Puccinellia nipponica Ohwi

First published in Bot. Mag. (Tokyo) 45: 379 (1931)
This species is accepted
The native range of this species is Russian Far East to China (Liaoning, Nei Mongol), Korea, Japan (N. Honshu). It is a perennial and grows primarily in the temperate biome.

Descriptions

Morphology General Habit
Perennial; caespitose; clumped loosely. Culms erect, or geniculately ascending; 30-100 cm long; 2-3 -noded. Culm-internodes 3-20 cm long. Leaves mostly basal. Ligule an eciliate membrane; 2-3 mm long; white. Leaf-blades flat, or involute; 10-20 cm long; 2-3 mm wide; glaucous. Leaf-blade apex abruptly acute.
Morphology Reproductive morphology Inflorescences
Inflorescence a panicle; exserted, or embraced at base by subtending leaf. Panicle open; lanceolate, or ovate; 7-20 cm long; 3.5-6 cm wide. Primary panicle branches ascending; 3-6 -nate; 4-8 cm long; bearing spikelets almost to the base. Spikelets solitary. Fertile spikelets pedicelled.
Morphology Reproductive morphology Inflorescences Spikelets
Spikelets comprising 3-4 fertile florets; with diminished florets at the apex. Spikelets oblong; laterally compressed; compressed slightly; 4-6 mm long; 2-2.5 mm wide; breaking up at maturity; disarticulating below each fertile floret.
Fertile
Spikelets comprising 3-4 fertile florets; with diminished florets at the apex. Spikelets oblong; laterally compressed; compressed slightly; 4-6 mm long; 2-2.5 mm wide; breaking up at maturity; disarticulating below each fertile floret.
Morphology Reproductive morphology Inflorescences Bracts Glume
Glumes persistent; dissimilar; shorter than spikelet. Lower glume lanceolate; 2-2.5 mm long; 0.75 length of upper glume; membranous; without keels; 1 -veined. Lower glume lateral veins absent. Lower glume apex acute. Upper glume lanceolate; 2.7-3.2 mm long; 0.9 length of adjacent fertile lemma; membranous; without keels; 3 -veined. Upper glume apex acute.
Morphology Reproductive morphology Flowers Florets
Fertile lemma elliptic, or oblong; 3-3.5 mm long; membranous; much thinner above; without keel; 5 -veined. Lemma lateral veins stopping well short of apex. Lemma surface pubescent; hairy at base. Lemma apex acute. Palea 1 length of lemma; 2 -veined. Apical sterile florets resembling fertile though underdeveloped.
Morphology Reproductive morphology Flowers
Anthers 3; 0.7 mm long. Ovary glabrous.
Morphology Reproductive morphology Fruits
Caryopsis with adherent pericarp. Hilum punctiform.
Distribution
Asia-temperate: Soviet far east, China, and eastern Asia.
Reference
Poeae. CEH.
[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