Arecaceae
Chrysalidocarpus

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

First published in Taxon 71: 1183 (2022)
This species is accepted
The native range of this species is NW. Madagascar. It is a tree and grows primarily in the seasonally dry 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/38516/2870138

Conservation
CR - critically endangered
[IUCN]

Biology
Rain forest; c. 500 m.
Conservation
?Extinct. Not collected for over 80 years.
General Description
Clustering palm. Stems 4-5 m tall, 5-6 cm diam.; internodes distally 2.5-3.5 cm long, nodal scars c. 0.2 cm, distal diameter of stems c. 2.3 cm. LEAVES pinnate; sheath c. 32 cm, proximally glabrous and waxy, distally with scattered scales, with rounded opening, auricles absent; petiole 13-27 cm long, proximally (in a young leaf) 8 x 7 mm, distally 4 x 6 mm, channelled adaxially; rachis slender, in a young leaf 1 m long, in mid-leaf 3-5 mm wide, slightly keeled, almost glabrous; leaflets c. 47 on each side of the rachis, in groups of 2-6, the group interval 4-5 cm, rather stiff, linear, in a young leaf the proximal 38-40 x 0.3-0.5 cm, median 34-36 x 0.6-0.8 cm, distal 8-23 x 0.3-0.6 cm, main vein 1, ramenta few, 1-3 mm long, or absent, rest of leaf glabrous, apices unequally bifid, attenuate. INFLORESCENCE branched to 2 orders; peduncle c. 42.5 cm long, distally curved, proximally c. 8 x 3 mm diam., distally c. 7 x 4 mm diam.; prophyll c. 52 cm long, 3 cm wide, borne at c. 23 cm above the base of the peduncle, waxy, glabrous, open in its upper 20 cm; peduncular bract inserted at c. 35 cm from the base of the peduncle, 29-40 cm long, opening over its length except for the beak of 5 mm; rachis c. 18 cm long, glabrous with c. 8 branched and 13 unbranched first order branches, the proximal of these with a secondary rachis up to 2.5 cm long and proximally 4 x 2 mm diam., with up to 4 rachillae; rachillae 4-11 cm long, c. 1.5 mm diam., glabrous, sinuous, with distant superficial triads; rachilla bracts c. 1 mm, acute. STAMINATE FLOWERS unknown. PISTILLATE FLOWERS with sepals 1.8-2.2 x 2.8-3 mm; petals 3-3.3 x 3.3-3.6 mm; staminodes 0.6-0.7 mm; ovary 2.5-3.3 x 1.8-2 mm. FRUIT ellipsoid or slightly obovoid, 11-14 x 8-11 mm, the apex rounded; endocarp very fibrous, with interwoven fibres. SEED ellipsoid, 11.5-12.5 x 9.5-10 mm, pointed at the base with a sub-basal depression, rounded at the apex; endosperm ruminate, the ruminations distant and c. 1 mm deep.
Distribution
Only known from the type, from the upper Sambirano River.
Vernacular
Not recorded.
[PW]

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

  • 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