Waldo rockcress facts for kids

Quick facts for kids Waldo rockcress
Scientific classification
Kingdom:	Plantae
Clade:	Tracheophytes
Clade:	Angiosperms
Clade:	Eudicots
Clade:	Rosids
Order:	Brassicales
Family:	Brassicaceae
Genus:	Arabis
Species:	A. aculeolata
Binomial name
Arabis aculeolata Greene
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Arabis aculeolata, also known as Waldo rockcress, is a type of flowering plant. It belongs to the mustard family. This plant is special because it grows naturally in a small area in the mountains of southern Oregon. It is not very common and prefers to grow in a specific type of soil called serpentine soil. There have been some reports of it growing in Del Norte County, California, but these have not been officially confirmed.

What Does Waldo Rockcress Look Like?

Waldo rockcress is a plant that lives for many years. It grows from a tough base called a caudex. This base is covered with large hairs and old leaf bases. The plant usually has one or more stems that stand straight up. These stems can grow to be about 20 to 35 centimeters tall. They often have a dark color, like reddish or purplish, and are covered in stiff white hairs.

Leaves and Flowers

The leaves of the Waldo rockcress grow in a circle around the base, forming a "rosette." These leaves are oval-shaped and green. They have a few coarse white hairs and can be up to 4 centimeters long. Their edges can be smooth or slightly wavy. Leaves higher up on the stem are usually smaller.

The flowers of this plant are quite pretty. They have dark purple sepals, which are like small leaves that protect the flower bud. The petals, which are the colorful parts of the flower, are a lighter shade of purple. After the flowers bloom, they produce a long, thin fruit. This fruit is called a silique and can grow up to 6.5 centimeters long, standing upright on the plant.