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The presence of diversity in the Stellera chamaejasmepopulation was found via their chemical composition. The eight collected samples were grouped into two chemotypes on the basis of the amount of neochamaejasmin B and chamaejasmine. Diversity was also found in the amount of afzelechin. The stereochemistry of neochamaejasmin B was confirmed by NOE experiment.

Five samples of four Saussureaspecies, S. hieracioides, S. stella, S. graminea, and S. tatsienensis, collected in Sichuan Province, China were studied and seven new diynes and a new alkene derivatives were isolated along with 16 known compounds. Absolute configurations of two of the new compounds were established using a modified Mosher's method.

Four Ligulariaindividuals possessing morphological characters of both L. nelumbifoliaand L. subspicatawere discovered in Shangrila County, Yunnan Province, China. DNA sequencing showed that the specimens were hybrids of the two species and their maternal parent was L. subspicata.The chemical composition of the root extract was examined for three of them as well as L. nelumbifoliaand L. subspicatacollected sympatrically. Nelumol was isolated from L. nelumbifolia, and furanoeremophilanes from L. subspicata. While nelumol and furanoeremophilanes were detected in two of the hybrid samples, only furanoeremophilanes were detected in the others.