Poaceae
Achnatherum

Achnatherum staintonii (Bor) M.Nobis & P.D.Gudkova

First published in PhytoKeys 128: 112 (2019)
This species is accepted
The native range of this species is Nepal. It is a perennial and grows primarily in the temperate 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: threatened. Confidence: low confidence
[AERP]

Morphology General Habit
Perennial; caespitose. Culms erect; 30-60 cm long. Leaf-sheaths tight; retrorsely scabrous; glabrous on surface; outer margin hairy. Leaf-sheath oral hairs bearded. Ligule an eciliate membrane; 0.75 mm long. Leaf-blades involute; 15-35 cm long; 2-3 mm wide. Leaf-blade surface pubescent; hairy adaxially.
Morphology Reproductive morphology Inflorescences
Inflorescence a panicle. Panicle open; nodding; 10-15 cm long. Spikelets solitary. Fertile spikelets pedicelled.
Morphology Reproductive morphology Inflorescences Spikelets
Spikelets comprising 1 fertile florets; without rhachilla extension. Spikelets lanceolate; subterete; 11-13 mm long; breaking up at maturity; disarticulating below each fertile floret. Floret callus evident; 0.75 mm long; pubescent; acute.
Fertile
Spikelets comprising 1 fertile florets; without rhachilla extension. Spikelets lanceolate; subterete; 11-13 mm long; breaking up at maturity; disarticulating below each fertile floret. Floret callus evident; 0.75 mm long; pubescent; acute.
Morphology Reproductive morphology Inflorescences Bracts Glume
Glumes persistent; similar; exceeding apex of florets; thinner than fertile lemma. Lower glume lanceolate; 11-13 mm long; 1.2-1.3 length of upper glume; hyaline; purple; without keels; 3 -veined. Lower glume apex acuminate. Upper glume elliptic; 8-11 mm long; hyaline; purple; without keels; 3 -veined. Upper glume apex acuminate.
Morphology Reproductive morphology Flowers Florets
Fertile lemma lanceolate; subterete; 5.5 mm long; coriaceous; without keel; 5 -veined. Lemma surface pilose. Lemma margins convolute; covering most of palea. Lemma hairs 2-3 mm long. Lemma apex dentate; 2 -fid; awned; 1 -awned. Principal lemma awn from a sinus; bigeniculate; 30-40 mm long overall; with twisted column. Column of lemma awn glabrous. Palea 1 length of lemma; 2 -veined; without keels. Palea surface pilose; hairy on back.
Morphology Reproductive morphology Flowers
Lodicules 2. Anthers 3; 2.5 mm long; anther tip penicillate. Stigmas 2. Ovary glabrous.
Morphology Reproductive morphology Fruits
Caryopsis with adherent pericarp. Hilum linear.
Distribution
Asia-tropical: India.
Reference
Stipeae. Bor 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

    • '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 2025. 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 2025. 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