Poaceae
Nassella

Nassella chilensis (Trin.) É.Desv.

First published in C.Gay, Fl. Chil. 6: 267 (1854)
This species is accepted
The native range of this species is Chile to S. Argentina. It is a perennial and grows primarily in the temperate biome.

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]

Morphology General Habit
Perennial. Rhizomes short. Culms 30-100 cm long; 1 mm diam.; 4-12 -noded. Ligule an eciliate membrane. Leaf-blades spreading; flat, or convolute; 3-10 cm long; 1-1.5 mm wide.
Morphology Reproductive morphology Inflorescences
Inflorescence a panicle. Panicle contracted; linear; 2-15 cm long. Spikelets solitary. Fertile spikelets pedicelled.
Morphology Reproductive morphology Inflorescences Spikelets
Spikelets comprising 1 fertile florets; without rhachilla extension. Spikelets ovate; subterete; 3-4.5 mm long; breaking up at maturity; disarticulating below each fertile floret.
Fertile
Spikelets comprising 1 fertile florets; without rhachilla extension. Spikelets ovate; subterete; 3-4.5 mm long; breaking up at maturity; disarticulating below each fertile floret.
Morphology Reproductive morphology Inflorescences Bracts Glume
Glumes persistent; similar; exceeding apex of florets; thinner than fertile lemma. Lower glume ovate; 3-4.5 mm long; 1 length of upper glume; membranous; 1-keeled; 3 -veined. Lower glume apex acuminate; awned; 1 -awned. Lower glume awn 0.2-0.3 mm long. Upper glume ovate; 3-4.5 mm long; 2 length of adjacent fertile lemma; membranous; 1-keeled; 3 -veined. Upper glume apex acuminate; awned; 1 -awned. Upper glume awn 0.2-0.3 mm long.
Morphology Reproductive morphology Flowers Florets
Fertile lemma ovate; laterally compressed; 1.6-2.2 mm long; coriaceous; shiny; keeled; lightly keeled. Lemma margins convolute; covering most of palea. Lemma apex obtuse; awned; 1 -awned. Principal lemma awn eccentric; bigeniculate; 7-10 mm long overall; with a straight or slightly twisted column; deciduous. Palea 0.5 length of lemma; membranous; 0 -veined; without keels.
Morphology Reproductive morphology Flowers
Lodicules 2. Anthers 3; 0.3-0.4 mm long.
Distribution
South America: southern South America.
Reference
Stipeae. WDC.
[GB]

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 2024. 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 2024. 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