Poaceae
Agrostis

Agrostis tuvinica Peschkova

First published in Fl. Sibir. 2: 111 (2001)
This species is accepted
The native range of this species is Siberia to Mongolia. It is a perennial and grows primarily in the temperate biome.

Descriptions

Morphology General Habit
Perennial. Rhizomes short. Culms 15-55 cm long. Ligule an eciliate membrane; 1-2 mm long. Leaf-blades 1-2(-3.5) mm wide; light green. Leaf-blade surface scabrous. Leaf-blade margins scabrous. Leaf-blade apex acuminate.
Morphology Reproductive morphology Inflorescences
Inflorescence a panicle. Panicle open, or contracted; lanceolate; 5-13 cm long; 1-3 cm wide. Primary panicle branches ascending. Panicle branches smooth, or scaberulous. Spikelets solitary. Fertile spikelets pedicelled. Pedicels filiform; terete.
Morphology Reproductive morphology Inflorescences Spikelets
Spikelets comprising 1 fertile florets; without rhachilla extension. Spikelets elliptic; laterally compressed; 2-2.5 mm long; breaking up at maturity; disarticulating below each fertile floret.
Fertile
Spikelets comprising 1 fertile florets; without rhachilla extension. Spikelets elliptic; laterally compressed; 2-2.5 mm long; breaking up at maturity; disarticulating below each fertile floret.
Morphology Reproductive morphology Inflorescences Bracts Glume
Glumes persistent; similar; exceeding apex of florets; firmer than fertile lemma; shiny; gaping. Lower glume lanceolate; 2-2.5 mm long; 1.1 length of upper glume; membranous; purple; 1-keeled; 1 -veined. Lower glume primary vein scabrous. Lower glume lateral veins absent. Lower glume apex acute. Upper glume lanceolate; 1.9-2.4 mm long; 1.2 length of adjacent fertile lemma; membranous; purple; 1-keeled; 1 -veined. Upper glume primary vein scabrous. Upper glume lateral veins absent. Upper glume apex acute.
Morphology Reproductive morphology Flowers Florets
Fertile lemma oblong; 1.7-2 mm long; hyaline; without keel; 5 -veined. Lemma apex truncate; awned; 1 -awned. Principal lemma awn dorsal; arising 0.33-0.5 way up back of lemma; geniculate; with twisted column. Palea absent or minute.
Morphology Reproductive morphology Flowers
Anthers 3; 0.8-1.2 mm long.
Distribution
Asia-temperate: Siberia.
Reference
Aveneae. Fl Sib 2005.
[GB]

Sources

  • 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

  • Kew Backbone Distributions

    • The International Plant Names Index and World Checklist of Vascular Plants 2023. Published on the Internet at http://www.ipni.org and https://powo.science.kew.org/
    • © Copyright 2022 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 2023. Published on the Internet at http://www.ipni.org and https://powo.science.kew.org/
    • © Copyright 2022 International Plant Names Index and World Checklist of Vascular Plants. http://creativecommons.org/licenses/by/3.0