Puccinellia parishii Hitchc.

First published in Proc. Biol. Soc. Washington 41: 157 (1928)
This species is accepted
The native range of this species is W. Central U.S.A. to W. Texas. It is an annual and grows primarily in the temperate biome.

Descriptions

Morphology General Habit
Annual; caespitose. Culms geniculately ascending; 3-10 cm long. Ligule an eciliate membrane; 0.5-1 mm long; erose; obtuse. Leaf-blades flat, or involute; 0.5-1 mm wide.
Morphology Reproductive morphology Inflorescences
Inflorescence a panicle. Panicle open; linear; 1-4 cm long; bearing few spikelets. Primary panicle branches appressed. Spikelets solitary. Fertile spikelets pedicelled.
Morphology Reproductive morphology Inflorescences Spikelets
Spikelets comprising 3-6 fertile florets; with diminished florets at the apex. Spikelets oblong; laterally compressed; 3-5 mm long; breaking up at maturity; disarticulating below each fertile floret. Rhachilla internodes smooth.
Fertile
Spikelets comprising 3-6 fertile florets; with diminished florets at the apex. Spikelets oblong; laterally compressed; 3-5 mm long; breaking up at maturity; disarticulating below each fertile floret. Rhachilla internodes smooth.
Morphology Reproductive morphology Inflorescences Bracts Glume
Glumes persistent; similar; shorter than spikelet. Lower glume ovate; 1.5-2 mm long; 1 length of upper glume; membranous; much thinner on margins; without keels; 3 -veined. Lower glume apex acute. Upper glume ovate; 1.5-2 mm long; 0.75-1 length of adjacent fertile lemma; membranous; with hyaline margins; without keels; 3 -veined. Upper glume apex acute.
Morphology Reproductive morphology Flowers Florets
Fertile lemma oblong; 2 mm long; membranous; much thinner above; without keel; 5 -veined. Lemma lateral veins stopping well short of apex. Lemma surface pubescent; hairy below; hairy on veins. Lemma apex erose; truncate, or obtuse. Palea 1 length of lemma; 2 -veined. Palea keels ciliolate. Apical sterile florets resembling fertile though underdeveloped.
Morphology Reproductive morphology Flowers
Anthers 3; 0.5 mm long. Ovary glabrous.
Morphology Reproductive morphology Fruits
Caryopsis with adherent pericarp; obovoid; 0.6 mm long. Hilum punctiform.
Distribution
North America: southwest USA.
Reference
Poeae. Fl Pac NW 1994.
[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