Poaceae
Sasa

Sasa shimidzuana Makino

First published in J. Jap. Bot. 2: 15 (1920)
This species is accepted
The native range of this species is Central & S. Japan. It is a bamboo 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. Rhizomes elongated; leptomorph. Culms erect; 100-200 cm long; 5-7 mm diam.; woody. Culm-internodes terete; thin-walled; distally glabrous, or pubescent. Culm-nodes glabrous, or pubescent. Lateral branches ample; arising from upper culm. Bud complement 1. Branch complement one; solitary; as thick as stem. Culm-sheaths persistent; glabrous; without auricles. Leaves 5-9 per branch. Leaf-sheaths glabrous on surface. Leaf-sheath oral hairs lacking, or ciliate. Ligule an eciliate membrane. Leaf-blade base with a brief petiole-like connection to sheath. Leaf-blades oblong; 23-28 cm long; 40-50 mm wide. Leaf-blade surface pubescent; densely hairy; hairy abaxially. Leaf-blade apex acuminate.
Morphology Reproductive morphology Inflorescences
Inflorescence a panicle. Panicle open; ovate; 7-12 cm long. Spikelets solitary. Fertile spikelets pedicelled.
Morphology Reproductive morphology Inflorescences Spikelets
Spikelets comprising 6-8 fertile florets; with diminished florets at the apex. Spikelets linear; laterally compressed; 20-30 mm long; breaking up at maturity; disarticulating below each fertile floret.
Fertile
Spikelets comprising 6-8 fertile florets; with diminished florets at the apex. Spikelets linear; laterally compressed; 20-30 mm long; breaking up at maturity; disarticulating below each fertile floret.
Morphology Reproductive morphology Inflorescences Bracts Glume
Glumes persistent; similar; shorter than spikelet; thinner than fertile lemma. Lower glume lanceolate; 1 mm long; scarious; without keels. Lower glume apex acuminate. Upper glume lanceolate; 3 mm long; scarious; without keels. Upper glume apex acuminate.
Morphology Reproductive morphology Flowers Florets
Fertile lemma ovate; 7 mm long; chartaceous; without keel. Lemma apex acuminate. Apical sterile florets resembling fertile though underdeveloped.
Morphology Reproductive morphology Flowers
Lodicules 3. Anthers 6. Stigmas 3.
Morphology Reproductive morphology Fruits
Caryopsis with adherent pericarp; apex unappendaged.
Distribution
Asia-temperate: eastern Asia.
Reference
Bambuseae. Ind. Jap. Bam. 2001.
[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 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

  • World Checklist of Vascular plants (WCVP)

    • 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