Horticulture Principles and Practices

FIGURE 3–25 Selected common
leaf tips and bases.
Acute Aristate Cuspidate Mucronate Emarginate
(a) Leaf tips
Cunneate Attenuate Obtuse Cordate Haste
(b) Leaf bases
Prop roots
Swollen root
FIGURE 3–26 A swollen root. This
root modification may assume a conical
and elongated shape, as in carrot
(Daucus carota), or a round shape, as in
radish (Raphanus sativus).
FIGURE 3–27
Prop roots of corn (Zea mays).
Moss pole
Aerial roots
Radicle
FIGURE 3–28 Aerial roots are used in
certain species to aid in the climbing of
vines onto nearby physical supports.
FIGURE 3–29
germinating seed.
A radicle of a
3.5 Roots 83