Abstract
Histology and the chemical constituenits of the fruis of Coelopleurum lucidum L. var. Gmelini (DC) HARA (Umbelliferae) are reported. The characteristics of the fruit were as follows : In cross section a large aperture was in the mesocarp surrounding a seed in the ripe fruit ; 3 dorsal ridges were smaller than 2 lateral ones but similar in form, which were papillate ; vascular bundles were the same as those in the Angelica group and different from the Ligusticum group. Three coumarin derivatives were isolated and identified as isoimperatorin, C16H14O4, mp 107-109°, prangolarin, C16H14O5, mp 103-104°, and (+)-oxypeucedanin hydrate, C16H16O6, mp 128-129.5°. These homologous substances were not artefacts formed during separation, but derived from the fruits, and they were different in oxidation levels in the side chain.
