]> S. Y. Mathews [author note: UMO; A, GH, MONT; Phytochrome; Castilleja; Hemi-parasitic Scrophulariaceae; Seed Plant phylogeny; Poaceae [Mathews provided a portion of the data on 30 Jun 2000]] Botany Mathews, Sarah Youngberg Mathews, Sarah Youngberg S. Y. Mathews Sarah Younberg Mathews 1955