Abstract:Hedinia tibetica (Thoms.) Ostenf,an endemic Cruciferae species growing near glacier region is one of the typical alpine cold-resistant plant.In order to insight into the morphological adaptation characteristics under the extreme environment,we studied the anatomical structure of nutritive organs,such as leaf,stem and root,of H.tibetica (Thoms.) Ostenf by Paraffin section method.The results showed that there were apparent wax layer and cuticle spur on the leave surface and all three nutritive organs had well developed aerenchyma.In addition,2～4 layers of the palisade tissue were observed and were obviously thicker than the sponge tissue.The transaction of root showed “wheel” shape and moreover exhibited clearly belt thickening and developed marrow cavity.Furthermore,epidermal and cortical cells of root and stem had the apparent plasmolysis phenomenon.This species evolved the obviously morphological and anatomical characteristics to adapt to gale,frozen and drought stress in the alpine region.All these special anatomical structures might be the adaption of H.tibetica to the environment in glacier regions.