Puccinellia przewalskii Tzvelev

First published in Bot. Mater. Gerb. Bot. Inst. Komarova Akad. Nauk S.S.S.R. 17: 63 (1955)
This species is accepted
The native range of this species is Mongolia to China (Gansu) and Qinghai. It is a perennial and grows primarily in the temperate biome.

Descriptions

Morphology General Habit
Perennial; caespitose; clumped loosely. Butt sheaths red. Basal innovations extravaginal and intravaginal. Culms erect, or geniculately ascending; 25-40 cm long. Culm-internodes smooth. Leaf-sheaths open for most of their length; smooth. Ligule an eciliate membrane; 2 mm long; obtuse, or acute. Leaf-blades convolute; 5-10 cm long; 1-3 mm wide; stiff; grey-green. Leaf-blade surface scaberulous; rough adaxially. Leaf-blade apex acute.
Morphology Reproductive morphology Inflorescences
Inflorescence a panicle. Panicle open; lanceolate; 8-14 cm long. Primary panicle branches appressed; 2-5 cm long. Panicle branches smooth, or scaberulous. Spikelets solitary. Fertile spikelets pedicelled.
Morphology Reproductive morphology Inflorescences Spikelets
Spikelets comprising 3-7 fertile florets; with diminished florets at the apex. Spikelets oblong; laterally compressed; 5-10 mm long; breaking up at maturity; disarticulating below each fertile floret. Floret callus glabrous, or sparsely hairy.
Fertile
Spikelets comprising 3-7 fertile florets; with diminished florets at the apex. Spikelets oblong; laterally compressed; 5-10 mm long; breaking up at maturity; disarticulating below each fertile floret. Floret callus glabrous, or sparsely hairy.
Morphology Reproductive morphology Inflorescences Bracts Glume
Glumes persistent; shorter than spikelet. Lower glume lanceolate; 1.1-1.5 mm long; 0.66 length of upper glume; membranous; without keels; 1 -veined. Lower glume lateral veins absent. Lower glume apex obtuse. Upper glume elliptic; 1.8-2.6 mm long; 0.66 length of adjacent fertile lemma; membranous; without keels; 3 -veined. Upper glume apex obtuse.
Morphology Reproductive morphology Flowers Florets
Fertile lemma oblong, or ovate; 2.8-3.9 mm long; membranous; much thinner above; much thinner on margins; light green; without keel; 5 -veined. Lemma midvein extending to apex. Lemma lateral veins obscure; stopping well short of apex. Lemma margins ciliolate. Lemma apex obtuse. Palea 1 length of lemma; 2 -veined. Palea keels spinulose; adorned above. Apical sterile florets resembling fertile though underdeveloped.
Morphology Reproductive morphology Flowers
Anthers 3; 1.8-2.4 mm long. Ovary glabrous.
Morphology Reproductive morphology Fruits
Caryopsis with adherent pericarp. Hilum punctiform.
Distribution
Asia-temperate: China and Mongolia.
Reference
Poeae. Tsvelev 1997.
[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