Sometimes it is a generic name for a large group; sometimes the designation of a particular section of that group.
"The Ethnology of the British Colonies and Dependencies"
Robert Gordon Latham
Each is a generic or specific designation as the case may be.
"The Ethnology of the British Colonies and Dependencies"
Robert Gordon Latham
It is equally important in its bearing on the hypothesis of genetic evolution that the generic groups above named have persisted from the first known appearance of Dicotyledons, throughout the whole of the intervening ages, and still hold their places unchanged among the existing forms of vegetation.
"The Old Riddle and the Newest Answer"
John Gerard