Phoenicophorium

Phoenicophorium borsigianum

Phoenicophorium borsigianum is an endemic to the Seychelles palm. It is the only species of the genus Phoenicophorium.

• 4.1 Notes and references

Features

Phoenicophorium borsigianum is a medium-sized, single -stemmed palm. Young specimens are reinforced, at the age they are more or less unarmed. They are monoecious getrenntgeschlechtig ( monoecious ) and bloom more than once. The stem is erect and occupied with conspicuous annular leaf scars. Young palms bear numerous black spines.

The chromosome number is 2n = 32

The leaves are large, lobed and divided into two parts. You fall off with a smooth scar. The leaf stalks are fiederförmig. The leaf sheaths open and do not form a distinct Kronschaft. The sheaths are tight young hairy and covered with black spines but are subsequently rather bare. The petiole is well developed and thorns also black youth. The leaf blade is divided into two and has very showy, fiederförmig projecting ribs. Along the abaxial ribs they tear down to one-eighth to one-third of the length. The leaf blade is light green, often with a reddish tinge. The upper leaf surface is glabrous, the lower surface is densely covered with dot-like scales.

Inflorescences

The inflorescences are individually between sheets ( interfoliar ) and are at the bottom of double, single branched at the top. The inflorescences are protandrous. The peduncle is long and winged at the base, unarmed and bare. The cover page is at some distance from the peduncle base, is persistent, leathery, Roehrig and zweikielig. There is a bract on peduncle that targets at some distance from the previous sheet, but is wrapped by this. It's woody, beaked striking, deciduous and unarmed. It is Roehrig, then tears but on the whole length. The inflorescence axis is significantly shorter than the stem. Your bracts are small, triangular and unobtrusive. The first-order lateral axes are spirally in groups, are more continuous. The flower-bearing axes ( Rachillae ) are bald, thin, long and flexible. The flower- free region is short, the flowers are spirally arranged in triads. The Brakteolen are very small.

Flowers

The male flowers are slightly asymmetrical. The three sepals are not fused and are imbricat. They are round and keeled. The three petals are four to five times as long as the sepals. They are also not adherent, but are valvat. There are 15 to 18 stamens, they are short in the bud, the bloom was long, slender and wear long anthers. These are Medifix, arrow-shaped in the lower region and are latrors. The pollen is ellipsoidal and bisymmetrical. The germ is opening a distal sulcus.

The female flowers are spherical and about the same size as the male. The three sepals are free imbricat, rounded and keeled. The three petals are free, roundish, imbrikat and have short, triangular peaks. There are six tooth-like staminodes. The gynoecium is asymmetrical ovoid and consists of a compartment with an ovule. The three stigmas are apically. The ovule is where the side.

Fruits

The fruit is one seed, red in color, rather small and ovoid to ellipsoid. The perianth is available at the ripe fruit, the scars radicals subbasal. The exocarp is glossy, the mesocarp is thin, fleshy and has the endocarp down a thick layer of tannin cells. The endocarp is thin and cartilaginous. The seed is ovoid, basally located and has a rounded hilum. The few Raphe branches are anastomosing. The endosperm is deeply grooved ( ruminat ).

Dissemination and locations

Phoenicophorium borsigianum is widely used in the Seychelles. It occurs from sea level to about 300 m above sea level, often before about it is much less likely to be found. Sometimes it occurs in pure stands. The species is relatively tolerant to noise. It is often planted as an ornamental plant.

System

The genus is placed Phoenicophorium Verschaffeltiinae within the family Arecaceae in the subfamily Arecoideae, Tribe Areceae and subtribe. Her sister genus is Nephrosperma.

In the World Checklist of Selected Plant Families of the Royal Botanic Gardens, Kew, just the way Phoenicophorium is borsigianum recognized.

The name comes from the Greek words for phoenix palm and phorios for stolen together. Originally for later describer of the genus, Hermann Wendland, provided specimen was the Royal Botanic Gardens, Kew has been lost by theft.

Documents

• John Dransfield, Natalie W. Uhl, Conny B. Asmussen, William J. Baker, Madeline M. Harley, Carl E. Lewis: Genera palmarum. The Evolution and Classification of Palms. Second edition, Royal Botanic Gardens, Kew 2008, ISBN 978-1-84246-182-2, pp. 613-615.