or SPINACH. See SPINACIA.

SPINE, in botany, thorns, rigid prickles: a species of arna, growing on various parts of certain plants for their defense; spinæ ramorum arcent pecora. On the branches we find examples in the pyrus, prunus, citrus, hippochaes, gmelina, rhannus, lycium, &c.; on the leaves in the aloe, agave, yucca, ilex, hippomane, theophrasta, carlina, &c.; on the calyx, in the carduus, cynicus, centauria, moluccella, galeopsis, &c.; on the fruit, in the trapa, tribulus, murex, spinacia, agremonia, datura, &c.