1. Floral anatomy of Chrysothamnus (Astereae, Compositae);Anderson L. C.;Sida,1970
2. Hoyer's Solution as a Rapid Permanent Mounting Medium for Bryophytes
3. A revision of the genus Viguiera;Blake S. F.;Contr. Gray Herb. n. ser.,1918
4. A Reconstitution of the Genus Machaeranthera
5. A systematic study of the genus Astranthium (Compositae, Astereae);De Jong D. C. D.;Publ. Mus. Michigan State Univ. Biol. Ser.,1965