Poaceae
Glyceria

Glyceria striata (Lam.) Hitchc.

First published in Proc. Biol. Soc. Washington 41: 157 (1928)
This species is accepted
The native range of this species is Subarctic America to Guatemala. It is a perennial and grows primarily in the temperate biome.

Descriptions

Extinction risk predictions for the world's flowering plants to support their conservation (2024). Bachman, S.P., Brown, M.J.M., Leão, T.C.C., Lughadha, E.N., Walker, B.E. https://nph.onlinelibrary.wiley.com/doi/full/10.1111/nph.19592

Conservation
Predicted extinction risk: not threatened. Confidence: confident
[AERP]

Morphology General Habit
Perennial; caespitose. Rhizomes absent, or short. Culms erect; 40-90 cm long. Leaf-sheaths tubular for much of their length; with 1 of their length closed; without keel; smooth; glabrous on surface. Ligule an eciliate membrane; 1.5-4 mm long. Leaf-blades flat, or conduplicate; 2-8 mm wide. Leaf-blade surface smooth; glabrous.
Morphology Reproductive morphology Inflorescences
Inflorescence a panicle. Panicle open; ovate; nodding; 12-22 cm long. Primary panicle branches drooping; 6-12 cm long. Panicle branches flexuous; smooth, or scaberulous. Spikelets solitary. Fertile spikelets pedicelled.
Morphology Reproductive morphology Inflorescences Spikelets
Spikelets comprising 3-7 fertile florets; with diminished florets at the apex. Spikelets oblong, or ovate; laterally compressed; 3-4 mm long; breaking up at maturity; disarticulating below each fertile floret.
Fertile
Spikelets comprising 3-7 fertile florets; with diminished florets at the apex. Spikelets oblong, or ovate; laterally compressed; 3-4 mm long; breaking up at maturity; disarticulating below each fertile floret.
Morphology Reproductive morphology Inflorescences Bracts Glume
Glumes persistent; similar; shorter than spikelet. Lower glume ovate; 0.4-0.9 mm long; 0.9 length of upper glume; membranous; much thinner on margins; without keels; 1 -veined. Lower glume lateral veins absent. Lower glume surface puberulous; hairy at apex. Lower glume apex obtuse. Upper glume ovate; 0.5-1 mm long; 0.33-0.5 length of adjacent fertile lemma; membranous; with hyaline margins; without keels; 1 -veined. Upper glume surface puberulous; hairy at apex. Upper glume apex obtuse.
Morphology Reproductive morphology Flowers Florets
Fertile lemma obovate; 1.5-2 mm long; membranous; without keel; 7 -veined. Lemma lateral veins prominent. Lemma apex erose; obtuse. Palea bowed outwards; 1 length of lemma; 2 -veined. Apical sterile florets resembling fertile though underdeveloped.
Morphology Reproductive morphology Flowers
Lodicules 2; united; oblong; fleshy; truncate. Anthers 2; 0.3-0.5 mm long.
Morphology Reproductive morphology Fruits
Caryopsis with adherent pericarp. Hilum linear.
Distribution
Europe: central, southwestern, and eastern. Australasia: New Zealand. North America: Subarctic, western Canada, eastern Canada, northwest USA, north-central USA, northeast USA, southwest USA, south-central USA, southeast USA, and Mexico. South America: Mesoamericana.
Reference
Meliceae. Gr Texas 1994.
[GB]

Sources

  • Angiosperm Extinction Risk Predictions v1

    • Angiosperm Threat Predictions
    • http://creativecommons.org/licenses/by/4.0

  • GrassBase - The Online World Grass Flora

    • Clayton, W.D., Vorontsova, M.S., Harman, K.T. and Williamson, H. (2006 onwards). 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 2024. Published on the Internet at http://www.ipni.org and https://powo.science.kew.org/
    • © Copyright 2023 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 2024. Published on the Internet at http://www.ipni.org and https://powo.science.kew.org/
    • © Copyright 2023 International Plant Names Index and World Checklist of Vascular Plants. http://creativecommons.org/licenses/by/3.0