Abstract: Morphorgy, micoscopic structure (starch grain; stoma). phytochemistry and palynology of Lilium in North-eastern China were studied. It turns out that the shape, hilum and annular striation of starch grain whether it is smiple or compound, as well as the subsidiary cells of stmas which varied in size and shape in different species are of taxonomic importance. In addition, an examination of the pollen grains under light microscope and scanning electron microscope shows that the difference between the species existed in size of pollen grains, the shape of coloporates and the shape of muri. Detailed descriptions are given of starch grains. stomata, pollen grans. In the present paper, 10 species, 2 varieties and 1 form are recognized in which 1 species is newly combinated.