Poaceae
Bromus

Bromus pseudosecalinus P.M.Sm.

First published in Feddes Repert. Spec. Nov. Regni Veg. 77: 63 (1968)
This species is accepted
The native range of this species is W. Europe. It is an annual and grows primarily in the temperate biome.

Descriptions

Morphology General Habit
Annual. Culms 30-60 cm long. Leaf-sheaths pubescent. Ligule an eciliate membrane. Leaf-blades 2-4 mm wide.
Morphology Reproductive morphology Inflorescences
Inflorescence a panicle. Panicle contracted; lanceolate; 5-10 cm long. Primary panicle branches appressed. Spikelets solitary. Fertile spikelets pedicelled.
Morphology Reproductive morphology Inflorescences Spikelets
Spikelets comprising 4-8 fertile florets; with diminished florets at the apex. Spikelets lanceolate, or ovate; laterally compressed; 8-12 mm long; breaking up at maturity; disarticulating below each fertile floret. Rhachilla internodes eventually visible between lemmas.
Fertile
Spikelets comprising 4-8 fertile florets; with diminished florets at the apex. Spikelets lanceolate, or ovate; laterally compressed; 8-12 mm long; breaking up at maturity; disarticulating below each fertile floret. Rhachilla internodes eventually visible between lemmas.
Morphology Reproductive morphology Inflorescences Bracts Glume
Glumes persistent; shorter than spikelet. Lower glume elliptic; 0.75 length of upper glume; coriaceous; without keels; 3 -veined. Lower glume apex acute. Upper glume ovate; 0.75 length of adjacent fertile lemma; coriaceous; without keels; 5-7 -veined. Upper glume apex acute.
Morphology Reproductive morphology Flowers Florets
Fertile lemma oblong; 5-6 mm long; chartaceous; without keel; 7 -veined. Lemma lateral veins obscure. Lemma margins involute. Lemma apex awned; 1 -awned. Principal lemma awn subapical; 2-6 mm long overall. Apical sterile florets resembling fertile though underdeveloped.
Morphology Reproductive morphology Flowers
Lodicules 2; membranous. Anthers 3; 1.25-1.75 mm long. Ovary with a fleshy appendage above style insertion; pubescent on apex.
Morphology Reproductive morphology Fruits
Caryopsis with adherent pericarp; concavo-convex; 4-4.5 mm long; hairy at apex; apex fleshy. Hilum linear.
Distribution
Europe: northern.
Reference
Bromeae. Fl Eur 1995.
[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: confident
[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

  • 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