In these stems the oldest and hardest wood is on the outside-not in the center, asit is in the exogens. The stem grows
from within; the new wood is in the center. Plants of this kind are called endogens, which means growing from within. These endogens or mono-cotyledons form a small classof plants. The palms, canes, and bamboos are the chief ofthem."
Lesson 05
Capillary Attraction
