Arecaceae
Hydriastele

Hydriastele kasesa (Lauterb.) Burret

First published in Notizbl. Bot. Gart. Berlin-Dahlem 13: 484 (1937)
This species is accepted
The native range of this species is Bismarck Archipelago. It is a shrub or tree and grows primarily in the wet tropical 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: low confidence
[AERP]

IUCN Red List of Threatened Species https://www.iucnredlist.org/species/151357028/151358610

Conservation
LC - least concern
[IUCN]

Baker, W.J., Barfod, A.S., Cámara-Leret, R., Dowe, J.L., Heatubun, C.D., Petoe, P., Turner, J.H., Zona, S. & Dransfield, J. (2024) Palms of New Guinea. Royal Botanic Gardens, Kew, Richmond. 726 pp.

Morphology General Habit
Slender, single- or multi-stemmed palm to 6 m, bearing 6–8 leaves per crown
Morphology Stem
Stem 1.5–3.8 cm diam. Leaf 70–150 cm long including petiole; sheath 15–30 cm long; petiole 15–40 cm; leaflets 6–13 each side of rachis, irregularly arranged with a group of closely spaced leaflets in different planes in the middle of the leaf, wedge-shaped, truncately jagged at their tips
Morphology Reproductive morphology Inflorescences
Inflorescence 17–30 cm long including 2–4 cm peduncle, branched to 1 or 2 orders, protogynous; triads decussately arranged
Morphology Reproductive morphology Flowers
Female flower with free sepals and free, rounded, low petals Male flower with 6 stamens
Morphology Reproductive morphology Fruits
Fruit ca. 12 × 9 mm when ripe, ovoid to subglobose, red
Morphology Reproductive morphology Seeds
Seed ca. 6.7 × 5.4 mm (when dry), ovoid; endosperm ruminate.
Distribution
New Britain and New Ireland in the Bismarck Archipelago.
Ecology
Rainforest, at sea level to 800 m.
Vernacular
None recorded. Stem used for flooring.
Conservation
Least Concern (IUCN 2019). However, close monitoring is required due to heavy logging of the forests within the distribution of this island species.
Note
Hydriastele kasesa is a slender understorey palm distinguished by its leaves with 6–13 irregularly arranged leaflets on each side of the rachis and leaf sheaths up to 30 cm long. Hydriastele kasesa is most similar to H. wendlandiana but that species is usually taller and less slender and has leaves with 12–40 leaflets per side and leaf sheaths longer than 40 cm.
[PONG]

Sources

  • Angiosperm Extinction Risk Predictions v1

    • Angiosperm Threat Predictions
    • http://creativecommons.org/licenses/by/4.0

  • 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.

  • 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 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

  • Palms of New Guinea

    • http://creativecommons.org/licenses/by-nc-sa/3.0