Ravenea louvelii Beentje

This species is accepted, and its native range is E. Central Madagascar (Andasibe Reg.).

[PW]
Conservation
Endangered. Only known from a single site, where it grows outside the protected area. Population numbers are low; we have counted fewer than 25 trees with trunks, and rejuvenation seems minimal.
Vernacular
Lakamarefo, Siraboto.
Biology
Moist forest, steep slope near crest; 800- 1000 m.
Distribution
E Madagascar, only known from Andasibe. Ravenea louvelii, showing litter-trapping habit and persistent leaf bases (Dransfield et al. JD6485). ;
General Description
Short stocky palm of the forest undergrowth. TRUNK 1.5-3 m, 15-20 cm diam. without leaf sheaths, c. 50 cm with the sheath bases; distal 1.5 m of trunk with sheath remnants, proximal part only with sheath bases; wood hard; internodes c. 3 cm. LEAVES 9-14 in crown, robust, porrect, stiff, with up to 15 marcescent leaves present; sheath 46-60 x 6.5-8 cm, channelled adaxially, rounded abaxially, swollen at base, with dense soft pale brown tomentum, turning fibrous with age, with long stiff brown mar ginal fibres; petiole 50-130 cm long, proximally 3-5.5 x 2-3.5 cm across, distally 2-3 x 1.2-1.9 cm across, especially abaxially covered in rich brown scales, with very sharp margins, adaxially channelled with the central part flat or with central ridge, abaxially rounded; rachis 2.2-3 m long, in mid-leaf c. 19 x 11 mm across, adaxially keeled with up to 9 mm wide flat keel top and abaxially flat, with sharp upper edges, especially abaxially covered in brown scales, continuing past the distal pair of leaflets for 10-21.5 cm; leaflets in one plane, slightly pendulous in distal part of leaflet, dark green, attenuate, 80-104 on each side of the rachis, the proximal ones 28-42 x 0.3-1 cm, median 47-67 x 1.4-2.6 cm (interval 1.5-2.5 cm), distal 10-40 x 0.4-1.8 cm, with some ramenta near the very base of the leaflet, or in young leaves with lines of red-brown scales; rachis bracts 4 x 1 mm; pedicels 0.5-2 mm, 2.5-4 mm across; bracteoles 1.5-4 x 1-2 mm, connate with the pedicel for 0.5-1 mm. PISTILLATE FLOWERS slightly musty-scented, cream-coloured; calyx connate for 0.6-1 mm, 2.8-5 mm across, the free lobes 0.8-2 x 2.6-3 mm; petals 6.5-9.5 x 1.7-2.2 mm, fleshy, 1.5 mm thick, connate by 1 mm through the fleshy base of the antesepalous filaments; staminodes 6, 2.8-3.2 x 1.6-1.7 mm; ovary ovoid, 3-3.8 x 3 mm. FRUIT dark purple (protologue says yellowish at maturity), somewhat depressed globose, 13-14 x 15-20 mm (25 mm according to Beccari), 1-2seeded; stigmatic remains subapical or terminal. SEED ovoid, sometimes flat on 1 face, 9-13 x 6-9 mm; seed coat black, 0.2 mm thick. GERMINATION remote, eophyll pinnate.

[PW]
Use
Not recorded.

Native to:

Madagascar

Ravenea louvelii Beentje appears in other Kew resources:

Date Reference Identified As Barcode Type Status Has image?
Jan 1, 1995 Beentje, H. [4769], Madagascar K000114658 No
Jan 1, 1995 Beentje, H.J. [4745], Madagascar K000114659 No
Jan 1, 1995 Dransfield, J. [JD6418], Madagascar K000114660 No
Jan 1, 1995 Dransfield, J. [JD6420], Madagascar K000114661 No
Jan 1, 1995 Dransfield, J. [JD6486], Madagascar K000114663 No
Jan 1, 1995 Dransfield, J. [JD6419], Madagascar K000114664 No
Jan 1, 1995 Beentje, H.J. [4536], Madagascar K000114665 No
Jan 1, 1993 Dransfield, J. [JD6485], Madagascar K000114662 No
Dransfield, J. [JD6485], Madagascar 29047.677 No
Dransfield, J. [JD6486], Madagascar 29047.678 No
Beentje, H.J. [4536], Madagascar 29047.835 No
Dransfield, J. [JD6419], Madagascar 51603.000 No
Dransfield, J. [JD6486], Madagascar 54339.000 No
Dransfield, J. [JD6485], Madagascar 54426.000 No
Dransfield, J. [JD6485], Madagascar 55850.000 No
Dransfield, J. [JD6485], Madagascar 55851.000 No
Dransfield, J. [JD6419], Madagascar 59457.000 No
Dransfield, J. [JD6486], Madagascar 59463.000 No
Dransfield, J. [JD6485], Madagascar 59469.000 No
Beentje, H.J. [4536], Madagascar 60442.000 No
Beentje, H.J. [4536], Madagascar 60480.000 No
Cultivated [1988-2369] K000521720 No

First published in Kew Bull. 49: 664 (1994)

Accepted by

  • Govaerts, R. & Dransfield, J. (2005). World Checklist of Palms: 1-223. The Board of Trustees of the Royal Botanic Gardens, Kew.

Literature

Palmweb - Palms of the World Online

  • J. Dransfield & H. Beentje, The Palms of Madagascar. 1995

  • Herbarium Catalogue Specimens

  • Kew Backbone Distributions

    The International Plant Names Index and World Checklist of Selected Plant Families 2022. Published on the Internet at http://www.ipni.org and http://apps.kew.org/wcsp/
    © Copyright 2017 World Checklist of Selected Plant Families. http://creativecommons.org/licenses/by/3.0

  • Kew Names and Taxonomic Backbone

    The International Plant Names Index and World Checklist of Selected Plant Families 2022. Published on the Internet at http://www.ipni.org and http://apps.kew.org/wcsp/
    © Copyright 2017 International Plant Names Index and World Checklist of Selected Plant Families. 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