Ravenea julietiae Beentje

This species is accepted, and its native range is E. Madagascar.

[PW]
Biology
Moist lowland forest; on slight to steep mid slopes; 50-285 m.
General Description
Graceful medium-sized palm. TRUNK 3-10 m, 10-15 cm diam., diameter near crown c. 7 cm; basal boss to 15 cm high, 40 cm across; internodes 6-12 cm (near crown 2 cm), nodal scars c. 1 cm, bark brown-grey; wood very hard, with black fibres just below the bark; base of crown bulbous, c. 15 cm across. LEAVES 9-23 in the crown, gracefully arching; sheath 40-80 x 12-16 cm, pale green, the base abaxially with white to pale brown tomentum; petiole 30-80 cm long, proximally 3.5-6 x 2.2-4 cm across, distally 2.5-4 x 1.4-3.5 cm, deeply channelled with sharp edges, glabrescent or with a few scattered scales; rachis 1.1-2.8 m, channelled or flat for some 40 cm, keeled for the rest, green with white scattered scales, in mid-leaf 1.7-2 cm wide; leaflets stiff or with the distal part of the leaflet pendulous, the leaflets on opposite sides of the rachis at an angle of c. 90° to each other, 34-48 on each side of the rachis, the proximal 58-110 x 1.3-3.7 cm, median 47-90 x 3.3-5.2 cm (interval 4 cm), distal 10-26 x 1.2-2.3 cm, ramenta apparently none, but in young leaves sparse large ramenta over entire length of midrib. STAMINATE INFLORESCENCE interfoliar, only known dead, multiple in 5s-7s, the individual inflorescences up to 90 cm, branched to 2 orders; peduncle 38-47 cm, distally c. 5 x 3 mm across; prophyll not seen; peduncular bracts unknown, except for one found on the ground, 84 cm long; rachis 46-55 cm, distally zigzag, with about 26 branched and 5 unbranched branches; rachillae 3.5-17 cm, distally sinuous. PISTILLATE INFLORESCENCE interfoliar, solitary, erect, spreading in fruit, 250-400 cm, branched to 1 order; peduncle 145-305 cm, proximally 2-2.2 x 1.3-1.8 cm across, distally 1.5 x 1 cm across, green with silvery-brown indument; prophyll 15-20 x 5 cm; peduncular bracts 22-36 cm (inserted at 2-6 cm from the base of the peduncle), 37-114 cm (inserted at c. 13 cm), 185-225 cm (inserted at c. 19 cm), 240-280 cm (inserted at 25-115 cm); rachis 28-70 cm long; rachillae 29-34 in number, 20 (distally) -49 (proximally) cm, 2.5-4 mm across in fruit; pedicels 1-8 mm; flowers unknown. FRUIT colour unknown, ellipsoid, 22-27 x 17-20 mm and with lateral beak in younger stage, one-seeded. SEED ovoid or ellipsoid, black, 19-20 x 14-17 mm; seedcoat black, 0.2 mm thick. GERMINATION remote; eophyll bifid.
Conservation
Endangered. Numbers are very low (less than 50 trees seen ). Both southern localities (where the bulk of the population occurs) are being destroyed rapidly.
Vernacular
Sindro madiniky (Betsimisaraka, Antanambe); Saroroira (Betsimisaraka, Ampasimanolotra); Vakapasy, Anive, Anivona (Tanala/Antaisaka).
Distribution
E Madagascar, between Mananara Avaratra and Vangaindrano.

[PW]
Use
Used in construction; hollowed trunks used for irrigation pipes.

Native to:

Madagascar

Ravenea julietiae Beentje appears in other Kew resources:

Date Reference Identified As Barcode Type Status Has image?
Jan 1, 2006 Rakotoarinivo, M. [RMJ334], Madagascar K000462752 No
Jan 1, 1995 Beentje, H.J. [4661], Madagascar 29047.855 No
Jan 1, 1995 Beentje, H.J. [4623], Madagascar 58855.000 No
Jan 1, 1995 Beentje, H.J. [4783], Madagascar 60435.000 holotype No
Jan 1, 1995 Beentje, H.J. [4784], Madagascar 60466.000 No
Jan 1, 1995 Beentje, H.J. [4784], Madagascar K000114641 No
Jan 1, 1995 Beentje, H.J. [4783], Madagascar K000114642 holotype Yes
Jan 1, 1995 Beentje, H.J. [4661], Madagascar K000114643 No
Jan 1, 1995 Beentje, H.J. [4623], Madagascar K000114644 No
Jan 1, 1995 Beentje, H. [4719], Madagascar K000114645 No
Jan 1, 1993 Cours, G. [4510], Madagascar K000114640 No
Beentje, H.J. [4787], Madagascar 29047.864 No
Beentje, H.J. [4787], Madagascar 59552.000 No
Beentje, H.J. [4722], Madagascar 60605.000 No
Baker, W.J. [1014], Madagascar 64093.000 No
Baker, W.J. [1014], Madagascar K000112632 No

First published in Kew Bull. 49: 646 (1994)

Accepted by

  • Govaerts, R. & Dransfield, J. (2005). World Checklist of Palms: 1-223. The Board of Trustees of the Royal Botanic Gardens, Kew.
  • Rakotoarinivo, M., Trudgen, M.S. & Baker, W.J. (2009). The palms of the Makira protected area, Madagascar. Palms; Journal of the International Palm Society 53: 125-146.

Literature

Palmweb - Palms of the World Online

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

Kew Backbone Distributions

  • Rakotoarinivo, M., Trudgen, M.S. & Baker, W.J. (2009). The palms of the Makira protected area, Madagascar. Palms; Journal of the International Palm Society 53: 125-146.

  • Herbarium Catalogue Specimens

    Digital Image © Board of Trustees, RBG Kew http://creativecommons.org/licenses/by/3.0/

  • 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