Zizania latifolia (Griseb.) Hance ex F.Muell.

First published in Proc. Acclim. Soc. Victoria 1: 419 (1872)
This species is accepted
The native range of this species is Assam to SE. Siberia and Temp. E. Asia. It is a perennial or rhizomatous geophyte and grows primarily in the temperate biome.

Descriptions

Morphology General Habit
Perennial. Stolons present. Culms 100-150 cm long; spongy. Ligule an eciliate membrane; 12-20 mm long. Leaf-blades 30-100 cm long; 20-30 mm wide; coriaceous. Leaf-blade surface scaberulous; rough on both sides. Leaf-blade margins cartilaginous; scabrous. Leaf-blade apex attenuate.
Morphology Reproductive morphology Inflorescences
Monoecious; with male and female spikelets in the same inflorescence. Inflorescence a panicle. Panicle open; lanceolate; 35-50 cm long. Sexes segregated; on unisexual branches; with male below. Spikelets appressed; solitary. Fertile spikelets pedicelled. Male spikelets pedicelled (pendulous). Pedicels 3 mm long; pubescent; tip cupuliform.
Fertile
Spikelets comprising 1 fertile florets; without rhachilla extension. Spikelets oblong; laterally compressed; 15-17 mm long; falling entire.
Morphology Reproductive morphology Inflorescences Bracts Glume
Glumes both absent or obscure.
Morphology Reproductive morphology Flowers Florets
Fertile florets female. Fertile lemma oblong; 15-17 mm long; chartaceous; without keel; 3 -veined. Lemma apex acute; awned; 1 -awned. Principal lemma awn 15-50 mm long overall. Palea 1 length of lemma; 2 -veined; without keels.
Morphology Reproductive morphology Flowers
Lodicules 2. Anthers 6; 5-8 mm long.
Morphology Reproductive morphology Fruits
Caryopsis with adherent pericarp; linear; 10-20 mm long.
Morphology Reproductive morphology Inflorescences Spikelets
Male spikelets distinct from female; 8-12 mm long. Male spikelet glumes absent. Male spikelet lemma 5 -veined; awned (8-10mm). Spikelets comprising 1 fertile florets; without rhachilla extension. Spikelets oblong; laterally compressed; 15-17 mm long; falling entire.
sex Male
Male spikelets distinct from female; 8-12 mm long. Male spikelet glumes absent. Male spikelet lemma 5 -veined; awned (8-10mm).
Distribution
Europe: eastern. Asia-temperate: Siberia, Soviet far east, China, and eastern Asia. Asia-tropical: India, Indo-China, and Malesia. Australasia: New Zealand. Pacific: north-central.
Reference
Oryzeae. Bor.
[GB]

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]

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

    • 'The Herbarium Catalogue, Royal Botanic Gardens, Kew. Published on the Internet http://www.kew.org/herbcat [accessed on Day Month Year]'. Please enter the date on which you consulted the system.
    • 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
  • Kew Science Photographs

    • Copyright applied to individual images