**4. Conclusions**

Five accessions of *Dendrobium* from Liwa Botanical Garden were identification based on morphological characters and phenetic relationships. The result of analysist 11 morphological characters showed leaf of *Dendrobium* have high variations. The phenetic relationship showed five accessions of *Dendrobium* from Liwa Botanical Garden can be classified into 2 main groups formed with a similarity index value of 0.813. The morphological characters that have a large influence on grouping are the ratio of length and width, cross section, and sitting of leaf based on PCA values. Variability of *Dendrobium* leaf characters can be possible due to the hybridization and outcrossing processes. The resulting phenetic dendrogram topology is supported by the morphological character classification. The results of the observation of 9 anatomical characters on the upper and lower surfaces of the leaves indicate that the leaf organs have high variations. Accessions IR015, CAT 140, and CAT 274 have stomata only on the lower surface, while CAT 144 has stomata on the upper and lower surfaces. This difference is due to the position of the leaves attached to the stem at CAT 144 forming an angle of 45̊C, while the others open horizontally. IR015, CAT 140, and CAT 274 the upper surface of the leaves is only composed of epidermis which is mostly irregular and pentagonal in shape. The highest number was in CAT 274 because the epidermis was smaller than IR015 and CAT 144. The types of stomata in all types were the same, namely tetracytic in the form of stomata surrounded by 4 neighboring cells. The stomata are kidney-shaped and the epidermis is irregular, pentagonal, and hexagonal in shape.
