Common Name: Antirrhinum (Snapdragon, Snap Dragon)
Latin Name:Antirrhinum spp. esp. Antirrhinum majus & antirrhinum siculum
Family Name: formerly Scrophulariaceae, now Plantaginaceae
There are no known hazards so the flowers and leaves are fine as part of a varied diet. Snapdragon flowers closely resemble those of Toadflax, which is toxic, so be sure of your identification before you offer this plant to your tortoise.
One way to distinguish between Antirrhinum and Toadflax is that the flowers of Toadflax have a long pointed spur, extending down from the main body of the flower, and this is absent in Antirrhinum flowers.