Family : Arecaceae
Text © Pietro Puccio
English translation by Mario Beltramini
The species, rather variable, is native to New Caledonia, where it lives in the humid forests at low and medium altitude.
The genus was honoured by the botanist Eugène Veillard (1819-1896) to the French naval officer Charles Marie Chambeyron (1827-1891), leader of the expedition in New Caledonia.
The name of the species is the combination of the Greek terms “makrόs” = big and “karpόs” = fruit, with obvious reference.
Common names: blushing palm, chambeyronia palm, flame thrower palm, Houailou red leaf palm, New Caledonia red-leaved palm, red feather palm, red leaf palm (English); palmier de Houailou, palmier de Nouvelle Calédonie (French); Rotblattpalme (German).
The Chambeyronia macrocarpa (Brongn.) Vieill. ex Becc. (1920) is a monoecious species with single, erect, stem, tall up to about 16 m with a diameter of 16-20 cm, enlarged at the base, smooth, of glossy green colour, at times with yellow striations, in the youngest part, on which stand out the rings trace of the junction of the fallen leaves.
Regularly pinnate, 2-4 m long, leaves, curved, of intense glossy green colour, often of a showy red, orange or bronze colour, during the first days of the opening, with at the foliar base wrapping totally the stem for a height of 1,2 m, thus forming a sort of an elegant capital, of green colour, at times covered by tiny whitish scales.
Petiole internally grooved, roundish externally, with small brownish scales.
Oblong pinnules with pointed apex, 0,8-1,3 m long and 5-10 cm broad in the median part, coriaceous, waxy, with prominent marginal and central nervations.
The inflorescences generate under the leaves on a short peduncle, are ramified, erect (hanging when in fruit), up to about 1 m long, with flowers placed in the typical triad (a female flower between two male ones), but in the apical part where only male flowers are present.
The inflorescence has the phenomenon of the proterandry, the male flowers ripe before the female ones; this avoids the self-fecundation, favouring the crossed one.
The fruits are from globose to ellipsoid, 4-5,5 cm long and 2,5-4,5 cm of diameter, of red colour when ripe, containing only one globose seed, of 2,5-3,5 cm of length and 2-3 cm of diameter.
It reproduces by seed which germinates in 3-4 months at the temperature of 22-24 °C.
Species with a great ornamental effect, isolated or in groups, with a fairly slow growth, it can be cultivated in the zones with tropical, subtropical climate and also warm temperate, where it may resist to occasional, and very short lasting, drops of temperature up to about -4 °C, even if with damage to the foliage, but with a particularly slow growth.
During the first years, it is to be maintained in a shade position, and then it can be gradually exposed in full sun.
It is not particular about the soil, provided it is well drained, but grows at the best in soils rich of organic substance constantly kept humid.
Young specimens can be utilized for indoors decorations in luminous position, but avoiding the direct sun.
Synonyms: Kentia macrocarpa Vieill. ex Brongn. (1873); Kentiopsis macrocarpa Brongn. (1873); Kentia rubricaulis Linden ex Salomon (1876); Kentia lindenii Linden ex André (1877); Cyphokentia macrocarpa (Brongn.) auct. (1878); Kentia lucianii Linden ex Rodigas (1878); Kentiopsis lucianii (Linden ex Rodigas) Rodigas (1882); Chambeyronia hookeri Becc. (1921).
The photographic file of Giuseppe Mazza