Poaceae
Phleum

Phleum iranicum Bornm. & Gauba

First published in Repert. Spec. Nov. Regni Veg. 47: 127 (1939)
This species is accepted
The native range of this species is Iran. It is a perennial and grows primarily in the temperate biome.

Descriptions

Morphology General Habit
Perennial. Rhizomes elongated. Butt sheaths persistent and investing base of culm. Culms geniculately ascending; 20-40 cm long. Lateral branches lacking. Ligule an eciliate membrane. Leaf-blades flat, or involute; 6-12 cm long; 1-2.5 mm wide; glaucous. Leaf-blade surface scaberulous. Leaf-blade margins scaberulous. Leaf-blade apex acuminate.
Morphology Reproductive morphology Inflorescences
Inflorescence a panicle. Panicle spiciform; linear; interrupted; tapering below; 4-8 cm long; 0.3-0.5 cm wide. Primary panicle branches accrescent to a central axis; with evident branchlets on axis. Spikelets solitary. Fertile spikelets pedicelled. Pedicels oblong.
Morphology Reproductive morphology Inflorescences Spikelets
Spikelets comprising 1 fertile florets; without rhachilla extension. Spikelets lanceolate, or oblong; laterally compressed; 4-4.5 mm long; breaking up at maturity; disarticulating below each fertile floret.
Fertile
Spikelets comprising 1 fertile florets; without rhachilla extension. Spikelets lanceolate, or oblong; laterally compressed; 4-4.5 mm long; breaking up at maturity; disarticulating below each fertile floret.
Morphology Reproductive morphology Inflorescences Bracts Glume
Glumes persistent; similar; exceeding apex of florets; gaping. Lower glume oblong; 4-4.5 mm long; 1 length of upper glume; membranous; much thinner on margins; 1-keeled; 3 -veined. Lower glume primary vein ciliate. Lower glume hairs 0.75 mm long. Lower glume apex acuminate; awned; 1 -awned. Lower glume awn 0.5 mm long. Upper glume oblong; 4-4.5 mm long; 1.3 length of adjacent fertile lemma; membranous; with membranous margins; 1-keeled; 3 -veined. Upper glume primary vein ciliate. Upper glume hairs 0.75 mm long. Upper glume apex acuminate; awned; 1 -awned. Upper glume awn 0.5 mm long.
Morphology Reproductive morphology Flowers Florets
Fertile lemma oblong; 3 mm long; membranous; without keel; 5 -veined. Lemma surface pubescent. Lemma apex obtuse.
Morphology Reproductive morphology Flowers
Lodicules 2; membranous. Anthers 3; 1.5-2.5 mm long. Ovary glabrous.
Morphology Reproductive morphology Fruits
Caryopsis with adherent pericarp. Hilum punctiform.
Distribution
Asia-temperate: western Asia.
Reference
Aveneae. Fl Iran 1993.
[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: 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

    • '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