Poplar.
_The Magnet_ (Vol. vi. _passim_).--This was used by Claudian apparently as
symbolical of Venus or love:
"Mavors, sanguinea qui cuspide verberat urbes,
Et Venus, humanas quae laxat in otia curas,
Aurati delubra tenent communia templi,
Effigies non una Deis. Sed ferrea Martis
Forma nitet, Venerem _magnetica gemma figurat_."--Claud. _De Magnete._