Big date hand options development and you will distribution hinges on ground qualities, variety of people, breadth of your below ground liquids and you can assortment
The date hand trunk, also called stalk otherwise stipe try straight, cylindrical and you can columnar of the same girth entirely right up. The new thickness does not raise as the shelter of fronds keeps completely establish. It is brown from inside the colour, lignified and without having any ramification (Figure step 1). Their average circumference is all about 1 to 1.10 meters.
The trunk is made from tough, fibrous vascular packages cemented together in the a matrix out-of mobile tissue which is much lignified nearby the external part of the trunk. Are good monocotyledon, big date hand doesn’t have a cambium coating.
The rear is included for quite some time towards the bases out-of the outdated deceased fronds, so it’s rough, however with decades such angles climate therefore the trunk becomes convenient having apparent cicatrices of them angles. Straight growth of time hand is ensured by their critical bud, called phyllophor, and its particular level you will come to 20 metres.
Lateral otherwise lateral development try made certain by a supplementary fascicular cambium hence in the near future vanishes, and you can which results in a steady and you can consistent trunk area width throughout the brand new palm’s entire life. (далее…)