- Family: Poaceae Barnhart
- Genus: Deschampsia P.Beauv.
Deschampsia antarctica É.Desv.
- Genus: Deschampsia P.Beauv.
[GB]
- Morphology General Habit
- Perennial; cushion forming. Culms 10-30 cm long. Ligule an eciliate membrane; 4-8 mm long; acuminate. Leaf-blades filiform; convolute; 2.5-3 mm wide. Leaf-blade surface smooth, or scaberulous.
- Morphology Reproductive morphology Inflorescences
- Inflorescence a panicle; not deciduous as a whole, or deciduous as a whole; exserted, or embraced at base by subtending leaf, or enclosed. Panicle open, or contracted; lanceolate, or pyramidal; 5-20 cm long. Panicle branches capillary; puberulous. Spikelets solitary. Fertile spikelets pedicelled. Pedicels puberulous.
- Morphology Reproductive morphology Inflorescences Spikelets
- Spikelets comprising 2-3 fertile florets; with a barren rhachilla extension. Spikelets lanceolate; laterally compressed; 5-7 mm long; breaking up at maturity; disarticulating below each fertile floret. Rhachilla internodes definite; 1-1.3 mm long; pilose. Floret callus pilose. Floret callus hairs 0.33 length of lemma.
- Fertile
- Spikelets comprising 2-3 fertile florets; with a barren rhachilla extension. Spikelets lanceolate; laterally compressed; 5-7 mm long; breaking up at maturity; disarticulating below each fertile floret. Rhachilla internodes definite; 1-1.3 mm long; pilose. Floret callus pilose. Floret callus hairs 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; 1 -veined. Lower glume primary vein ciliolate. Lower glume lateral veins absent. Lower glume apex acute. Upper glume elliptic; 2-2.3 length of adjacent fertile lemma; membranous; 1-keeled; 3 -veined. Upper glume primary vein ciliolate. Upper glume apex acute.
- Morphology Reproductive morphology Flowers Florets
- Fertile lemma oblong; 2.5-3 mm long; membranous; shiny; without keel; 5 -veined. Lemma surface smooth, or scaberulous; rough above. 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; straight, or geniculate; 3.5-5.5 mm long overall; clearly exserted from spikelet; without a column, or with a straight or slightly twisted column. Rhachilla extension pilose.
- Morphology Reproductive morphology Flowers
- Lodicules 2; membranous. Anthers 3; 0.4-0.5 mm long; retained within floret. Ovary glabrous.
- Morphology Reproductive morphology Fruits
- Caryopsis with adherent pericarp; fusiform; 1-1.2 mm long; dark brown. Hilum punctiform.
- Distribution
- South America: southern South America. Antarctic: Subantarctic islands and Antarctic continent.
- Reference
- Aveneae. Fl Pat 1995.
Native to:
Antarctica, Argentina Northwest, Argentina South, Chile Central, Chile South, Crozet Is., Falkland Is., Heard-McDonald Is., Kerguelen, South Georgia, South Sandwich Is.
Deschampsia antarctica É.Desv. appears in other Kew resources:
| Date | Reference | Identified As | Barcode | Type Status |
|---|---|---|---|---|
| Hooker, J.D. [10], Falkland Is. | K000307869 | |||
| Hooker, J.D. [763], Kerguelen | K000975167 | Unknown type material | ||
| Argentina | K000308344 | |||
| Lechler, W. [1220], Argentina | K000308343 | |||
| Lewis, R. [819], Falkland Is. | K000299686 | |||
| Eights, J. [2], Antarctica | K000951548 | Unknown type material | ||
| Eights, J. [2], Antarctica | K000307868 | Unknown type material |
First published in C.Gay, Fl. Chil. 6: 338 (1854)
Accepted by
- 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.
- Clayton, W.D., Harman, K.T. & Williamson, H. (2006). World Grass Species - Synonymy database The Board of Trustees of the Royal Botanic Gardens, Kew.
- George, A.S., Orchard, A.E. & Hewson, H.J. (eds.) (1993). Oceanic islands 2 Flora of Australia 50: 1-606. Australian Government Publishing Service, Canberra.
- Chastain, A. (1961). La flore et la végétation des Iles Kerguelen Mémoires du Muséum National d'Histoire Naturelle. Serie B. Botanique 11: 1-136.
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.
GrassBase - The Online World Grass Flora
http://creativecommons.org/licenses/by-nc-sa/3.0
Herbarium Catalogue Specimens
'The Herbarium Catalogue, Royal Botanic Gardens, Kew. Published on the Internet http://www.kew.org/herbcat [accessed on Day Month Year]'. Please enter the date on which you consulted the system.
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