Poaceae
Agropyron

Agropyron tanaiticum Nevski

First published in Trudy Sredne-Aziatsk. Gosud. Univ., Ser. 8b, Bot. 17: 56 (1934)
This species is accepted
The native range of this species is E. Ukraine to European Russia. It is a perennial and grows primarily in the temperate biome.

Descriptions

IUCN Red List of Threatened Species https://www.iucnredlist.org/species/176535/7261335

Conservation
NT - near threatened
[IUCN]

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. Rhizomes elongated. Culms 30-80 cm long. Culm-internodes distally glabrous. Leaf-sheaths glabrous on surface, or pubescent. Leaf-sheath auricles absent. Ligule an eciliate membrane; 3-5 mm long. Leaf-blades flat, or convolute; 8-15 cm long; 2-5 mm wide. Leaf-blade surface puberulous; hairy adaxially.
Morphology Reproductive morphology Inflorescences
Inflorescence composed of racemes. Racemes 1; single; linear; bilateral; 5-16 cm long; 5-7 mm wide. Rhachis glabrous on surface, or pubescent on surface. Spikelet packing broadside to rhachis; lax. Rhachis internodes oblong. Spikelets ascending; solitary. Fertile spikelets sessile.
Morphology Reproductive morphology Inflorescences Spikelets
Spikelets comprising 3-4 fertile florets; with diminished florets at the apex. Spikelets oblong; laterally compressed; 7-12 mm long; breaking up at maturity; disarticulating below each fertile floret.
Fertile
Spikelets comprising 3-4 fertile florets; with diminished florets at the apex. Spikelets oblong; laterally compressed; 7-12 mm long; breaking up at maturity; disarticulating below each fertile floret.
Morphology Reproductive morphology Inflorescences Bracts Glume
Glumes persistent; similar; shorter than spikelet; firmer than fertile lemma. Lower glume lanceolate; 3-7 mm long; 1 length of upper glume; coriaceous; 1-keeled; keeled all along; 1 -veined. Lower glume primary vein eciliate, or ciliate. Lower glume lateral veins absent. Lower glume apex acuminate; muticous. Upper glume lanceolate; 5-7 mm long; 0.5 length of adjacent fertile lemma; coriaceous; 1-keeled; keeled all along; 1 -veined. Upper glume primary vein eciliate, or ciliate. Upper glume lateral veins absent. Upper glume apex acuminate; muticous.
Morphology Reproductive morphology Flowers Florets
Fertile lemma elliptic; 6-8 mm long; chartaceous; keeled; 5 -veined. Lemma surface pubescent, or pilose. Lemma apex acute. Palea keels ciliate; with 1-10 enations per keel. Apical sterile florets resembling fertile though underdeveloped.
Morphology Reproductive morphology Flowers
Anthers 4.5-5 mm long. Ovary with a fleshy appendage below style insertion; pubescent on apex.
Morphology Reproductive morphology Fruits
Caryopsis with adherent pericarp; oblong; sulcate on hilar side; hairy at apex; apex fleshy. Embryo 0.2 length of caryopsis. Hilum linear; 1 length of caryopsis. Disseminule comprising a floret.
Distribution
Europe: eastern.
Reference
Triticeae. Fl Eur 1993.
[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/

  • IUCN Categories

    • IUCN Red List of Threatened Species
    • http://creativecommons.org/licenses/by-nc-sa/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