Poaceae
Eriachne

Eriachne minuta Lazarides

First published in Austral. Syst. Bot. 8: 395 (1995)
This species is accepted
The native range of this species is N. Northern Territory. It is an annual and grows primarily in the seasonally dry tropical biome.

Descriptions

Morphology General Habit
Annual; caespitose. Culms erect, or geniculately ascending; 4.5-15 cm long; 2-3 -noded. Culm-internodes terete, or elliptical in section; distally glabrous. Culm-nodes glabrous. Lateral branches ample. Leaf-sheaths loose; mostly shorter than adjacent culm internode. Ligule a fringe of hairs; 0.5 mm long. Leaf-blades conduplicate, or involute, or convolute; 2-3 mm wide. Leaf-blade surface hispid; with simple hairs, or tubercle-based hairs. Leaf-blade apex acuminate.
Morphology Reproductive morphology Inflorescences
Inflorescence a panicle. Peduncle pilose above. Panicle open; oblong; 3-6 cm long; 1-4 cm wide. Panicle branches pilose; glabrous in axils, or bearded in axils; with prominent pulvini. Spikelets solitary. Fertile spikelets pedicelled. Pedicels 3-6 mm long.
Morphology Reproductive morphology Inflorescences Spikelets
Spikelets comprising 2 fertile florets; without rhachilla extension. Spikelets ovate; laterally compressed; compressed slightly; 1.5-1.8 mm long; breaking up at maturity; disarticulating below each fertile floret. Floret callus 0.2-0.3 mm long; bearded; acute.
Fertile
Spikelets comprising 2 fertile florets; without rhachilla extension. Spikelets ovate; laterally compressed; compressed slightly; 1.5-1.8 mm long; breaking up at maturity; disarticulating below each fertile floret. Floret callus 0.2-0.3 mm long; bearded; acute.
Morphology Reproductive morphology Inflorescences Bracts Glume
Glumes persistent; similar; reaching apex of florets; thinner than fertile lemma. Lower glume lanceolate; 1.5-1.8 mm long; 1 length of upper glume; membranous; much thinner on margins; without keels; 3 -veined. Lower glume lateral veins ribbed. Lower glume surface hispidulous; with simple hairs, or tubercle-based hairs. Lower glume apex acuminate. Upper glume lanceolate; 1.5-1.8 mm long; 1 length of adjacent fertile lemma; membranous; with hyaline margins; without keels; 3 -veined. Upper glume lateral veins ribbed. Upper glume surface hispidulous; with simple hairs, or tubercle-based hairs. Upper glume apex acuminate.
Morphology Reproductive morphology Flowers Florets
Fertile lemma elliptic; laterally compressed; 1.3-1.8 mm long; membranous; without keel; 3 -veined. Lemma lateral veins obscure. Lemma surface glabrous. Lemma margins involute; ciliate; hairy all along. Lemma apex acute; awned; 1 -awned. Principal lemma awn 3.5-5.5 mm long overall. Palea 6 mm long; 2 -veined. Palea surface scaberulous; glabrous, or pilose; hairy on back; hairy below. Palea apex entire, or dentate; 2 -fid.
Morphology Reproductive morphology Flowers
Lodicules 2. Anthers 3; 0.2 mm long.
Morphology Reproductive morphology Fruits
Caryopsis with adherent pericarp.
Distribution
Australasia: Australia.
Reference
Eriachneae. Lazarides 1995.
[GB]

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: low confidence
[AERP]

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

    • 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