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This species is accepted, and its native range is Magellan Reg.

[GB]
Morphology General Habit
Perennial. Rhizomes short. Butt sheaths persistent and investing base of culm; with fibrous dead sheaths. Culms 40-60 cm long; 2-3 -noded. Culm-nodes brown; glabrous. Leaf-sheaths smooth; glabrous on surface. Ligule an eciliate membrane; 4.5-5 mm long; erose; acute. Leaf-blades conduplicate, or involute; 5-20 cm long; 2-3 mm wide; stiff. Leaf-blade surface glabrous.
Morphology Reproductive morphology Inflorescences
Inflorescence a panicle. Panicle open; elliptic; 7-11 cm long. Spikelets solitary. Fertile spikelets pedicelled. Pedicels smooth, or scaberulous.
Morphology Reproductive morphology Inflorescences Spikelets
Spikelets comprising 1 fertile florets; without rhachilla extension, or with a barren rhachilla extension. Spikelets lanceolate; laterally compressed; 5-6.5 mm long; breaking up at maturity; disarticulating below each fertile floret. Rhachilla internodes elongated below proximal fertile floret. Rhachilla elongation 0.5 mm long. Floret callus bearded. Floret callus hairs 1 length of lemma.
Fertile
Spikelets comprising 1 fertile florets; without rhachilla extension, or with a barren rhachilla extension. Spikelets lanceolate; laterally compressed; 5-6.5 mm long; breaking up at maturity; disarticulating below each fertile floret. Rhachilla internodes elongated below proximal fertile floret. Rhachilla elongation 0.5 mm long. Floret callus bearded. Floret callus hairs 1 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 lateral veins absent. Lower glume surface scabrous. Lower glume apex acute. Upper glume lanceolate; 1.7-1.8 length of adjacent fertile lemma; membranous; purple; 1-keeled; 3 -veined. Upper glume surface scabrous. Upper glume apex acute.
Morphology Reproductive morphology Flowers Florets
Fertile lemma lanceolate; 3-3.5 mm long; membranous; without keel. Lemma surface scaberulous. Lemma apex erose; obtuse; awned; 1 -awned. Principal lemma awn dorsal; arising 0.33-0.66 way up back of lemma; straight, or geniculate; 3-4.5 mm long overall; without a column, or with a straight or slightly twisted column. Palea 2.6-2.8 mm long. Palea keels scabrous. Rhachilla extension 3-4.5 mm long; pilose.
Morphology Reproductive morphology Flowers
Lodicules 2; 0.9-1.3 mm long. Anthers 3; 0.9-1.5 mm long. Stigmas 2.
Morphology Reproductive morphology Fruits
Caryopsis with adherent pericarp; sulcate on hilar side; 2 mm long. Embryo 0.25 length of caryopsis. Hilum punctiform. Endosperm farinose. Disseminule comprising a floret.
Distribution
South America: southern South America.
Reference
Aveneae. Fl Pat 1995.

Native to:

Argentina South, Chile South

Calamagrostis suka Speg. appears in other Kew resources:

First published in Anales Mus. Nac. Buenos Aires 5: 85 (1896)

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.

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