At first sight, A. chamaepitys looks like a tiny pine tree with a reddish purple four-cornered hairy stem.

In general, it is an annual herb producing a branching, purple stem with a coat of glandular hairs.

The plant produces a hairy, glandular purple stem up to about 35 centimeters tall.

Monardella hypoleuca is a perennial herb producing an erect, purple stem coated in short hairs.

This is an annual herb producing a hairy purple stem up to about 35 centimeters in maximum height.

It has a deep purple stem, which is not hollow, and there are purple-black markings at the leaf joints.

The purple stem had split open into a dozen sections which lay flat on the ground around it.

The bright, spicy sauce is flavored with red basil, a distinctive Thai herb known for its purple stem and green leaf.

Its deeply lobed leaves are mainly basal, with those located further up the dark purple stem being much smaller.

It is a perennial herb producing an erect, purple stem up to about 40 centimeters in maximum height.