The collective term for the petals of a flower is the perianth.

The difference between a silique and silicle is based on the length:width ratio of the fruit

Which is the difference between a vine and a liana:

The personate flower is like a bilabiate flower, but has a constriction at the throat.

The Horse Latitudes are situated at about 30 degrees N and S latitude.

The Coriolis Effect is commonly mentioned in explanations of why hurricanes in the continental US seem to spin counterclockwise.

Gingers and some other plants have strange above-ground culms composed of concentric leaves. The flower is on the real stem and grows up through the concentric leaves.

By looking at the distribution of fossil plants, hypotheses are created about the age of those fossil groups.

What is the biggest threat we must prevent when introducing new plants

The prefixes “peri-“, “epi-” and “hypo-” mean (respectively):