[Wikipedia] Taxonomy, Etymology: White fir was first collected by Augustus Fendler on his expedition to the Santa Fe area of New Mexico in 1846–1847. Fendler's patron George Engelmann, a St. Louis area physician and botanist, then described the plant.[13] This tree was first collected in California by William Lobb on his expedition to California of 1849–1853, after it was overlooked by David Douglas in his 1825–1827 expedition to the Pacific coast region.[14][15] The specific epithet concolor means "all one color". (link added by Mary Ann Machi)