Poaceae
Lamarckia

Lamarckia aurea (L.) Moench

First published in Methodus: 201 (1794)
This species is accepted
The native range of this species is Macaronesia, Medit. to N. India and Ethiopia. It is an annual and grows primarily in the subtropical biome. It is has environmental uses and as a medicine.

Descriptions

Extinction risk predictions for the world's flowering plants to support their conservation (2024). Bachman, S.P., Brown, M.J.M., Leão, T.C.C., Lughadha, E.N., Walker, B.E. https://nph.onlinelibrary.wiley.com/doi/full/10.1111/nph.19592

Conservation
Predicted extinction risk: not threatened. Confidence: confident
[AERP]

Bernal, R., Gradstein, S.R. & Celis, M. (eds.). 2015. Catálogo de plantas y líquenes de Colombia. Instituto de Ciencias Naturales, Universidad Nacional de Colombia, Bogotá. http://catalogoplantasdecolombia.unal.edu.co

Distribution
Cultivada en Colombia; Alt. 500 - 1000 m.; Andes.
Morphology General Habit
Hierba
[CPLC]

Distribution
Biogeografic region: Andean. Elevation range: 500–1000 m a.s.l. Cultivated in Colombia. Naturalised in Colombia. Colombian departments: Valle del Cauca.
Habit
Herb.
[UPFC]

Morphology General Habit
Annual. Culms geniculately ascending; 10-15(-40) cm long. Ligule an eciliate membrane; 5-8 mm long. Leaf-blades 5-20 cm long; 3-7 mm wide.
Morphology Reproductive morphology Inflorescences
Inflorescence a panicle. Panicle contracted; ovate; secund; 3-6 cm long; gathered into fascicles. Panicle axis bearing deciduous spikelet clusters. Panicle branches pilose. Spikelets subtended by an involucre. Fertile spikelets pedicelled; 1 in the cluster. Companion sterile spikelets pedicelled; 3 in the cluster (and a rudiment). Involucre composed of imperfect spikelets; cuneate; base truncate. Pedicels filiform; pubescent.
Sterile
Companion sterile spikelets well-developed; containing empty lemmas; linear; laterally compressed; 4-8 mm long; longer than fertile; deciduous with the fertile. Companion sterile spikelet glumes membranous; glabrous; entire; acuminate; mucronate, or awned; both glumes awned; with 0.5-1 mm long awn. Companion sterile spikelet lemmas 8-15; exserted from glumes; muticous.
Morphology Reproductive morphology Inflorescences Spikelets
Spikelets comprising 1 fertile florets; with diminished florets at the apex. Spikelets ovate; laterally compressed; 3-5 mm long; falling entire; deciduous with accessory branch structures. Companion sterile spikelets well-developed; containing empty lemmas; linear; laterally compressed; 4-8 mm long; longer than fertile; deciduous with the fertile. Companion sterile spikelet glumes membranous; glabrous; entire; acuminate; mucronate, or awned; both glumes awned; with 0.5-1 mm long awn. Companion sterile spikelet lemmas 8-15; exserted from glumes; muticous.
Fertile
Spikelets comprising 1 fertile florets; with diminished florets at the apex. Spikelets ovate; laterally compressed; 3-5 mm long; falling entire; deciduous with accessory branch structures.
Morphology Reproductive morphology Inflorescences Bracts Glume
Glumes similar; exceeding apex of florets; similar to fertile lemma in texture. Lower glume lanceolate; 3-5 mm long; 1 length of upper glume; membranous; without keels; 1 -veined. Lower glume lateral veins absent. Lower glume apex acuminate; mucronate, or awned; 1 -awned. Lower glume awn 1 mm long. Upper glume lanceolate; 3-5 mm long; 1.6 length of adjacent fertile lemma; membranous; without keels; 1 -veined. Upper glume lateral veins absent. Upper glume apex acuminate; mucronate, or awned; 1 -awned. Upper glume awn 1 mm long.
Morphology Reproductive morphology Flowers Florets
Fertile lemma elliptic; 2.5 mm long; without keel; 5 -veined. Lemma surface scabrous; rough above. Lemma apex dentate; 2 -fid; incised 0.2 of lemma length; awned. Principal lemma awn from a sinus; 6 mm long overall. Palea 1 length of lemma. Apical sterile florets 1 in number; barren; ovate; 0.5 mm long. Apical sterile lemmas awned; 1 -awned. Apical sterile lemma awns 6 mm long.
Morphology Reproductive morphology Flowers
Anthers 3; 0.5 mm long.
Morphology Reproductive morphology Fruits
Caryopsis with adherent pericarp. Hilum elliptic.
Distribution
Europe: southwestern and southeastern. Africa: north, Macaronesia, northeast tropical, and south. Asia-temperate: western Asia and Arabia. Asia-tropical: India. Australasia: Australia. Pacific: north-central. North America: southwest USA, south-central USA, and Mexico. South America: Mesoamericana, western South America, and southern South America.
Reference
Poeae. Tothill.
[GB]

Uses

Use Environmental
Environmental uses.
Use Medicines
Medical uses.
[UPFC]

Sources

  • Angiosperm Extinction Risk Predictions v1

    • Angiosperm Threat Predictions
    • http://creativecommons.org/licenses/by/4.0

  • Catálogo de Plantas y Líquenes de Colombia

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

  • GrassBase - The Online World Grass Flora

    • Clayton, W.D., Vorontsova, M.S., Harman, K.T. and Williamson, H. (2006 onwards). GrassBase - The Online World Grass Flora.
    • http://creativecommons.org/licenses/by-nc-sa/3.0

  • Herbarium Catalogue Specimens

    • 'The Herbarium Catalogue, Royal Botanic Gardens, Kew. Published on the Internet http://www.kew.org/herbcat [accessed on Day Month Year]'. Please enter the date on which you consulted the system.
    • 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 Vascular Plants 2026. Published on the Internet at http://www.ipni.org and https://powo.science.kew.org/
    • © Copyright 2023 World Checklist of Vascular Plants. http://creativecommons.org/licenses/by/3.0

  • Kew Names and Taxonomic Backbone

    • The International Plant Names Index and World Checklist of Vascular Plants 2026. Published on the Internet at http://www.ipni.org and https://powo.science.kew.org/
    • © Copyright 2023 International Plant Names Index and World Checklist of Vascular Plants. http://creativecommons.org/licenses/by/3.0

  • Kew Science Photographs

    • Copyright applied to individual images

  • Useful Plants and Fungi of Colombia

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