Herbarium is a storehouse of a collection of plant specimens that are dried, pressed, labelled and preserved on sheets. These sheets are stored and systematically arranged for further scientific study.
The herbarium sheets carry a label providing information about the date and place of collection, English, local and botanical names (scientific name), family, collector’s name, etc.
However, the label of herbarium sheet does not carry information about the class to which the plant belongs.
So, the correct answer is option D.