Poaceae
Agrostis

Agrostis glabra (J.Presl) Kunth

First published in Enum. Pl. 1: 226 (1833)
This species is accepted
The native range of this species is Chile to W. 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; culms solitary. Rhizomes short, or elongated. Culms erect; 25-70 cm long; 2-4 -noded. Culm-nodes brown. Leaves cauline. Leaf-sheaths 2.5-20 cm long; smooth, or scaberulous. Ligule an eciliate membrane; 3-10 mm long; scaberulous on abaxial surface; erose. Leaf-blades 2.5-15 cm long; 1.5-5 mm wide. Leaf-blade surface scabrous.
Morphology Reproductive morphology Inflorescences
Inflorescence a panicle. Panicle open; oblong; nodding; 8-28 cm long. Primary panicle branches 2-5 -nate. Panicle axis 5-7 noded. Panicle branches flexuous; scabrous. Spikelets solitary. Fertile spikelets pedicelled. Pedicels scaberulous; puberulous.
Morphology Reproductive morphology Inflorescences Spikelets
Spikelets comprising 1 fertile florets; without rhachilla extension. Spikelets elliptic; laterally compressed; 2.6-3.1 mm long; breaking up at maturity; disarticulating below each fertile floret. Floret callus pilose. Floret callus hairs 0.33-0.5 length of lemma.
Fertile
Spikelets comprising 1 fertile florets; without rhachilla extension. Spikelets elliptic; laterally compressed; 2.6-3.1 mm long; breaking up at maturity; disarticulating below each fertile floret. Floret callus pilose. Floret callus hairs 0.33-0.5 length of lemma.
Morphology Reproductive morphology Inflorescences Bracts Glume
Glumes persistent; similar; exceeding apex of florets; firmer than fertile lemma. Lower glume lanceolate; 1 length of upper glume; membranous; purple; 1-keeled; 1 -veined. Lower glume primary vein scabrous. Lower glume lateral veins absent. Lower glume apex acute. Upper glume lanceolate; 2.6-3.1 mm long; 1.5-1.6 length of adjacent fertile lemma; membranous; purple; 1-keeled; 1 -veined. Upper glume primary vein scabrous. Upper glume lateral veins absent. Upper glume apex acute.
Morphology Reproductive morphology Flowers Florets
Fertile lemma elliptic; 1.6-2 mm long; hyaline; without keel; 5 -veined. Lemma apex erose; truncate; muticous, or mucronate. Principal lemma awn dorsal. Palea absent or minute.
Morphology Reproductive morphology Flowers
Lodicules 2; 0.4-0.5 mm long; membranous. Anthers 3; 1.2-1.8 mm long.
Morphology Reproductive morphology Fruits
Caryopsis with adherent pericarp. Hilum linear.
Distribution
South America: southern South America.
Reference
Aveneae. Fl Pat 1995.
[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 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