The CLASSIFICATION Of Nail

The CLASSIFICATION Of Nail

A. (Psilopyta)

The Psilophyta Division is also called an ancient nail. As the name implies, this nail plant is already extinct. Ancient nails are nails that are not leafy. If any, the ancient nail has only small leaves (microfi l) that have not been deferred. Therefore, photosynthesis is in stems containing chlorophyll. This nail plant also has the nature of homospora Examples of horse spikes are Rhynia sp. Which is a leafless primitive nail and Psilotum nudum which is a leafless nail.

B. (Lycophyta)

The body structure is quite complete, which has the roots, stems and leaves true. The leaves are small (microfil), not stemmed and one-boned leaf. Sporangium is present in the leaf axillary, usually sporophyll collected at the end of the stem or branch and forming a cone-like building, called strobilus.

Based on the presence or absence of ligula (tongue in the leaf), this division is divided into two classes namely Eligulopsida Class and Ligulopsida Class. The Eligulopsida class is a wire nail that has no ligula,

For example Lycopodium sp. While Ligulopsida is a wire nails that have ligula, for example paku rane (Selaginella sp.).                    

C. Horsetail Horse (Arthrophyta Division)

Arthrophyta Division has a body that branches are rocky and clearly look books and segments. Small leaves such as membranes and composed of a concrete. Sporophils are always different from ordinary leaves, usually shielded with a number of sporangium on the underside. Sporophyll is a shaped body of a mace or cone at the end of a stem or branch which is also referred to as strobilus. The root is very small and smooth, found in books of rhizomes or at the base of the stem. Some species have some kind of bulbs to deal with bad times. Horsetail is a plant with a single genus, namely Equisetum. The genus contains only about 25 species, some live on land and some live in swamps. An example is a horse tail (Equisetum debile). 

D.  (Filicophyta)

Filicophyta also include plants that have a complete body structure. True springs already have true roots, stems, and leaves. The trunk is embedded in the ground forming a rihzoma. The leaves are macrophil and their shape is various, stemmed, and bone branches. When young, the leaves will curl in ujun Examples of plants spikes true is platycerium (Plathycerium coronarium), spikes bird's nest (Asplenium nidus), nail maidenhair ferns (Adiantum sp.), Nail paddy (Azolla pinnata) and clover (Marsillea crenata ). Meanwhile, the lower side there are many sporangium. 

Asplenium nidus

Benefits

Here are Some Benefits of this Nail Plant:

1. Maintained as an ornamental plant, for example platycerium (Platycerium bifurcatum), spikes bird's nest (Asplenium sp), maidenhair ferns (Adiantum sp) and nail rane (Selaginella sp)

2. Producing medicines eg: Aspidium sp, Dryopteris filix mas, and a Lycopodium clavatum.

3. As a vegetable, eg clover (Marsilea crenata) and Pteridium aqualium

4. As a green manure, for example Azolla piñata,

5. As one of the materials in making wreaths, for example Lycopodium cernuum.