In the Civil War, Book 1, he is merely mentioned as having fortified cingulum at his own cost.
"Plutarch's Lives Volume III."
Plutarch
The plant was formerly known as cingulum Sancti Johannis, since a crown made from its sprays was worn on St. John's Eve, to gain security from evil possession; also as Zona divi Johannis, it being believed that John the Baptist bore a girdle of it in the wilderness.
"Herbal Simples Approved for Modern Uses of Cure"
William Thomas Fernie