The document provides biographical information about botanists Samuel Bonsall Parish and William Fletcher Parish. The brothers were born in New Jersey in the 1830s/40s and fought in the Civil War before moving to California in the 1870s. In California, they owned a ranch in San Bernardino and collected plants as botanical collectors, describing many new species. The document discusses several plants they collected, including burrobush and Parry's nolina, providing descriptions and details.