The present study enumerates 317 taxa, distributed under 256 genera and 80 families that have neen recorded from the Kalesar National Park situated in Yamuna Nagar district of Haryana state. Of these, 6 species under 6 genera and 6 families belong to Pteridophytes and 311 flowering plant species distributed over 250 genera are belonging to 74 families. A brief account on the vegetation types and threatened species found in the National Park has been discussed. lkjka 'k orZ eku v/;;u gfj;k.kk

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... ; ds ;eq uk uxj tuin es a fLFkr dkys lj jk"Vª h; m|ku ls vfHkys f[kr 256 oa 'kks a ,oa 80 dq yks a dh 317 tkfr;ks a dk fooj.k çLrq r djrk gS A bues a ls 6 oa 'kks a ,oa 6 dq yks a ds va rxZ r 6 tkfr;ka i.kka Z xks a ls la ca f/kr gS a ,oa iq "ih; ikS /kks a dh 311 tkfr;ka 250 oa 'kks a es a lforfjr gS a ] tks 74 dq yks a ls la ca f/kr gS a A jk"Vª h; m|ku es a ik;s tkus okys fofHkUu okuLifrd iz dkjks a vkS j foyq Irçk; tkfr;ks a dk ,d la f{kIr fooj.k iz Lrq r 'kks /k i= es a fn;k x;k gS A dkys lj jk"Vª h; m|ku] ;eq uk uxj] gfj;k.kk ds la oguh; iknitkr dh ifjx.kuk ,-,u-'kq Dyk] nq xs Z 'k oekZ ,oa ,l-ds -JhokLro The sal (Shorea robusta) forest occupies a major part of Kalesar. The common associates of Shorea robusta are Adina cordifolia, Ficus racemosa, Ficus semicordata, Holarrhena pubescens, Holoptelea integrifolia, Mallotus philippensis, Millettia extensa, Mitragyna parvifolia, Senegalia catechu, Terminalia elliptica, etc. The shrubby layer is composed of species such as Clerodendrum infortunatum, Justicia adhatoda, Helicteres isora, Carissa spinarum, Woodfordia fruticosa, Desmostachya bipinnata, Flemingia macrophylla, etc. Some of the climbers like Phanera vahlii are also found in the sal forest. The common herbs are Alysicarpus vaginalis, These forests occur on exposed steep hill slopes and ridges, where drier conditions prevail. The biotic interferences and excessive grazing pressure has resulted in sparse tree layers and discontinuous vegetation, while shrubs become comparatively dense. These are characterized by stunted growth and many stemmed trees and shrubs with small thorny bushes. The common species recorded in this area are Butea