1. Botanic survey of needles, California
2. Dunn, Gertrude L.: The Distribution of the Chenopodiaceae in Selected SouthernCalifornia Areas, With Special Reference to the Morphology and Physiology of Their Pollens, presented as partial fulfillment of the requirements for the Degree of Master of Science from the Botany Department of the University of Southern California, unpublished.
3. Plant Indicators;Clements,1920
4. Manual of the Flowering Plants of California;Jepson,1925