
Morphology Reproductive morphology Inflorescences
Inflorescence composed of racemes. Racemes 1; single; bilateral; 3-6 cm long. Rhachis fragile at the nodes; flattened. Spikelet packing broadside to rhachis. Rhachis internodes oblong; 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; 5-8 mm long; as long as fertile; deciduous with the fertile. Companion sterile spikelet glumes subulate; 5-8 mm long. Companion sterile spikelet lemmas 1; 1-3 mm long; muticous, or 1-awned; with 0-0.7 mm long awn. Spikelets comprising 1 fertile florets; with a barren rhachilla extension. Spikelets lanceolate; dorsally compressed; 4.8-7.9 mm long; falling entire; deciduous with accessory branch structures.
Sterile
Companion sterile spikelets well-developed; containing empty lemmas; lanceolate; dorsally compressed; 5-8 mm long; as long as fertile; deciduous with the fertile. Companion sterile spikelet glumes subulate; 5-8 mm long. Companion sterile spikelet lemmas 1; 1-3 mm long; muticous, or 1-awned; with 0-0.7 mm long awn.
Fertile
Spikelets comprising 1 fertile florets; with a barren rhachilla extension. Spikelets lanceolate; dorsally compressed; 4.8-7.9 mm long; falling entire; deciduous with accessory branch structures.
Morphology Reproductive morphology Inflorescences Bracts Glume
Glumes collateral; similar; gaping. Lower glume subulate; 4.8-7.9 mm long; 1 length of upper glume. Lower glume surface scabrous. Upper glume subulate; 4.8-7.9 mm long. Upper glume surface scabrous.
Morphology Reproductive morphology Flowers Florets
Fertile lemma lanceolate; 7 mm long; coriaceous; without keel; 5 -veined. Lemma apex acuminate; awned; 1 -awned. Principal lemma awn 2.5-5.3 mm long overall. Rhachilla extension 2-2.4 mm long.
Morphology Reproductive morphology Flowers
Anthers 3. Ovary pubescent on apex.
Morphology Reproductive morphology Fruits
Caryopsis with adherent pericarp; ellipsoid; sulcate on hilar side; hairy at apex. Hilum linear; 1 length of caryopsis.
Distribution
South America: Mesoamericana.
Reference
Triticeae. Fl Meso-Am 1995.

Native to:

Guatemala

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

First published in Willdenowia 15: 86 (1985)

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.
  • Davidse, G. & al. (eds.) (1994). Flora Mesoamericana 6: 1-543. Universidad Nacional Autónoma de México, México, D.F.

Literature

Kew Backbone Distributions

  • Davidse, G. & al. (eds.) (1994). Flora Mesoamericana 6: 1-543. Universidad Nacional Autónoma de México, México, D.F.

  • 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