Poaceae
Bromus

Bromus gunckelii Matthei

First published in Gayana, Bot. 43: 62 (1986)
This species is accepted
The native range of this species is N. Chile. It is an annual and grows primarily in the desert or dry shrubland biome.

Descriptions

Morphology General Habit
Annual. Culms erect; 8-40 cm long; 1-4 -noded. Culm-nodes pubescent. Leaf-sheaths tubular for much of their length; pubescent. Ligule an eciliate membrane; 2-3 mm long; erose. Leaf-blades 2-15 cm long; 1-4 mm wide.
Morphology Reproductive morphology Inflorescences
Inflorescence a panicle. Panicle open; lanceolate, or oblong; 6-15 cm long. Spikelets solitary. Fertile spikelets pedicelled.
Morphology Reproductive morphology Inflorescences Spikelets
Spikelets comprising 2-5 fertile florets; with diminished florets at the apex. Spikelets elliptic, or oblong; laterally compressed; 15-20 mm long; breaking up at maturity; disarticulating below each fertile floret. Rhachilla internodes 1.2-2.5 mm long; glabrous. Floret callus pubescent; hairy on the margins; obtuse.
Fertile
Spikelets comprising 2-5 fertile florets; with diminished florets at the apex. Spikelets elliptic, or oblong; laterally compressed; 15-20 mm long; breaking up at maturity; disarticulating below each fertile floret. Rhachilla internodes 1.2-2.5 mm long; glabrous. Floret callus pubescent; hairy on the margins; obtuse.
Morphology Reproductive morphology Inflorescences Bracts Glume
Glumes persistent; similar; shorter than spikelet; thinner than fertile lemma. Lower glume linear; 4.1-4.6 mm long; 0.75 length of upper glume; membranous; 1-keeled; 1 -veined. Lower glume lateral veins absent. Lower glume apex acuminate. Upper glume linear; 5.2-6 mm long; 0.66 length of adjacent fertile lemma; membranous; 1-keeled; 3 -veined. Upper glume apex acuminate.
Morphology Reproductive morphology Flowers Florets
Fertile lemma elliptic; 8-10 mm long; chartaceous; without keel; 7 -veined. Lemma surface glabrous to pubescent. Lemma apex dentate; 2 -fid; with lobes 0.5-1 mm long; incised 0.1 of lemma length; awned; 1 -awned. Principal lemma awn subapical; geniculate; with twisted column. Palea lanceolate; 6-9 mm long; 2 -veined. Apical sterile florets resembling fertile though underdeveloped.
Morphology Reproductive morphology Flowers
Lodicules 2; 0.2-0.3 mm long. Anthers 3; 1 mm long. Ovary with a fleshy appendage above style insertion; pubescent on apex.
Morphology Reproductive morphology Fruits
Caryopsis with adherent pericarp; linear; without sulcus; 6 mm long; hairy at apex; apex fleshy.
Distribution
South America: southern South America.
Reference
Bromeae. Mathei 2002.
[GB]

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: low confidence
[AERP]

Sources

  • Angiosperm Extinction Risk Predictions v1

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

  • 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

    • 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