Arecaceae
Chrysalidocarpus

Chrysalidocarpus carlsmithii (J.Dransf. & Marcus) Eiserhardt & W.J.Baker

First published in Taxon 71: 1183 (2022)
This species is accepted
The native range of this species is NE. Madagascar. It is a tree and grows primarily in the wet tropical biome.

Descriptions

General Description
Single-stemmed palm. Stems to 6 m tall, ca. 51 cm diam. at breast height, decreasing distally to ca. 40 cm diam. below the crownshaft; internodes ca. 10 cm long. Mature leaf curved and with a slight twist; sheath 140 cm long, ca. 80 cm wide when opened out, adaxially reddish brown, abaxially green to mid-brown with some wax and sparse scattered scales, with triangular lobes at the sheath mouth; petiole 45 cm long, proximally ca. 12 cm wide, distally 9 cm, abaxially waxy, abaxially convex, adaxially deeply grooved and with sharp margins; rachis ca. 3 m long, in mid-leaf 6 cm wide, abaxially with scattered scales, adaxially with a few scales, adaxially keeled, abaxially rounded; leaflets ca. 90 on each side of the rachis, regularly arranged, at intervals of ca. 4 cm, proximal ca. 90 x 3 cm, median ca. 92 x 4 cm, distal ca. 25 x 2 cm, adaxially glabrous or nearly so, abaxially with conspicuous crowded dark brown ramenta, main vein 1, apices attenuate. Inflorescence interfoliar, branched to 3 or 4 orders; peduncle ca. 3.5 m long, proximally 7 cm wide, distally 6 cm wide; prophyll at least 40 cm long, borne at ca. 60 cm above the base of the peduncle, glabrous or nearly so; peduncular bract inserted at 90 cm from the base of the peduncle, not preserved; rachis ca. 1 m long, with ca. 19 first order branches, the proximal of these with a secondary rachis of up to 70 cm long and 25 mm diam. at base, with very numerous rachillae; rachillae 6-8 cm long, 1.5-2 mm diam., glabrous, bearing short triangular bracts to 1 x 1.5 mm. Staminate flower buds 3.2 x 2.2 mm; sepals rounded-triangular, keeled and irregularly gibbous, 1.5 x 1.5 mm; petals 2.8 x 1.8 mm, minutely connate basally; stamens 6 with filaments 1.5 x 0.2 mm, inflexed at tip, anthers elongate, 1.9 x 0.9 mm, the connective ca. 0.2 mm wide, brown; pistillode columnar, 3-grooved, 1.5 x 0.5 mm. Pistillate flowers with sepals 1.5 x 1.5 mm; petals ca. 1 x 1 mm; staminodes at least three, toothlike, ca. 0.1 mm long; ovary ca. 1.2 mm diam. Fruit irregularly ovoid-ellipsoid, 16x9 mm, with stigmatic remains eccentrically apical; epicarp smooth, black; mesocarp thin fleshy; endocarp covered with a loose layer of broad anastomosing fibres. Seed 13x8 mm, endosperm homogeneous; embryo lateral.
Diagnostic
palma robusta compacta inter species arborescentias solitarias, foliolis numerosis regulariter dispositis, inflorescentia interfoliacea ramosissima, rachillis gracilibus brevibusque, endospermio homogeneo differt.
[PW]

IUCN Red List of Threatened Species https://www.iucnredlist.org/species/195918/2432467

Conservation
CR - critically endangered
[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]

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

  • 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