Privet and Hermannia, are which type of plants?
Privet A privet is a flowering plant in the genus Ligustrum. The genus contains about 50 species of erect, deciduous or evergreen shrubs, sometimes forming small or medium-sized trees, native to Europe, north Africa, Asia, many introduced and naturalised in Australasia, where only one species extends as a native into Queensland. Some species have become widely naturalized or invasive where introduced. "Privet" was originally the name for the European semi-evergreen shrub "Ligustrum vulgare", and later also for the more reliably evergreen "Ligustrum ovalifolium" used extensively for privacy hedging, though now the name is applied to all members of the genus. The generic name was applied by Pliny the Elder (23–79 CE) to "L. vulgare". It is often suggested that the name "privet" is related to "private", but the OED states that there is no evidence to support this.
Grewia The large flowering plant genus Grewia is today placed by most authors in the mallow family Malvaceae, in the expanded sense as proposed by in the APG. Formerly, it was placed in either the linden family (Tiliaceae) or the Sparrmanniaceae. However, these were both not monophyletic with respect to other Malvales - as already indicated by the uncertainties surrounding placement of "Grewia" and similar genera - and have thus been merged into the Malvaceae. Together with the bulk of the former Sparrmanniaceae, "Grewia" is in the subfamily Grewioideae and therein the tribe Grewieae, of which it is the type genus.