It is a small annual, typically not exceeding 30 centimeters in height.

Each flower has a long, very narrow tube which may exceed 3 centimeters.

The fruit is a very long silique which may exceed 10 centimeters in length.

It is an annual herb not generally exceeding 15 centimeters in height.

It may exceed 4 centimeters in length and generally drops off the plant when dry.

This is a small annual herb not exceeding ten centimeters in height.

It is a very small daisy, not exceeding 6 centimeters in height.

The leaves grow from the base of the stem and can exceed 20 centimeters in length.

The flowers are trumpet-shaped and may exceed two centimeters in length.

The largest basal leaves may exceed 30 centimeters in length.