Myrialepis

Myrialepis paradoxa

Myrialepis paradoxa is a native of Asia, climbing palm. She is the only member of the genus Myrialepis. The flowers are - unusual with palm trees - one at the inflorescence axes.

• 4.1 Notes and references

Features

The representatives are more stocky, high climbing reinforced Rattanpalmen. You are hapaxanth and dioecious. The tribe has long internodes and noticeable scars. Basal arise vegetative side axes relative to the leaves.

The chromosome number is unknown ( as of 2008).

The leaves of adult palms are large, pinnate and have a tendril. The leaf sheath is Roehrig. Knee or Ochrea are not formed. The petiole is grooved very short to long and deep. The rachis is proximally as the stem hardly reinforced, distally strongly reinforced with regular sets of hook-like spines enter. The numerous leaflets are lanceolate, entire, sometimes reinforced with short marginal spines.

Inflorescences

The inflorescences are formed simultaneously in the axils of the distal, often reduced leaves. There are three orders of inflorescence axes. The peduncle is short, the cover sheet is Roehrig, zweikielig hidden with two triangular lobes and in the leaf sheath. Bracts on the inflorescence stem missing. The inflorescence axis is substantially longer than the peduncle. Your bracts are Roehrig, nearly double line ( distich ), each carrying a lateral axis. The flower-bearing Rachillae are very short and are formed by the axes of different order. Male Rachillae carry groups of up to eight flowers, female Rachillae carry groups of two to seven flowers.

Flowers

The male flowers are symmetrical. The calyx is membranous, Roehrig and has three lobes. The crown is skinned and cut almost to the ground in three triangular lobes. The six stamens are at the base of Kronlappen. The pollen is ellipsoidal and bisymmetrical. The longest axis measures 31 to 38 microns.

The female flowers are larger than the males. The calyx is membranous, Roehrig with three lobes. The crown is membranous, divided almost to the base into three lobes. At the base of the crown is a Staminodienring. The gynoecium is incomplete dreifächrig with three ovules. It is filled with spherical and small scales. The three stigmas are short and are apically. The ovules are basal and are anatrop.

Fruit and seeds

The fruit is one seed, the perianth remains on the fruit that remains scars are very small. The exocarp is staffed with very small, irregularly -standing shed. The mesocarp is thin and fibrous. The endocarp is not differentiated. The seed is at the base, its sarcotesta is thick, but not juicy. The endosperm is homogeneous.

Dissemination and locations

Myrialepis paradoxa occurs in Indo-China, Burma, Thailand, the Malay Peninsula and Sumatra. It grows from sea level to about 1000 m above sea level. It is widespread and often forms thickets. Like the other hapaxanthen Rattanpalmen she comes in preference to in disturbed habitats of primary forests.

System

The genus Myrialepis is placed in the subfamily Calamoideae, Tribe Calameae within the family Arecaceae. They, together with the genera Plectocomia and Plectocomiopsis the subtribe Plectocomiinae. The relationships between the three genera are unclear.

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

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. 186-188.