Arecaceae
Chrysalidocarpus

Chrysalidocarpus leptocheilos (Hodel) Eiserhardt & W.J.Baker

First published in Taxon 71: 1184 (2022)
This species is accepted
The native range of this species is N. & NW. Madagascar. It is a tree and grows primarily in the wet tropical biome.

Descriptions

General Description
Solitary palm. TRUNK to 10 m, 25 cm diam., slightly flared at the base; internodes 12 cm, nodal scars 2 cm, white. LEAVES c. 15 in the crown, porrect; sheath partially open in outer leaves, c. 62 cm long, 5 mm thick, covered in dense rusty brown tomentum, with auricles 3.5 cm high; petiole 17 cm long, 7-9 cm wide, channelled adaxially, densely tomentose but glabrescent; rachis to 4 m long, proximally channelled and tomentose, more distally becoming flattened and eventually keeled distally, glabrous distally; leaflets up to 103 on each side of the rachis, regular, slightly drooping, green, linear, straight, acuminate, the proximal 55 x 0.5-0.8 cm, median 85 x 4 cm, distal 55 x 0.5-0.8 cm, glabrous but for some ramenta on the proximal part of the midrib abaxially, main veins 3. INFLORESCENCE interfoliar becoming infrafoliar in fruit, branched to 3 orders, to 1.7 x 1.4 m; peduncle to 65 cm long, 11 cm diam. proximally, 3-6 cm diam. distally, flattened, reddish tomentose over green; prophyll ± woody, c. 43 cm, borne at 12 cm above the base of the peduncle, c. 12 cm wide, tomentose; peduncular bract deciduous, woody, inserted at 26 cm from the base of the peduncle, to 70 x 10-15 cm, reddish tomentose; two smaller peduncular bracts present near the apex of the peduncle, to 17 cm long, tomen-tose; rachis 100 cm, flattened, grey-tomentellous, with 24 first order branches; rachis bracts to 3 cm long; rachillae spreading, to 30 cm long, 3 mm diam., green; with distant triads in pits; rachilla bract 0.5-0.75 mm high. STAMINATE FLOWERS with sepals 2-2.5 mm, keeled, truncate; petals on a 1 mm high receptacle, 2 x 1.5-1.75 mm, ovate, acute; stamens said to be connate for 1.75 mm, filaments 0.8-1 mm long, anthers 1 mm long, dorsifixed?; pistillode 1.75-2 mm, columnar. PISTILLATE FLOWERS with sepals 2 mm; petals 3 x 3 mm; gynoecium 4 mm high, 2-2.5 mm diam., with 1 mm long stigma lobes. FRUIT globose, dark brown, 10-12 mm; endocarp fibrous, the fibres anastomosing rather intensely. SEED 8.5-10 x 8.5-9 mm, globose, pointed at the base, rounded at the apex, with a subbasal depression corresponding to the embryo; ruminations of the endosperm irregular, to 3.5 mm deep and up to half the diameter of the seed wide. EOPHYLL pinnate.
Conservation
Unknown, until the status in the wild has become more clear.
Distribution
Said to occur in W Madagascar, but no voucher specimens from the wild are known.
Vernacular
Not recorded.
Biology
Said to be at low elevations along and in rocky, sandy, seasonally dry streambeds (no vouchers).
[PW]

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]

IUCN Red List of Threatened Species https://www.iucnredlist.org/species/195892/2429948

Conservation
CR - critically endangered
[IUCN]

Uses

Use
Not recorded.
[PW]

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.
    • Digital Image © Board of Trustees, RBG Kew http://creativecommons.org/licenses/by/3.0/

  • 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 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 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

  • Kew Science Photographs

    • Copyright applied to individual images

  • Palmweb - Palms of the World Online

    • Palmweb 2011. Palmweb: Palms of the World Online. Published on the internet http://www.palmweb.org. Accessed on 21/04/2013
    • Content licensed under Creative Commons Attribution-NonCommercial-ShareAlike 3.0 Unported License http://creativecommons.org/licenses/by-nc-sa/3.0