Pseudosasa japonica (Siebold & Zucc. ex Steud.) Makino ex Nakai

First published in J. Arnold Arbor. 6: 150 (1925)
This species is accepted
The native range of this species is S. Korea, Central & S. Japan. It is a bamboo and grows primarily in the temperate biome.

Descriptions

Morphology General Habit
Perennial. Rhizomes elongated; leptomorph. Culms erect; 300-500 cm long; 10-20 mm diam.; woody. Culm-internodes terete; thin-walled; 15-30 cm long. Lateral branches dendroid. Bud complement 1. Branch complement one; solitary; as thick as stem. Culm-sheaths persistent; pilose; without auricles; glabrous on shoulders. Culm-sheath blade linear, or lanceolate. Leaves cauline; 4-7 per branch. Leaf-sheaths glabrous on surface. Leaf-sheath oral hairs lacking. Ligule an eciliate membrane. Leaf-blade base with a brief petiole-like connection to sheath. Leaf-blades lanceolate; 8-35 cm long; 10-45 mm wide. Leaf-blade venation with distinct cross veins. Leaf-blade apex acuminate.
Morphology Reproductive morphology Inflorescences
Inflorescence a panicle. Panicle open; obovate; 10-20 cm long. Spikelets solitary. Fertile spikelets pedicelled.
Morphology Reproductive morphology Inflorescences Spikelets
Spikelets comprising 2-12 fertile florets; with diminished florets at the apex. Spikelets linear; laterally compressed; 15-45 mm long; 3-4 mm wide; breaking up at maturity; disarticulating below each fertile floret.
Fertile
Spikelets comprising 2-12 fertile florets; with diminished florets at the apex. Spikelets linear; laterally compressed; 15-45 mm long; 3-4 mm wide; breaking up at maturity; disarticulating below each fertile floret.
Morphology Reproductive morphology Inflorescences Bracts Glume
Glumes persistent; similar; shorter than spikelet. Lower glume lanceolate; 4-9 mm long; 0.5-0.8 length of upper glume; chartaceous; without keels; 5 -veined. Lower glume apex acute. Upper glume lanceolate; 8-12 mm long; 1 length of adjacent fertile lemma; chartaceous; without keels; 7-9 -veined. Upper glume apex acute.
Morphology Reproductive morphology Flowers Florets
Fertile lemma ovate; 8-13 mm long; chartaceous; without keel; 17-23 -veined. Lemma apex acuminate; muticous, or mucronate, or awned; 1 -awned. Principal lemma awn 0-2 mm long overall. Palea 0.9 length of lemma; 8-10 -veined. Palea keels ciliate. Apical sterile florets resembling fertile though underdeveloped.
Morphology Reproductive morphology Flowers
Lodicules 3; ovate; 3-4 mm long; ciliate. Anthers 3-4; 6 mm long. Stigmas 3. Ovary glabrous.
Morphology Reproductive morphology Fruits
Caryopsis with adherent pericarp; ovoid; 11 mm long.
Distribution
Europe: northern and southwestern. Africa: Macaronesia. Asia-temperate: Caucasus, western Asia, China, and eastern Asia. Asia-tropical: Indo-China. Australasia: New Zealand.
Reference
Bambuseae. Lin.
[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]

Common Names

English
Bamboo

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 Living Collection Database

    • Common Names from Plants and People Africa http://www.plantsandpeopleafrica.com/
  • 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