INTRODUCTION
Orchidaceae with 25,000 -30,000 species shows a high level of
specialization and a great capacity for adaptation to a different
environments, which have contributed to the morphological and
physiological, vegetative organization, that vary between species
(Dressler, 1993;Frander et .al 2017; Udupa ,2011). Orchidaceae is
one of the largest family among monocots. Orchidaceae is a second
largest flowering plant family of herbaceous, perennials that includes
terrestrial ,saprophytic, lithophytic, and epiphytic species (Pridgeonet.al 1993). Orchids are associated with an endophytic symbiotic
fungus, mainly in their roots, terrestrial orchids mainly grows in floor of the forest and grassland.
Habenaria Wild is an orchid genus of about 600 species widely
distributed throughout the tropical, subtropical and temperate regions
of the world. This genus of terrestrial orchids is one of the genera
having largest number of species. In India, it is represented by 17
species in Western Himalaya (Jalal and Jayanthi, 2015). InHabenaria Wild. Prominent paired tuberoids with a small third
tuberoid is also seen ( Pande et .al . 2010) in this species flowers are highly attractive. The species can be easily identified when
in bloom, but the vegetative characteristic (number and size of tubers
and leaves, stem height) overlap in many of these. These structural and
physiological variations permit plants to survive and reproduce in a
variety of environmental conditions and contribute to protection against
stress and herbivore damage (Frander et .al 2017.) Particularly
in the anatomy of groups are of a descriptive nature, and have focused
upon the search for similarities or differences that contribute to the
taxonomic determination.