Theophrastus,
Enquiry Into Plants and Minor Works On Odours and Weather Signs
(1916)
“ In the case of trees we may thus distinguish the annual parts, while it is plain that in annual plants all the parts are annual: for the end of their being is attained when the fruit is produced. And with those plants which bear fruit annually, those which take two years (such as celery and certain others [23] ) and those which have fruit on them for a longer time—with all these the stem will correspond to the plant's length of life: for plants develop a stem at whatever time they are about to bear seed, seeing that the stem exists for the sake of the seed. ”
