The imperial scepter in the Byzantine or Eastern Empire.
3.
(capitalized) A genus of plants of the parsley family Apiaceae (of the order Umbelliferae), including some yielding asafetida. Members include Ferula asafoetida (Ferula foetida), the giant fennel (Ferula communis), and Ferula orientalis.
... the above ancient heathen philosophers relating to Learning and Books; but may not have been informed of the conciliatory manner in which our countryman De Bury has invited us to approach the latter. "Hi sunt magistri (says he) qui nos instruunt sine vergis et ferula, sine verbis et colera, sine pane et pecunia. Si accedis, non dormiunt; si inquiris, non se abscondunt; non remurmurant, si oberres; cachinnos nesciunt, si ignores." These original and apt words ... — Bibliomania; or Book-Madness - A Bibliographical Romance • Thomas Frognall Dibdin