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This species is accepted, and its native range is Central & S. Chile to S. Argentina.
A specimen from Kew's Herbarium

[GB]
Morphology General Habit
Annual. Culms geniculately ascending; 3-20 cm long. Ligule an eciliate membrane; 2 mm long. Leaf-blades 0.3-1.5 cm long; 0.3-0.5 mm wide. Leaf-blade surface glabrous.
Morphology Reproductive morphology Inflorescences
Inflorescence a panicle. Panicle contracted; linear; 1.5-6 cm long. Spikelets solitary. Fertile spikelets pedicelled.
Morphology Reproductive morphology Inflorescences Spikelets
Spikelets comprising (1-)2 fertile florets; with a barren rhachilla extension. Spikelets lanceolate; laterally compressed; 4 mm long; breaking up at maturity; disarticulating below each fertile floret. Rhachilla internodes definite; 1.3-1.5 mm long; pilose. Floret callus pilose. Floret callus hairs 1 mm long; 0.33 length of lemma.
Fertile
Spikelets comprising (1-)2 fertile florets; with a barren rhachilla extension. Spikelets lanceolate; laterally compressed; 4 mm long; breaking up at maturity; disarticulating below each fertile floret. Rhachilla internodes definite; 1.3-1.5 mm long; pilose. Floret callus pilose. Floret callus hairs 1 mm long; 0.33 length of lemma.
Morphology Reproductive morphology Inflorescences Bracts Glume
Glumes persistent; similar; exceeding apex of florets; similar to fertile lemma in texture; shiny. Lower glume lanceolate; 1 length of upper glume; membranous; 1-keeled; 3 -veined. Lower glume primary vein scaberulous. Lower glume surface asperulous; rough at apex. Lower glume apex acute. Upper glume elliptic; 1.3 length of adjacent fertile lemma; membranous; 1-keeled; 3 -veined. Upper glume primary vein scaberulous. Upper glume surface asperulous; rough at apex. Upper glume apex acute.
Morphology Reproductive morphology Flowers Florets
Fertile lemma oblong; 3 mm long; membranous; shiny; without keel; 5 -veined. Lemma apex dentate; 4 -fid; with outer lobes longer; with lobes 0.5 mm long; awned; 1 -awned. Principal lemma awn dorsal; arising 0.25-0.33 way up back of lemma; geniculate; 3-4.5 mm long overall; clearly exserted from spikelet; with twisted column. Rhachilla extension pilose.
Morphology Reproductive morphology Flowers
Lodicules 2; membranous. Anthers 3; 0.2 mm long. Ovary glabrous.
Morphology Reproductive morphology Fruits
Caryopsis with adherent pericarp. Hilum punctiform.
Distribution
South America: southern South America.
Reference
Aveneae. Fl Pat 1995.

Native to:

Argentina South, Chile Central, Chile South

Deschampsia airiformis (Steud.) Benth. & Hook.f. ex B.D.Jacks. appears in other Kew resources:

Date Reference Identified As Barcode Type Status
Lechler [723], Chile K000307871 isotype

First published in Index Kew. 1: 735 (1893)

Accepted by

  • Soreng, R.J., Davidse, G., Peterson, P.M., Zuloaga, F.O., Judziewicz, E.J., Filgueiras, T.S. & Morrone, O. (eds.) (2005). Catalogue of New World Grasses project. TROPICOS, the Missouri Botanical Garden's on-line taxonomic database http://mobot.mobot.org/W3T/Search/nwgc.html.
  • Zuloaga, F.O., Morrone, O. , Belgrano, M.J., Marticorena, C. & Marchesi, E. (eds.) (2008). Catálogo de las Plantas Vasculares del Cono Sur Monographs in Systematic Botany from the Missouri Botanical Garden 107: 1-3348. Missouri Botanical Garden.

Literature

Kew Backbone Distributions

  • Zuloaga, F.O., Morrone, O. , Belgrano, M.J., Marticorena, C. & Marchesi, E. (eds.) (2008). Catálogo de las Plantas Vasculares del Cono Sur Monographs in Systematic Botany from the Missouri Botanical Garden 107: 1-3348. Missouri Botanical Garden.

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 Selected Plant Families 2021. Published on the Internet at http://www.ipni.org and http://apps.kew.org/wcsp/
© Copyright 2017 World Checklist of Selected Plant Families. http://creativecommons.org/licenses/by/3.0

Kew Names and Taxonomic Backbone
The International Plant Names Index and World Checklist of Selected Plant Families 2021. Published on the Internet at http://www.ipni.org and http://apps.kew.org/wcsp/
© Copyright 2017 International Plant Names Index and World Checklist of Selected Plant Families. http://creativecommons.org/licenses/by/3.0