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This species is accepted, and its native range is Argentina (Mendoza).

[GB]
Morphology General Habit
Perennial; caespitose; clumped loosely. Rhizomes short. Culms erect; 20-25 cm long. Leaves mostly basal. Leaf-sheaths striately veined; smooth; glabrous on surface. Ligule an eciliate membrane; 4-6 mm long; acute. Leaf-blades curved; filiform; conduplicate; 6-8 cm long; 0.5-1 mm wide. Leaf-blade surface glabrous.
Morphology Reproductive morphology Inflorescences
Inflorescence a panicle. Panicle contracted; oblong; 5-7 cm long; 1-1.5 cm wide. Primary panicle branches appressed; 2-3 cm long; bearing spikelets almost to the base. Panicle branches glabrous, or puberulous. Spikelets solitary. Fertile spikelets pedicelled. Pedicels scabrous; glabrous.
Morphology Reproductive morphology Inflorescences Spikelets
Spikelets comprising 2 fertile florets; with a barren rhachilla extension. Spikelets lanceolate, or oblong; laterally compressed; 3.8-4 mm long; breaking up at maturity; disarticulating above glumes but not between florets. Rhachilla internodes definite; 1 mm long; villous; with 1.5 mm long hairs. Floret callus bearded. Floret callus hairs 1.5 mm long; 0.33 length of lemma.
Fertile
Spikelets comprising 2 fertile florets; with a barren rhachilla extension. Spikelets lanceolate, or oblong; laterally compressed; 3.8-4 mm long; breaking up at maturity; disarticulating above glumes but not between florets. Rhachilla internodes definite; 1 mm long; villous; with 1.5 mm long hairs. Floret callus bearded. Floret callus hairs 1.5 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; 3.6-3.8 mm long; 0.9 length of upper glume; membranous; much thinner on margins; purple; 1-keeled; 1 -veined. Lower glume lateral veins absent. Lower glume apex acute. Upper glume lanceolate; 3.8-4 mm long; 1.5 length of adjacent fertile lemma; membranous; with scarious margins; purple; 1-keeled; 3 -veined. Upper glume apex acute.
Morphology Reproductive morphology Flowers Florets
Fertile lemma oblong; 2.5 mm long; membranous; much thinner above; dark brown; shiny; without keel; 5 -veined. Lemma apex dentate; 4 -fid; with simple equal lobes; awned; 1 -awned. Principal lemma awn dorsal; arising 0.1 way up back of lemma; straight; 3 mm long overall. Palea 1 length of lemma. Rhachilla extension 1 mm long; pubescent.
Morphology Reproductive morphology Flowers
Lodicules 2; membranous. Anthers 3; 0.8-1 mm long. Ovary glabrous.
Morphology Reproductive morphology Fruits
Caryopsis with adherent pericarp. Hilum punctiform.
Distribution
South America: southern South America.
Reference
Aveneae. Parodi 1997.

Native to:

Argentina Northwest

Deschampsia mendocina Parodi appears in other Kew resources:

First published in Darwiniana 8: 447 (1949)

Accepted by

  • Clayton, W.D., Harman, K.T. & Williamson, H. (2006). World Grass Species - Synonymy database The Board of Trustees of the Royal Botanic Gardens, Kew.
  • 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

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