Poaceae
Echinopogon

Echinopogon ovatus (G.Forst.) P.Beauv.

First published in Ess. Agrostogr.: 42 (1812)
This species is accepted
The native range of this species is Lesser Sunda Islands to New Guinea, S. & E. Australia to New Zealand. It is a perennial and grows primarily in the subtropical 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, or caespitose; clumped loosely. Rhizomes elongated. Culms geniculately ascending; 15-70 cm long; 3-7 -noded. Culm-internodes retrorsely scabrous. Lateral branches lacking. Leaf-sheaths smooth, or retrorsely scabrous; glabrous on surface, or pilose. Ligule an eciliate membrane; 2 mm long; truncate. Leaf-blades spreading, or reflexed; linear, or lanceolate; 1.5-16 cm long; 2-8 mm wide. Leaf-blade surface smooth, or scaberulous; glabrous. Leaf-blade margins scaberulous. Leaf-blade apex acuminate.
Morphology Reproductive morphology Inflorescences
Inflorescence a panicle. Peduncle straight; retrorsely scabrous above. Panicle capitate; oblong, or ovate; 0.8-5 cm long; 1-2.5 cm wide. Spikelets spreading; solitary. Fertile spikelets pedicelled. Pedicels oblong.
Morphology Reproductive morphology Inflorescences Spikelets
Spikelets comprising 1 fertile florets; with a barren rhachilla extension. Spikelets oblong; laterally compressed; 3.5-5 mm long; breaking up at maturity; disarticulating below each fertile floret.
Fertile
Spikelets comprising 1 fertile florets; with a barren rhachilla extension. Spikelets oblong; laterally compressed; 3.5-5 mm long; breaking up at maturity; disarticulating below each fertile floret.
Morphology Reproductive morphology Inflorescences Bracts Glume
Glumes persistent; similar; reaching apex of florets; thinner than fertile lemma. Lower glume lanceolate; 3.5-5 mm long; 1 length of upper glume; membranous; 1-keeled; 1 -veined. Lower glume primary vein scabrous; ciliolate. Lower glume lateral veins absent. Lower glume apex obtuse, or acute. Upper glume lanceolate; 3.5-5 mm long; 1 length of adjacent fertile lemma; membranous; 1-keeled; 1 -veined. Upper glume primary vein scabrous; ciliolate. Upper glume lateral veins absent. Upper glume apex obtuse, or acute.
Morphology Reproductive morphology Flowers Florets
Fertile lemma lanceolate; 3.5-5 mm long; cartilaginous; keeled; 5-7 -veined. Lemma apex entire; emarginate; awned; 1 -awned. Principal lemma awn apical; 3-15 mm long overall. Palea 1 length of lemma; 2 -veined. Palea keels ciliolate; adorned above.
Morphology Reproductive morphology Flowers
Anthers 3; 1-1.5 mm long. Ovary pubescent on apex.
Morphology Reproductive morphology Fruits
Caryopsis with adherent pericarp; oblong; 2-2.5 mm long; hairy at apex. Hilum linear.
Distribution
Asia-tropical: Malesia and Papuasia. Australasia: Australia and New Zealand.
Reference
Aveneae. CEH.
[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

    • '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 Vascular Plants 2024. 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 2024. 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