Antioch Dunes Evening-primrose

Antioch Dunes evening-primrose is an herbaceous perennial.

Antioch Dunes evening-primrose is an herbaceous perennial with a relatively short life span of between 5 to 7 years.

Antioch Dunes evening-primrose is associated with Antioch Dunes, a riverbank dune system that historically reached heights of more than 100 feet and may have stretched for miles along the San Joaquin River. With a few minor exceptions, Antioch Dunes evening-primrose can only be found at Antioch Dunes National Wildlife Refuge, the last remnants of the Antioch Dunes.

The plant grows to roughly 0.50 to 0.80 meters tall, and has fleshy roots and grey-green leaves covered with short, stiff hair. The leaves have lobes that tend to be divided halfway or more toward the central axis of the leaf that generally point back toward the base of the plant, similar to the structure structure
Something temporarily or permanently constructed, built, or placed; and constructed of natural or manufactured parts including, but not limited to, a building, shed, cabin, porch, bridge, walkway, stair steps, sign, landing, platform, dock, rack, fence, telecommunication device, antennae, fish cleaning table, satellite dish/mount, or well head.

Learn more about structure of a dandelion leaf. Technically, this leaf structure is referred to as runcinate-pinnatafid. The flower buds are roughly 2.0 to 2.5 centimeters long, and are oblong with rounded, grooved tips. The flowers are 6 to 8 centimeters in diameter and have four white or pink heart-shaped petals and prominent, yellow stamens.

The flowers are 6 to 8 centimeters in diameter and have four white or pink heart-shaped petals and prominent, yellow stamens.

Antioch Dunes evening-primrose (Oenothera deltoides spp. howellii) is a subspecies of birdcage primrose (Oenothera deltoides). Birdcage evening primrose is a member of the evening primrose family (Onagraceae) that occurs in suitable habitat in northwestern Mexico, the Baja Peninsula, and arid regions of the southwestern and interior western United States. The use of  the word birdcage in the common name highlights the dry seedpod structure structure
Something temporarily or permanently constructed, built, or placed; and constructed of natural or manufactured parts including, but not limited to, a building, shed, cabin, porch, bridge, walkway, stair steps, sign, landing, platform, dock, rack, fence, telecommunication device, antennae, fish cleaning table, satellite dish/mount, or well head.

Learn more about structure , which can resemble a birdcage in this group of species, generally referred to as the birdcage evening primroses in western North America.