Of the latter genus, rubus, there is one set of forms respecting which it is still a question whether it ought to be regarded as constituting three species or thirty-seven.
"The Antiquity of Man"
Charles Lyell
At any rate, the raspberry of the ancients is rubus Idoeus.
"Success With Small Fruits"
E. P. Roe
It was eventually made clear that it belonged to the tender rubus Idoeua class, and, therefore, was not adapted to general cultivation, especially on light soils, and under sunny skies.
"Success With Small Fruits"
E. P. Roe