Puccinellia roborovskyi Tzvelev

First published in Trudy Bot. Inst. Akad. Nauk S.S.S.R., Rast. Tsentral. Azii 4: 15 (1968)
This species is accepted
The native range of this species is Qinghai to Tibet. It is a perennial and grows primarily in the subalpine or subarctic biome.

Descriptions

Morphology General Habit
Perennial; caespitose; clumped loosely. Basal innovations intravaginal. Culms 20-40 cm long. Leaf-sheaths open for most of their length; smooth; glabrous on surface. Ligule an eciliate membrane; 0.8-2 mm long. Leaf-blades convolute; 0.5-1.2 mm wide; glaucous. Leaf-blade surface smooth; glabrous.
Morphology Reproductive morphology Inflorescences
Inflorescence a panicle. Peduncle smooth, or scaberulous above. Panicle open; ovate; effuse; 5-10 cm long; bearing few spikelets. Primary panicle branches 3-6 cm long; bearing 1-4 fertile spikelets on each lower branch. Panicle branches scabrous; rough distally. Spikelets solitary. Fertile spikelets pedicelled.
Morphology Reproductive morphology Inflorescences Spikelets
Spikelets comprising 3-5 fertile florets; with diminished florets at the apex. Spikelets oblong; laterally compressed; 3.5-6 mm long; breaking up at maturity; disarticulating below each fertile floret.
Fertile
Spikelets comprising 3-5 fertile florets; with diminished florets at the apex. Spikelets oblong; laterally compressed; 3.5-6 mm long; breaking up at maturity; disarticulating below each fertile floret.
Morphology Reproductive morphology Inflorescences Bracts Glume
Glumes persistent; shorter than spikelet. Lower glume linear; membranous; much thinner above; much thinner on margins; without keels. Lower glume apex obtuse, or acute. Upper glume lanceolate; membranous; without keels. Upper glume apex obtuse, or acute.
Morphology Reproductive morphology Flowers Florets
Fertile lemma lanceolate; 2.8-4.2 mm long; membranous; much thinner above; much thinner on margins; without keel; 5 -veined. Lemma lateral veins obscure; stopping well short of apex. Lemma surface pilose; hairy at base. Lemma apex acute. Palea 1 length of lemma; 2 -veined. Palea keels scabrous; eciliate, or ciliolate; adorned with hairs above. Apical sterile florets resembling fertile though underdeveloped.
Morphology Reproductive morphology Flowers
Anthers 3; 1-1.3 mm long. Ovary glabrous.
Morphology Reproductive morphology Fruits
Caryopsis with adherent pericarp. Hilum punctiform.
Distribution
Asia-temperate: China.
Reference
Poeae. Pl Cent Asia 1996.
[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