Arecaceae
Chrysalidocarpus

Chrysalidocarpus ifanadianae (Beentje) Eiserhardt & W.J.Baker

First published in Taxon 71: 1184 (2022)
This species is accepted
The native range of this species is CE. Madagascar. It is a 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: threatened. Confidence: confident
[AERP]

IUCN Red List of Threatened Species https://www.iucnredlist.org/species/38538/2874169

Conservation
CR - critically endangered
[IUCN]

Vernacular
Not recorded.
Distribution
Only known from the Ifanadiana area.
Biology
Lowland rain forest; steep mid slopes; 200-450 m.
General Description
Slender solitary palm. TRUNK 15-24 m tall, conspicuously stepped and ringed, 18 cm diam.; internodes 12 cm long, orange-brown with white nodal scars 1.5 cm broad, with age the whole trunk becoming pale grey to almost white; upper internodes green with white scars. LEAVES 7 in the crown, spirally inserted, porrect with leaflets in one plane but curving downwards; sheath 72 cm long, at the base 20 cm wide (when flattened), green, 50-75% open, with minute scattered scales, with brown triangular ligules 5 x 2.3 cm; petiole 30 cm long, proximally 6 x 4 cm, distally 4 x 3 cm, channelled with sharp edges, waxy and with minute scattered scales; rachis c. 3 m long, proximally channelled, in mid-leaf 1.4-2.5 cm diam., sharply keeled, waxy and ? with minute scattered scales; leaflets regular, c. 55 on each side of the rachis, the proximal 90-108 x 1-3 cm, median 104-110 x 4.3-5 cm (interval 4 cm), distal 15-37 x 0.4-2.2 cm, glaucous and glabrous, with attenuate apices, main veins 5, prominent. INFLORESCENCE infrafoliar, with curved peduncle, branched to 3 orders; peduncle 57 cm long, proximally 4 x 2 cm, distally 3 x 2 cm diam.; prophyll c. 89 cm, borne at c. 5 cm above the base of the peduncle, 10 cm wide, 2-winged; peduncular bract inserted at 26 cm from the base of the peduncle, 65 cm long, the distal 18 cm closed, beaked for 4 cm; rachis 60 cm long, with c. 21 branched and c. 16 unbranched first order branches, these proximally 2.8 x 1.6 cm; rachillae 12-33 cm long, 3-4 mm diam., with distant triads in slight pits, with triangular, entire bracts. STAMINATE FLOWERS unknown. PISTILLATE FLOWERS with imbricate sepals 2.5-3 x 2.5-3.5 mm, orbicular, rounded, slightly spurred at the base; petals 4-4.5 x 3-5 mm, hooded, orbicular with minute acute apex; staminodes 0.8-1.3 mm, flat and narrow; ovary c. 3.5 x 4.5 mm, asymmetrical, the stigmas slightly lateral and 1.3 mm high. FRUIT 8 x 7-10 mm; endocarp with anastomosing fibres. SEED transversely ellipsoid, broader in one plane than in the other, 6.5 x 5.5 x 8-9 mm, with homogeneous endosperm. EOPHYLL bifid.
Diagnostic
Palma insignis habitu D. lastellianae superficialiter similis sed vagina folii viride non brunneo-tomentosa, D. nauseosae affinis sed fructu parvo endospermio homogeneo differt
Conservation
Critical. Restricted to a small area, where clearing of forest is continuing apace; less than fifty trees known.
[PW]

Uses

Use
Not recorded.
[PW]

Sources

  • Angiosperm Extinction Risk Predictions v1

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

  • 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