orchid are plants that go to the family Orchidaceae , a diverse and widespread group of flowering plants with blooms that are often colourful and fragrant . Orchids are cosmopolitan plant that are found in almost every habitat on Earth except glacier .   The earthly concern ’s richest diversity of orchid genera and species is found in the   tropics .

Orchidaceae is one of the two large family unit of flowering plant , along with the   Asteraceae . It contains about 28,000 presently accept species distributed across 763   genera . Orchid flowers often have petals that are fused together to some extent , forming a classifiable shape . They also have three sepal and three flower petal , with one of the petals modify into a lip or labellum , which is usually the most blazing part of the bloom . This lip often serves to draw in pollinator .

The lip is often enlarged , multifariously shaped , and can be highly colored or patterned . Its function is to guide pollinators to the reproductive organ of the flower . The lip can be flat , pouch - like , or even spur - like . Unique to orchids , the pillar ( gynostemium ) is a fused structure of the stamens and pistil . This make orchidaceous plant have what is termed as zygomorphic symmetry ( bilaterally symmetrical , like a human face ) .

Many orchidaceous plant produce a perfume to attract pollinator . Some orchid mimic the smell of distaff insect to attract male for pollination ( pseudo - copulation ) . rather of loose pollen , orchids have pollinia , which are mass of pollen that stick together . This is an efficient way to transfer pollen during pollenation .

Some species bloom for just a few days , while others can keep their flowers for month . The blooming flow can alter greatly among different metal money . The flowers come in a all-embracing regalia of color , from Caucasian and yellows to vivid purple , pink , and bolshy . Some have blot or stripes , and their texture can range from velvety to waxy .

Orchid flowers can be tiny , measuring just millimetre across , or very large , like the Grammatophyllum speciosum , which has some of the large orchid flowers in nature . They can grow as epiphyte ( on trees ) , lithophytes ( on rocks ) , or terrestrials ( in soil ) . This diversity in habitat influences their root system , which are often adapt to plunge moisture and nutrient from the air ( in the type of air plant ) .

Ochid Flowers

genus Phalaenopsis ( Moth Orchid )

Dendrobium

Cattleya

Oncidium ( Dancing Lady Orchid )

Paphiopedilum ( Slipper Orchid )

Vanda

Cymbidium

Miltoniopsis ( Pansy Orchid )

Stanhopea

Coelogyne

Catasetum

genus Angraecum

Mormodes ( Goblin Orchid )

Laelia

Aerides ( Cat - tail Orchid )

Rhynchostylis

Bulbophyllum

Lady ’s Slipper Orchid ( Cypripedium )

Zygopetalum

Miltonia ( Pansy Orchid )

Ludisia ( Jewel Orchid )

Masdevallia

Encyclia

Phragmipedium ( South American Slipper Orchid )

Brassavola

Gongora

Sobralia

Pleurothallis

Epidendrum ( Star Orchid )

Maxillaria

Aerangis

Trichocentrum ( Mule Ear Orchid )

Bifrenaria

Cochleanthes

Oeceoclades

Polystachya

Thunia

Grammatophyllum ( Giant Orchid )

Anoectochilus ( Jewel Orchid )