The stem may be a stalk or vine
To stand erect, or creep, or twine—
For frailest plant, or firmest oak
That's ne'er by storm of winter broke.
THE LEAF
A leaf has a stem, and of stipules a pair,
Though the stipules are often quite small, or not there.
A leaf has a blade, and of ribs one or more;
While of veins and of veinlets it has many score.