Arecaceae
Chrysalidocarpus

Chrysalidocarpus tanalensis (Jum. & H.Perrier) Eiserhardt & W.J.Baker

First published in Taxon 71: 1185 (2022)
This species is accepted
The native range of this species is SE. Madagascar (S. of Manakara). 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/195962/2436898

Conservation
CR - critically endangered
[IUCN]

General Description
LEAVES with the sheath with sloping shoulders without any sign of auricles, tomentose with peltate scales with white-laciniate edges; petiole 12 cm long (cut lengthwise in the type), densely tomen-tose; rachis in mid-leaf white-tomentose, distally keeled; leaflets regular or grouped?, in mid-leaf the interval 1-2 cm; proximal leaflets c. 115 x 1.2 cm, median 129 x 2.4-2.6 cm, near-distal 63 x 2.4 cm, main vein 1, abaxial midrib with a few basal reddish ramenta to 6 mm, with scattered minute reddish glands on the minor veins, apices bifid, unequally attenuate. INFLORESCENCE branched to 1 order or more?; rachillae 26-33 cm long, 2.5 mm diam. in flower, 4 mm diam. in fruit, with minute bundles of bristles but glabrescent, the triads distant, slightly sunken, with small acute rachilla bracts. STAMINATE FLOWERS with sepals 1.8-2 x 1.6-2.5 mm; petals 3.8-4.4 x 2.1-2.5 mm; 2.6 mm at anthesis, anthers 1.8-2.5 x 0.6-0.8 mm, versatile; pistillode 2-2.8 x 0.4-0.5 mm. PISTILLATE FLOWERS not seen at anthesis, in fruit with sepals 2-2.8 x 3-3.6 mm; petals 3-3.4 x 3.8-4.5 mm; staminodes 0.7-0.8 mm. FRUIT ellipsoid, 9-14 x 5.5-7 mm. SEED 8-13 x 4.5-6 mm; endosperm ruminate, with quite dense ruminations, 1-2 mm deep.
Distribution
Known from a single collection from the Vohipeno area, south of Manakara. It was named for the people living in this area, the Tanala.
Conservation
Possibly extinct. Not seen for over eighty years; HB visited the area, which now seems devoid of tree palms.
Vernacular
Matitanana, Matitana (Tanala, meaning dead hand, supposedly after the dead inflorescences when fallen on the ground).
Biology
Lowland rain forest; 100 m.
[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