Magnoliophyta
Ovules (and seeds) enclosed within carpels (fruits); the carpels bearing stigmas upon which the pollen lodges. Pollen produced in the anthers of stamens. Carpels and stamens usually surrounded by a perianth; the whole constituting a flower which may be uni- or bi-sexual (= angiosperms) Magnoliophyta
Flowers usually 4- or 5-merous (rarely 3-merous, when the plants are usually branching trees, shrubs or parasitic twiners). Leaf venation usually reticulate. Embryo with 2 cotyledons. Trees, shrubs, herbs, climbers Magnoliopsida
Flowers in heads or spikes or racemes
Branches with rigid spines Maclura
Woody climber or straggling shrub. Leaves oblong to elliptic, mostly 3–8 mm long. Compound fruit 1–2 cm diam., yellow-orange. Male flower heads 6–8 mm diam. Coast and adjacent plateaus. In or near RF. Cockspur Thorn Maclura cochinchinensis
Trees or tall shrubs. Leaves ovate, mostly 5–15 cm long. Compound fruit 10–15 cm diam., yellowish-green. Male flower heads 15–20 mm diam. Occasionally naturalized. Introd. from N. America. Osage Orange Maclura pomifera