Poaceae
Echinopogon

Echinopogon intermedius C.E.Hubb.

First published in Hooker's Icon. Pl. 33: t. 3261 (1935)
This species is accepted
The native range of this species is SE. Queensland to New South Wales. 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; caespitose; clumped loosely. Rhizomes elongated. Culms erect, or geniculately ascending; 55-90 cm long; 3-4 -noded. Culm-internodes retrorsely scabrous. Lateral branches lacking. Leaf-sheaths retrorsely scabrous; glabrous on surface. Ligule an eciliate membrane; 1 mm long; truncate. Leaf-blades linear, or lanceolate; 2.5-13 cm long; 3-7 mm wide. Leaf-blade surface scaberulous; glabrous. Leaf-blade apex acuminate.
Morphology Reproductive morphology Inflorescences
Inflorescence a panicle. Peduncle straight; retrorsely scabrous above. Panicle spiciform, or capitate; oblong, or ovate; 3-6 cm long; 2-4 cm wide. Spikelets ascending, or spreading; solitary. Fertile spikelets pedicelled. Pedicels oblong.
Morphology Reproductive morphology Inflorescences Spikelets
Spikelets comprising 1 fertile florets; with a barren rhachilla extension. Spikelets lanceolate; laterally compressed; 5-7 mm long; breaking up at maturity; disarticulating below each fertile floret. Floret callus brief; bearded. Floret callus hairs 2 mm long.
Fertile
Spikelets comprising 1 fertile florets; with a barren rhachilla extension. Spikelets lanceolate; laterally compressed; 5-7 mm long; breaking up at maturity; disarticulating below each fertile floret. Floret callus brief; bearded. Floret callus hairs 2 mm long.
Morphology Reproductive morphology Inflorescences Bracts Glume
Glumes persistent; similar; exceeding apex of florets; thinner than fertile lemma. Lower glume lanceolate; 5-7 mm long; 1 length of upper glume; membranous; 1-keeled; 1 -veined. Lower glume primary vein scabrous; ciliate. Lower glume lateral veins absent. Lower glume apex acuminate. Upper glume lanceolate; 5-7 mm long; 1.2-1.4 length of adjacent fertile lemma; membranous; 1-keeled; 1 -veined. Upper glume primary vein scabrous; ciliate. Upper glume lateral veins absent. Upper glume apex acuminate.
Morphology Reproductive morphology Flowers Florets
Fertile lemma lanceolate; 4-5 mm long; cartilaginous; keeled; 5-7 -veined. Lemma apex dentate; 2 -fid; acute; awned; 3 -awned. Principal lemma awn from a sinus; 10-25 mm long overall. Lateral lemma awns arising on apex of lobes; 2-2.5 mm long; shorter than principal. Palea 1 length of lemma; 2 -veined. Palea keels ciliolate; adorned above.
Morphology Reproductive morphology Flowers
Anthers 3; 1.5-2 mm long. Ovary glabrous.
Morphology Reproductive morphology Fruits
Caryopsis with adherent pericarp; ellipsoid; 3-3.5 mm long; glabrous. Hilum linear.
Distribution
Australasia: Australia.
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