Question: What are Borassodendron and Physaria?
Context: Lesquerolic acid is a hydroxy acid that occurs naturally in "Paysonia lasiocarpa" and other "Paysonia" and "Physaria" species.  It was first isolated in 1961 by a team from the Northern Regional Research Laboratory.  This compound has the at the alcohol-bearing stereocenter, and it is of the "Z" configuration at the olefin.  Lesquerolic acid is chemically similar to ricinoleic acid, but with two additional carbons at the carboxyl end of the carbon chain.  Lesquerolic acid, with other hydroxy fatty acids, has important industrial uses, including making resins, waxes, nylons and plastics. Borassodendron is a genus of flowering plant in the Arecaceae family. Physaria gordonii, commonly known as Gordon's bladderpod is a species of mustard plant distributed throughout the Southwestern United States and Northern Mexico.  It is a winter annual wildflower, maturing between April and June.  The plant normally grows in sandy or gravel deserts.  The plant has low-growing stems, with long, lanceolate leaves measuring about 4 in .  The plants flowers are in a loose, raceme cluster, and are radially symmetrical.  The plant is very similar to "P. fendleri". Physaria is a genus of flowering plants in the mustard family.  Many species are known generally as twinpods, bladderpods, or lesquerella.  They are native to the Americas, with many species endemic to western North America.  They are densely hairy annual and perennial herbs often growing prostrate or decumbent, along the ground in patches or clumps.  They bear inflorescences of bright yellow flowers.  The fruit is often notched deeply, dividing into twin sections, giving the genus its common name. Physaria filiformis (syn.  "Lesquerella filiformis") is a rare species of flowering plant in the mustard family known by the common names Missouri bladderpod and limestone glade bladderpod.  It is native to Missouri and Arkansas in the United States.  It was federally listed as an endangered species in 1987 and it was downlisted to threatened status in 2003. Physaria obcordata is a rare species of flowering plant in the mustard family known by the common name Dudley Bluffs twinpod.  It is similar in appearance to the more common Piceance twinpod, but can be distinguished by looking at the leaves through a hand lens.  The Piceance twinpod, "Physaria acutifolia" has stellate hairs when viewed through a hand lens while "Physaria ocordata" has markings that look like a satellite dish, or a circle with a dot in the middle.  It is endemic to Colorado, where it is found only in the Piceance Basin in Rio Blanco County.  It is threatened by the loss and degradation of its habitat.  It is a federally listed threatened species of the United States. Physaria repanda, commonly known as the Indian Canyon twinpod is a species of mustard plant distributed in Utah.  It is a perennial wildflower. Physaria tumulosa is a rare species of flowering plant in the mustard family known by the common name Kodachrome bladderpod.  It is endemic to Utah in the United States, where it is known only from Kane County.  There is only one known population of this plant made up of scattered occurrences totalling about 20,000 individuals, all within the Kodachrome Basin.  The plant is threatened by the loss and degradation of its habitat.  It is federally listed as an endangered species.  It was previously treated as a subspecies of "Physaria hitchcockii". Bladderpod oil is a seed oil, extracted from the seeds of the "Physaria fendleri" and other species of genus "Physaria", Native to the plains and mesas of southwestern United States, eastward to Kansas and southward into northern Mexico.  Bladderpod oil is rich in lesquerolic acid (C20:1-OH) which is a hydroxy acid.  The only commercial source of hydroxy acid is ricinoleic acid (C18:1-OH), found in castor oil.  Essentially all castor oil production in the U.S. has been eliminated by a combination of economic factors, excessive allergenic reactions of field and processing workers, and toxicity of the seed meal.  The fatty acid composition of bladderpod oil is: Borassodendron machadonis is a species of flowering plant in the Arecaceae family.  It is found in Peninsular Malaysia and Thailand.  It is threatened by habitat loss.
Answer: a genus of flowering plants