Chambeyronia Vieill.
  • Bull. Soc. Linn. Normandie, sér. 2, 6: 229 (1873) 


Notes: Distribution: New Caledonia

General Description

Moderate, solitary, unarmed, pleonanthic, monoecious palms. Stem erect, ringed with leaf scars, enlarged at the base but roots not prominent. Leaves regularly pinnate, curved, spreading, often red when first exposed; sheath tubular, forming a prominent crownshaft, with or without a shallow notch opposite the petiole, glabrous adaxially, lightly or densely covered in scales abaxially; petiole channelled adaxially, rounded abaxially, with scattered small brown scales; leaflets acute to acuminate, single-fold, wide, waxy or glabrous adaxially, small brown scales scattered abaxially, midrib and marginal ribs large, transverse veinlets obscure or evident. Inflorescences infrafoliar, protandrous, branched to 2(–3) orders basally, to 1 order distally; peduncle very short; prophyll tubular, completely encircling the peduncle and enclosing the peduncular bract, caducous, dorsiventrally flattened, with 2 wide lateral keels, chartaceous, glabrous adaxially, lightly or densely scaly abaxially; peduncular bract lacking keels and thinner, with a more definite beak, otherwise like the prophyll; rachis longer than the peduncle bearing spirally arranged, low, or prominent pointed, bracts subtending branches or rachillae; rachillae rather stout, tapering, sinuous, lightly or densely scaly; rachilla bracts prominent, spreading or ascending, spirally arranged, subtending triads of flowers basally and paired or solitary staminate flowers distally, the triads rather distant, sometimes appearing as though impressed in the axis; bracteoles surrounding the pistillate flower unequal, not sepal-like, the larger one shorter or exceeding the triad bract. Staminate flowers asymmetrical to subsymmetrical; sepals 3, distinct, acute to long pointed; petals 3, distinct, valvate, asymmetrical, angled, and strongly nerved to nearly symmetrical and smooth when dry; stamens 19–55, filaments awl-shaped, briefly inflexed, anthers erect in bud, linear, dorsifixed, bifid basally, emarginate apically, latrorse, the connective elongate; pistillode lacking. Pollen grains ellipsoidal, slight or obvious asymmetry; aperture a distal sulcus; ectexine tectate, perforate-rugulate, aperture margin similar; infratectum columellate; longest axis ranging from 45–75 µm [2/2]. Pistillate flowers symmetrical; sepals 3, distinct, broadly imbricate, acute; petals 3, distinct, broadly imbricate with prominently valvate apices; staminodes 3, small, tooth-like, borne at one side of the gynoecium; gynoecium with 3 spreading stigmas, unilocular, uniovulate, ovule laterally attached, hemianatropous. Fruit subglobose to ovoid, with apical stigmatic remains; epicarp smooth, underlain by a mesocarp of oblique, short, pale sclereids over parenchyma with dispersed tannin cells and stout, flat, longitudinal, anastomosing fibres adherent to the endocarp, endocarp thin, fragile, not operculate. Seed attached by an elongate lateral hilum, raphe branches numerous, anastomosing, endosperm homogeneous; embryo basal. Germination adjacent-ligular; eophyll bifid. Cytology: 2n = 32.

Diagnostic Description

Moderate pinnate-leaved tree palms from New Caledonia with broad leathery-textured leaflets and relatively large frut.

Morphology

Leaf (Uhl and Martens 1980), root (Seubert 1998a,1998b), and fruit (Essig and Hernandez 2002).

Biology

Chambeyronia macrocarpa is found in wet forest or gallery forestnearly throughout New Caledonia, whereas C. lepidota occurson schistose soils only in the north-eastern part of the island.

Distribution

Two species in New Caledonia.

Uses

Chambeyronia macrocarpa is probably the most widely cultivated New Caledonian palm.

Common Names

Common names unknown.

Distribution Map

 
  • Native distribution
Found in
  • Pacific Southwestern Pacific New Caledonia

  Bibliography

  • 1 J. Dransfield & N. Uhl & C. Asmussen & W.J. Baker & M. Harley & C. Lewis, Genera Palmarum. The evolution and classification of palms. 2008
  • 2 Govaerts, R. & Dransfield, J. (2005). World Checklist of Palms: 1-223. The Board of Trustees of the Royal Botanic Gardens, Kew.
  • 3 Govaerts, R. (1999). World Checklist of Seed Plants 3(1, 2a & 2b): 1-1532. Continental Publishing, Deurne.

 Information From

Palmweb - Palms of the World Online
http://www.palmweb.org
Palmweb 2011. Palmweb: Palms of the World Online. Published on the internet http://www.palmweb.org. Accessed on 21/04/2013
  • A Content licensed under Creative Commons Attribution-NonCommercial-ShareAlike 3.0 Unported License
  • B http://creativecommons.org/publicdomain/zero/1.0
eMonocot
http://e-monocot.org
eMonocot. (2010, 1st November). Retrieved Wednesday, 8th February, 2012, from http://e-monocot.org.
  • C Content licensed under Creative Commons Attribution-NonCommercial-ShareAlike 3.0 Unported License
World Checklist of Selected Plant Families
http://apps.kew.org/wcsp/
WCSP 2014. 'World Checklist of Selected Plant Families. Facilitated by the Royal Botanic Gardens, Kew. Published on the Internet; http://apps.kew.org/wcsp/ Retrieved 2011 onwards
  • D See http://kew.org/about-kew/website-information/legal-notices/index.htm You may use data on these Terms and Conditions and on further condition that: The data is not used for commercial purposes; You may copy and retain data solely for scholarly, educational or research purposes; You may not publish our data, except for small extracts provided for illustrative purposes and duly acknowledged; You acknowledge the source of the data by the words "With the permission of the Trustees of the Royal Botanic Gardens, Kew" in a position which is reasonably prominent in view of your use of the data; Any other use of data or any other content from this website may only be made with our prior written agreement.