FIELD OBSERVATION REPORT
By Mary Wilson
June 2019

Antelope Valley California Poppy Reserve

There are poppies still in bloom at the Poppy Reserve. They are not the vibrant poppy orange but turning a yellow color and without the green background of new plants they are harder to see. There were even a few poppy plants that had the buds with the calyx on them. It is now the time for the plants with the word “weed” in them to start growing. Have found ragweed, tumbleweed, camphorweed, horseweed and Turnkey mullein coming up but with no flowers. The plants with flowers are Jimson weed and mustard.

California Dodder (Cuscuta californica) is having a good year. Found a lot of plants on the east side of the valley—Barrel Springs Road up to Devil’s Bunch Bowl. This is a parasitic vine that climbs other plants and takes nutrition directly from them. It resembles a pile of yelloworange straw wrapped tightly around its host. It has leaves that are reduced to minute scales. After a dodder attaches itself to a plant, it wraps itself around it. If the host contains food beneficial it produces haustoria (root-like structures) that lets it insert itself into the vascular system of the host. They can also attach themselves to more than one plant to keep their hosts alive.

Arthur B. Ripley Desert Woodland

These interesting plants are now in bloom. They are part of the Agave Family (Agavaceae) and the name Yucca whipplei has changed to Hesperoyucca whipplei. It was named after Amiel Weeks Whipple (1818-1863), a surveyor who oversaw the Pacific Railroad Survey to Los Angeles in 1853. The name our Lord’s candle is derived from its large, flame-shaped inflorencence. This plant has hundreds of fragrant small white flowers displayed on top of 6-12 foot tall spikes. It is pollinated by the California yucca moth, a relationship known as symbiosis. It has sometimes been called Spanish Bayonets because of the very sharp needle-like pointed leaves that can pierce through flesh, much like a sword.


The plant will produce fruit and then a capsule containing numerous flat black seeds. Once the plant produces these fruit and seeds, it will die. New plants can grow from seeds but can also produce an offset which is a complete daughter plant that has been naturally and asexually produced on the mother plant. They are clones that are genetically identical to the mother plant. Archaeological evidence show that the use of the yucca species extends to approximately 5,000 years. Native Americans harvested the plants for food by roasting or boiling the spikes, boiling or eating the flowers raw, would eat the seeds raw or grind them into a paste and used parts of the plant for medicine. They would also use the leaves and pound them into fibers to make rope, cloth and sandals. The leaves could also be made into fishing line, used to bundle up supplies, make baskets, and house frames.