Puccinellia choresmica (V.I.Krecz.) V.I.Krecz. ex Drobov

First published in Fl. Uzbekistan. 1: 252 (1941)
This species is accepted
The native range of this species is Caucasus, Central Asia. It is a biennial and grows primarily in the temperate biome.

Descriptions

Morphology General Habit
Perennial; caespitose. Culms geniculately ascending; 10-30 cm long. Leaf-sheaths open for most of their length. Ligule an eciliate membrane. Leaf-blades involute; 1-2 mm wide.
Morphology Reproductive morphology Inflorescences
Inflorescence a panicle. Panicle open; linear, or elliptic; 10 cm long. Primary panicle branches ascending, or spreading. Panicle branches scabrous. Spikelets solitary. Fertile spikelets pedicelled.
Morphology Reproductive morphology Inflorescences Spikelets
Spikelets comprising 5-8 fertile florets; with diminished florets at the apex. Spikelets elliptic, or oblong; laterally compressed; compressed slightly; 5-7 mm long; breaking up at maturity; disarticulating below each fertile floret.
Fertile
Spikelets comprising 5-8 fertile florets; with diminished florets at the apex. Spikelets elliptic, or oblong; laterally compressed; compressed slightly; 5-7 mm long; breaking up at maturity; disarticulating below each fertile floret.
Morphology Reproductive morphology Inflorescences Bracts Glume
Glumes persistent; shorter than spikelet. Lower glume ovate; 1.5-1.8 mm long; 0.75 length of upper glume; membranous; without keels; 1 -veined. Lower glume lateral veins absent. Lower glume surface puberulous. Lower glume apex obtuse. Upper glume ovate; 2-2.5 mm long; 1 length of adjacent fertile lemma; membranous; without keels; 3 -veined. Upper glume surface puberulous. Upper glume apex obtuse.
Morphology Reproductive morphology Flowers Florets
Fertile lemma obovate; 2-2.5 mm long; membranous; much thinner above; keeled; lightly keeled; 5 -veined. Lemma lateral veins obscure; stopping well short of apex. Lemma surface pilose; hairy at base. Lemma apex obtuse. Palea 1 length of lemma; 2 -veined. Palea keels ciliolate; adorned all along. Apical sterile florets resembling fertile though underdeveloped.
Morphology Reproductive morphology Flowers
Anthers 3; 0.6-0.8 mm long. Ovary glabrous.
Morphology Reproductive morphology Fruits
Caryopsis with adherent pericarp. Hilum punctiform.
Distribution
Europe: eastern. Asia-temperate: Soviet Middle Asia and Caucasus.
Reference
Poeae. Fl USSR 1995.
[GB]

Sources

  • 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 2022. 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 2022. 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