Puccinellia stapfiana R.R.Stewart

First published in Brittonia 5: 418 (1945)
This species is accepted
The native range of this species is Pakistan to Tibet. It is a perennial and grows primarily in the subalpine or subarctic biome.

Descriptions

Morphology General Habit
Perennial; caespitose. Culms erect, or geniculately ascending; 30-45 cm long. Leaf-sheaths open for most of their length. Ligule an eciliate membrane. Leaf-blades conduplicate; 5-10 cm long; 1-2.5 mm wide; glaucous. Leaf-blade surface scaberulous; rough adaxially. Leaf-blade apex acute.
Morphology Reproductive morphology Inflorescences
Inflorescence a panicle. Panicle open; linear, or lanceolate; 6-11 cm long; 1-1.5 cm wide. Primary panicle branches ascending; 2-3 cm long. Panicle branches scabrous. Spikelets solitary. Fertile spikelets pedicelled.
Morphology Reproductive morphology Inflorescences Spikelets
Spikelets comprising 2-4 fertile florets; with diminished florets at the apex. Spikelets oblong; laterally compressed; 5-6 mm long; breaking up at maturity; disarticulating below each fertile floret. Floret callus glabrous.
Fertile
Spikelets comprising 2-4 fertile florets; with diminished florets at the apex. Spikelets oblong; laterally compressed; 5-6 mm long; breaking up at maturity; disarticulating below each fertile floret. Floret callus glabrous.
Morphology Reproductive morphology Inflorescences Bracts Glume
Glumes persistent; dissimilar; shorter than spikelet. Lower glume elliptic; 1.5-2.2 mm long; 0.75 length of upper glume; membranous; without keels; 1 -veined. Lower glume lateral veins absent. Lower glume margins ciliolate. Lower glume apex obtuse. Upper glume elliptic; 2-2.8 mm long; 0.66-0.75 length of adjacent fertile lemma; membranous; without keels; 3 -veined. Upper glume margins ciliolate. Upper glume apex obtuse.
Morphology Reproductive morphology Flowers Florets
Fertile lemma elliptic, or oblong; 3-3.5 mm long; membranous; much thinner above; without keel; 5 -veined. Lemma midvein extending to apex. Lemma lateral veins obscure; stopping well short of apex. Lemma margins ciliolate; hairy above. Lemma apex obtuse. Palea 1 length of lemma; 2 -veined. Palea keels scabrous; adorned above. Apical sterile florets resembling fertile though underdeveloped.
Morphology Reproductive morphology Flowers
Anthers 3; 2 mm long. Ovary glabrous.
Morphology Reproductive morphology Fruits
Caryopsis with adherent pericarp. Hilum punctiform.
Distribution
Asia-temperate: China. Asia-tropical: India.
Reference
Poeae. Fl Pak 1993.
[GB]

Sources

  • 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 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