The preliminary studies show that: There are 99 families, 295 genera and 515 species of Magnoliophyta distributed in Hon Ba Nature Reserve. The family the most diverse is Rubiaceae (59 species, 11.46 percent total flowering plants)
each of other families comprise less than 59 species. The genus of Ficus comprises 10 species (1.94 percent total flowering plants)
each of other genera comprise less than 10 species. Among all plants, there are 269 species (2 classes, 78 families and 200 genera) are useful plants. There are 58 timber species (1 class, 28 families, 41 genera), 178 medicinal species (2 classes, 63 families, 145 genera), 22 ornamental species (2 classes, 14 families, 22 genera), 33 edible species (2 , classes, 21 families, 26 genera), 26 vegetable species (2 classes, 16 families, 23 genera), 9 dye species (1 class, 6 families, 9 genera), 5 species (1 class, 4 families, 4 genera) provide fibre, 1 species (1 class, 1 families, 1 genus) provide essential oil, 9 species (2 classes, 7 families, 8 genera) provide food for animal. 19 species are listed in Vietnam Red Data Book (part 2. Plants. 2007), there are 10 species in endangered category (EN), 9 species in vulnerable category (VU). Based on the above data, the authors can confirm the high diversity of plants in Hon Ba Nature Reserve.