E-mail from Pat Holmgren, 10 April 1995. Middle name and date from the author. Death year from: Botanical Electronic News no. 471. 22 Aug 2013 (via Judith A. Warnement (A, AMES, F, GH))
Example of Name Published
Lithophragma affine A.Gray subsp. mixtum Roy L.Taylor Univ. Calif. Publ. Bot. 37: 57. 1965. Geum schofieldii Calder & Roy L.Taylor in Canad. Journ. Bot. 43: 1394. 1965