Poaceae
Austrostipa

Austrostipa tenuifolia (Steud.) S.W.L.Jacobs & J.Everett

First published in Telopea 6: 589 (1996)
This species is accepted
The native range of this species is SW. Australia to NW. Victoria. It is a perennial and grows primarily in the desert or dry shrubland 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. Culms 30-60 cm long. Ligule a ciliate membrane. Leaf-blades filiform; involute; 1-2 mm wide. Leaf-blade surface smooth, or scaberulous; glabrous.
Morphology Reproductive morphology Inflorescences
Inflorescence a panicle. Panicle open; effuse; 15-30 cm long. Panicle branches capillary. Spikelets solitary. Fertile spikelets pedicelled.
Morphology Reproductive morphology Inflorescences Spikelets
Spikelets comprising 1 fertile florets; without rhachilla extension. Spikelets lanceolate; subterete; 15 mm long; breaking up at maturity; disarticulating below each fertile floret. Floret callus evident; pubescent; acute.
Fertile
Spikelets comprising 1 fertile florets; without rhachilla extension. Spikelets lanceolate; subterete; 15 mm long; breaking up at maturity; disarticulating below each fertile floret. Floret callus evident; pubescent; acute.
Morphology Reproductive morphology Inflorescences Bracts Glume
Glumes persistent; similar; exceeding apex of florets; thinner than fertile lemma. Lower glume lanceolate; 15 mm long; 1.2-1.3 length of upper glume; membranous; without keels; 3 -veined. Lower glume surface asperulous. Lower glume apex acuminate. Upper glume lanceolate; 12 mm long; membranous; without keels; 5 -veined. Upper glume surface asperulous. Upper glume apex acuminate.
Morphology Reproductive morphology Flowers Florets
Fertile lemma lanceolate; subterete; 8 mm long; coriaceous; without keel. Lemma surface pubescent. Lemma margins convolute; covering most of palea. Lemma apex awned; 1 -awned. Principal lemma awn geniculate; 50-70 mm long overall; with twisted column. Column of lemma awn 13 mm long; glabrous. Palea 1 length of lemma; 2 -veined; without keels.
Morphology Reproductive morphology Flowers
Stigmas 2.
Distribution
Australasia: Australia.
Reference
Stipeae. Fl W Austral 1994.
[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

    • 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