Viola tomentosa
Encyclopedia
Viola tomentosa is a species of violet known by the common names feltleaf violet and woolly violet. It is endemic to the central Sierra Nevada of California
California
California is a state located on the West Coast of the United States. It is by far the most populous U.S. state, and the third-largest by land area...

, where it occurs in various types of dry mountain forest habitat. This small herb grows from a deep taproot
Taproot
A taproot is an enlarged, somewhat straight to tapering plant root that grows vertically downward. It forms a center from which other roots sprout laterally.Plants with taproots are difficult to transplant...

, reaching a maximum height of 5 to 10 centimeters. The herbage is coated with woolly hairs. The leaves have oval blades borne on petioles
Petiole (botany)
In botany, the petiole is the stalk attaching the leaf blade to the stem. The petiole usually has the same internal structure as the stem. Outgrowths appearing on each side of the petiole are called stipules. Leaves lacking a petiole are called sessile, or clasping when they partly surround the...

a few centimeters long. A solitary flower is borne on a short upright stem. It is under a centimeter long with five yellow petals. The lower three petals are veined with dark brown and the upper two are stained brown or purplish on the back sides.

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