Sasa cernua Makino

First published in J. Jap. Bot. 6: 12 (1929)
This species is accepted
The native range of this species is Sakhalin to N. & Central Japan. It is a bamboo and grows primarily in the temperate biome.

Descriptions

Morphology General Habit
Perennial. Rhizomes elongated; leptomorph. Culms erect; 200-300 cm long; woody. Culm-internodes terete; thin-walled; distally glabrous, or pilose; with reflexed hairs. Lateral branches dendroid. Bud complement 1. Branch complement one; solitary; as thick as stem. Culm-sheaths persistent; glabrous; without auricles. Leaf-sheaths glabrous on surface. Ligule an eciliate membrane. Leaf-blade base with a brief petiole-like connection to sheath. Leaf-blades oblong; 20-28 cm long; 50-70 mm wide; mid-green and glaucous; discolorous with last colour beneath. Leaf-blade midrib scarcely raised beneath. Leaf-blade surface glabrous, or pubescent; sparsely hairy; hairy abaxially. Leaf-blade apex acuminate.
Morphology Reproductive morphology Inflorescences
Inflorescence a panicle. Panicle open; ovate; 5 cm long. Spikelets solitary. Fertile spikelets pedicelled.
Morphology Reproductive morphology Inflorescences Spikelets
Spikelets comprising 5-7 fertile florets; with diminished florets at the apex. Spikelets lanceolate; laterally compressed; 20-30 mm long; breaking up at maturity; disarticulating below each fertile floret. Rhachilla internodes 3-4 mm long; pubescent.
Fertile
Spikelets comprising 5-7 fertile florets; with diminished florets at the apex. Spikelets lanceolate; laterally compressed; 20-30 mm long; breaking up at maturity; disarticulating below each fertile floret. Rhachilla internodes 3-4 mm long; pubescent.
Morphology Reproductive morphology Inflorescences Bracts Glume
Glumes persistent; similar; shorter than spikelet; thinner than fertile lemma. Lower glume lanceolate; 1-1.5 mm long; scarious; without keels. Lower glume apex acuminate. Upper glume lanceolate; 1-1.5 mm long; scarious; without keels. Upper glume apex acuminate.
Morphology Reproductive morphology Flowers Florets
Fertile lemma ovate; 12 mm long; chartaceous; without keel; 9 -veined. Lemma surface scabrous. Lemma apex acuminate. Palea 10 mm long; 8 -veined. Palea keels ciliolate; adorned above. Palea surface scabrous. Palea apex awned; awns hairy. Apical sterile florets resembling fertile though underdeveloped.
Morphology Reproductive morphology Flowers
Lodicules 3; ovate; ciliate; acute. Anthers 6; 4-5 mm long. Stigmas 3.
Morphology Reproductive morphology Fruits
Caryopsis with adherent pericarp; apex unappendaged.
Distribution
Asia-temperate: Soviet far east and eastern Asia.
Reference
Bambuseae. Ind. Jap. Bam. 2001.
[GB]

IUCN Red List of Threatened Species https://www.iucnredlist.org/species/44392829/44544895

Conservation
LC - least concern
[IUCN]

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

    • Digital Image © Board of Trustees, RBG Kew http://creativecommons.org/licenses/by/3.0/
  • IUCN Categories

    • IUCN Red List of Threatened Species
    • http://creativecommons.org/licenses/by-nc-sa/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