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Astragalus brauntonii was described by Samuel Bonsall Parish in the Bulletin of the Southern California Academy of Sciences in 1903. It was first discovered by Herman Edward Hasse in 1899, who collected it in "sterile clay soil" in the Santa Monica Mountains. A later 1902 collection by Hasse served as the type specimen.
Of California's total plant population, 2,153 species, subspecies, and varieties are endemic and native to California alone, according to the 1993 Jepson Manual study. [4] This botanical diversity stems not only from the size of the state, but also its diverse topographies , climates, and soils (e.g. serpentine outcrops ).
The use of soil tests, coupled with the corresponding provisions, can alleviate issues of nutrition and irrigation that can result from non porous Ultisol. [4] Soil tests help indicate the pH, and red clay soil typically has a low pH. [5] The addition of lime is used to help to increase the pH in soil and can help increase the pH in Ultisol as ...
Clay soils like blue goo have the highest water-holding capacity when compared with other soils, giving them a low draining capacity. [3] This kind of habitat is unsuitable for most plants, [3] but the Northern California coastline maintains high levels of vegetation year round. Due to blue goo's clayey texture, it slips when overly saturated. [6]
It grows in sandy, clay, or serpentine soils, on grassy slopes and flats or open woodland, found in Baja California, California and Oregon. [2] Plantago erecta is a host species for the Edith's checkerspot butterfly. [3]
Which Southern California native plants survived climate change and mass extinctions 13,000 years ago and still live today? La Brea Tar Pits researchers compiled a list.