Puccinellia parvula Hitchc.

First published in Contr. U.S. Natl. Herb. 24: 325 (1927)
This species is accepted
The native range of this species is Bolivia to NW. Argentina. It is a perennial and grows primarily in the subalpine or subarctic biome.

Descriptions

Morphology General Habit
Perennial; caespitose; clumped densely. Culms 5-10 cm long. Leaf-sheaths open for most of their length. Ligule an eciliate membrane; 1 mm long; truncate. Leaf-blades flat, or involute; 1-3 cm long; 1 mm wide.
Morphology Reproductive morphology Inflorescences
Inflorescence a panicle; subtended by an inflated leaf-sheath; enclosed. Panicle contracted; linear; 2-4 cm long. Spikelets solitary. Fertile spikelets pedicelled. Pedicels oblong; 0.5 mm long.
Morphology Reproductive morphology Inflorescences Spikelets
Spikelets comprising 2-3 fertile florets; with diminished florets at the apex. Spikelets oblong; laterally compressed; compressed slightly; 2 mm long; breaking up at maturity; disarticulating below each fertile floret.
Fertile
Spikelets comprising 2-3 fertile florets; with diminished florets at the apex. Spikelets oblong; laterally compressed; compressed slightly; 2 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; 0.5 mm long; 0.5 length of upper glume; membranous; without keels; 1 -veined. Lower glume lateral veins absent. Lower glume apex acute. Upper glume ovate; 1 mm long; 0.75 length of adjacent fertile lemma; membranous; without keels; 3 -veined. Upper glume apex obtuse.
Morphology Reproductive morphology Flowers Florets
Fertile lemma elliptic, or oblong; 1.5 mm long; membranous; much thinner above; without keel; 5 -veined. Lemma lateral veins obscure; stopping well short of apex. Lemma apex erose; obtuse. Palea 1 length of lemma; 2 -veined. Apical sterile florets resembling fertile though underdeveloped.
Morphology Reproductive morphology Flowers
Anthers 3. Ovary glabrous.
Morphology Reproductive morphology Fruits
Caryopsis with adherent pericarp. Hilum punctiform.
Distribution
South America: western South America and southern South America.
Reference
Poeae. Hitchc 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