Poaceae
Ptilagrostis

Ptilagrostis mongholica (Turcz. ex Trin.) Griseb.

First published in C.F.von Ledebour, Fl. Ross. 4: 447 (1852)
This species is accepted
The native range of this species is Central Asia to Siberia and N. China. 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: not threatened. Confidence: confident
[AERP]

Morphology General Habit
Perennial; caespitose; clumped densely. Culms erect; 15-60 cm long. Culm-internodes mid-green, or purple; distally glabrous. Leaves basal and cauline. Leaf-sheaths mostly shorter than adjacent culm internode; scaberulous; glabrous on surface. Ligule an eciliate membrane; obtuse. Leaf-blades filiform; 1-2 mm wide. Leaf-blade venation with 3-7 secondary veins. Leaf-blade surface scabrous.
Morphology Reproductive morphology Inflorescences
Inflorescence a panicle; comprising 8-20 fertile spikelets. Panicle open; ovate; 5-15 cm long; bearing few spikelets. Spikelets solitary. Fertile spikelets pedicelled.
Morphology Reproductive morphology Inflorescences Spikelets
Spikelets comprising 1 fertile florets; without rhachilla extension. Spikelets lanceolate; subterete; 4.5-6.5 mm long; breaking up at maturity; disarticulating below each fertile floret. Floret callus brief; 0.2-0.8 mm long; pubescent; acute.
Fertile
Spikelets comprising 1 fertile florets; without rhachilla extension. Spikelets lanceolate; subterete; 4.5-6.5 mm long; breaking up at maturity; disarticulating below each fertile floret. Floret callus brief; 0.2-0.8 mm long; pubescent; acute.
Morphology Reproductive morphology Inflorescences Bracts Glume
Glumes persistent; similar; subequal in width; exceeding apex of florets; thinner than fertile lemma. Lower glume lanceolate; 1 length of upper glume; hyaline; pallid and purple. Lower glume apex acute. Upper glume lanceolate; 4.5-6.5 mm long; hyaline; pallid and purple; without keels. Upper glume apex acute.
Morphology Reproductive morphology Flowers Florets
Fertile lemma linear to lanceolate; subterete; 3.3-5.3 mm long; coriaceous; dark brown; without keel; 3 -veined. Lemma surface puberulous; hairy below; hairy on veins. Lemma margins convolute; covering most of palea. Lemma apex dentate; 2 -fid; awned; 1 -awned. Principal lemma awn from a sinus; bigeniculate; 15-30 mm long overall; with twisted column; limb plumose. Middle segment of lemma awn plumose. Column of lemma awn plumose. Palea 2 -veined; without keels.
Morphology Reproductive morphology Flowers
Lodicules 3. Anthers 3; anther tip smooth, or pubescent. Stigmas 2. Ovary glabrous.
Morphology Reproductive morphology Fruits
Caryopsis with adherent pericarp.
Distribution
Asia-temperate: Siberia, Soviet Middle Asia, China, Mongolia, and eastern Asia. Asia-tropical: India.
Reference
Stipeae. Fl USSR 1996.
[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

  • Kew Science Photographs

    • Copyright applied to individual images