Arecaceae
Hydriastele

Hydriastele lanata W.J.Baker & Petoe

First published in Phytotaxa 370: 62 (2018)
This species is accepted
The native range of this species is Central New Guinea. It is a tree and grows primarily in the wet tropical biome.

Descriptions

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
Moderately robust, single-stemmed palm to 10 m, bearing 10–12 leaves in crown
Morphology Stem
Stem ca. 10 cm diam. Leaf ca. 2.4 m long including petiole, arching; sheath ca. 120 cm long, covered with a thick and dense layer of woolly and very fluffy indumentum, crownshaft ca. 216 × 10 cm; petiole ca. 32 cm long, upper surface channelled; leaflets ca. 43 each side of rachis, regularly arranged, ascending and drooping at their tips, linear; apical leaflets comprising ca. 4 folds, truncately jagged at the tip
Morphology Reproductive morphology Inflorescences
Inflorescence 65–70 cm long including 11–12 cm peduncle, branched to 2 orders, protandrous; rachillae 17–23; triads decussately arranged
Morphology Reproductive morphology Flowers
Male flower with 7–10 stamens, white Female flower with free sepals and free petals with conspicuous, triangular tips, white
Morphology Reproductive morphology Fruits
Fruit not seen
Morphology Reproductive morphology Seeds
Seed not seen.
Distribution
Known only from a site adjacent to the Ok Tedi Copper Mine, central New Guinea.
Ecology
Montane and somewhat degraded rainforest on steep slopes at ca. 1,400 m.
Vernacular
None recorded.
Conservation
Data Deficient (IUCN 2019). Due to insufficient evidence, an extinction risk category cannot be selected. However, expansion of the mining site adjacent to the only known site for this species is likely to pose a significant threat.
Note
Hydriastele lanata is a moderately robust tree palm with arching leaves, immediately recognisable on account of the pale brown, woolly and very fluffy indumentum on the leaf sheath, which is unique in Hydriastele.
[PONG]

IUCN Red List of Threatened Species https://www.iucnredlist.org/species/151357051/151358615

Conservation
DD - data deficient
[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: threatened. Confidence: confident
[AERP]

Uses

Use
None recorded.
[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