Araceae
Arisaema

Arisaema amurense Maxim.

First published in Mém. Acad. Imp. Sci. St.-Pétersbourg Divers Savans 9: 264 (1859)
This species is accepted
The native range of this species is S. Russian Far East to Korea. It is a tuberous geophyte and grows primarily in the temperate biome.

Descriptions

CATE Araceae, 17 Dec 2011. araceae.e-monocot.org

General Description
Tuber depressed globose, 6–7cm in diam. Leaves 2(or 3); petiole (5–)7–30cm, proximal 3/4 sheathing and forming pseudostem; leaf blade 3-foliolate or pedately 5-foliolate; rachis between leaflets 0–6cm; leaflets sometimes covered with fine whitish marks, obovate to narrowly oblong, 7–11 × 4–7cm, base cuneate, margin entire or serrate, occasionally denticulate, apex acute; central leaflet with petiolule 5–25mm; lateral leaflets remote from central one for 1–30mm; outermost leaflets sessile, 9–15cm, oblique, cuneate at base on inner side, auriculate or rounded on outer side. Peduncle shorter than petioles. Spathe greenish to dark purple, usually with pale purplish stripes; tube funnelform to cylindric, ca. 5cm, ca. 2cm in diam. at throat, throat obliquely truncate, not auriculate; limb ovatelanceolate to oblong, 3–4cm, apex acuminate. Spadix unisexual; female zone subconic, ca. 2cm, ca. 1cm in diam. at base; ovary obovoid; ovules 4; stigma spherical; male zone cylindric, ca. 2cm × 2–3mm; synandria lax, nearly sessile; anthers 2 or 3; thecae globose, dehiscing by apical pores. Appendix stipitate, erect, cylindric and robust, 3–5.5cm × 4–5(–7)mm, base truncate, apex obtuse. Berries red, narrowly conic. Seeds 4, red, ovoid, smooth. 2n = 28, 56.
Phenology
Fl. May, mature fr. Sep.
Habitat
Deciduous forests, mixed forests, woods, by streams.
Vernacular
dong bei nan xing
[CATE]

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

  • CATE Araceae

    • Haigh, A., Clark, B., Reynolds, L., Mayo, S.J., Croat, T.B., Lay, L., Boyce, P.C., Mora, M., Bogner, J., Sellaro, M., Wong, S.Y., Kostelac, C., Grayum, M.H., Keating, R.C., Ruckert, G., Naylor, M.F. and Hay, A., CATE Araceae, 17 Dec 2011.
    • 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 2026. 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 2026. 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