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Hernandiaceae : ウィキペディア英語版 | Hernandiaceae
The Hernandiaceae are a family of flowering plants, angiosperms, in order Laurales. Consisting of five genera with about 59 species, they are distributed over the world's tropical areas, some of them widely distributed in coastal areas, but they occur from sea level to over 2000 m. The family is closely related to Lauraceae, and many species inhabit laurel forest habitat; they have laurel-like (lauroid) leaves. Based on morphology, chromosome numbers, geographical distribution, and phylogenetic analyses, the family is clearly divided into two groups that have been given the rank of subfamilies Gyrocarpoideae and Hernandioideae. == Overview== The Hernandaceae are important components of tropical forests ranging from low-lying to montane forests. Because of the special lack of worldwide knowledge about the family in general, little is known about their diversity yet. The knowledge of this family to national level, is that to be expected in countries with limited economic means with the vast majority of species indeterminate or even poorly determined. recently described new species come from collections made in countries with limited economic means. Therefore, an increase in the study of family, at national level, is of utmost importance for the progress of the systematics of the family in general. Trees of the Hernandiaceae family predominate in the world's laurel forests and cloud forests, which occur in tropical, subtropical, and mild temperate regions of the Northern and Southern Hemispheres, highlighting the African, Indian and Pacific Ocean islands, New Caledonia, Madagascar, and central Chile. The main economical uses for this family are essential oils, found in many species that are important for spices and perfumes, and the hardwood of many species is a source for timber around the world. A great number of species are in danger of extinction due to overexploitation as medicinal plants or timber extraction and loss of habitat.
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