EXTERNAL FEATURES OF CYPSELAS OF SOME SPECIES OF COMPOSITAE, WITH THE HELP OF LM

The present study deals with the detailed external features of cypselas in 9 species belonging to 7 genera of the family Compositae. All the studied species exhibit different external features. Except Inula ensifolia, all the studied species are homomorphic. Morphologically, pappus structure is also important. In the cypsela ofTelekia speciosa, Aster alpinus , scaly pappus are present. In the cypsela of Elephantopus carolinianus, sitae type of pappus is present. In the cypselas of remaining studied species, barbellate pappus bristles are present. Layer of carpopodial cells are also variable and varies from 1-7 layers in studied species. In the cypselaof Aster alpines, stylopodium is enlarge and prominent. Among the studied cypselas, some cypselas are with slightly curved ( Inula ensifolia, Inula Britannica, Inula helenium ) in direction. Surface hairs are alwase, biseriately forked type. An artificial key is presented here to recognize the studied taxa at the specific level.