systematics

Turgeon, D. D., J. F. Quinn, Jr., A. E. Bogan, E. V. Coan, F. G. Hochberg, W. G. Lyons, P. M. Mikkelsen, R. J. Neves, C. F. E. Roper, G. Rosenberg, B. Roth, A. Scheltema, F. G. Thompson, M. Vecchione, and J. D. Williams. 1998. Common and scientific names

Rollins, R.C., and E.A. Shaw. 1973. The genus Lesquerella (Cruciferae) in North America. Harvard Univ. Press. Cambridge, MA. 288 pp.

• taxonomy
• systematics
• distribution map
• Lesquerella
• Cruciferae

Oldham, J.C. and H.M. Smith. 1991. The generic status of the smooth green snake, Opheodrys vernalis. Bull. Md. Herp. Soc. 27(4):201-215.

• systematics

Rollins, R.C. 1993a. The Cruciferae of continental North America: Systematics of the mustard family from the Arctic to Panama. Stanford Univ. Press, Stanford, California. 976 pp.

• taxonomy
• systematics
• Cruciferae
• distribution
• Brassicaceae

American Ornithologists' Union (AOU). 1957. The AOU check-list of North American birds, 5th ed. Port City Press, Inc., Baltimore, MD. 691 pp.

• taxonomy
• systematics

Needham, J.G. and M.J. Westfall, Jr. 1954. A Manual of the Dragonflies of North America (Anisoptera). University of California Press, Berkeley, California. 615 pp.

• morphology
• systematics
• taxonomy
• Crossosomataceae
• dragonfly

Hershler, R and J. J. Landye. 1988. Arizona Hydrobiidae (Prosobranchia: Rissoacea). Smithsonian contributions to zoology. Num. 459:1-63.

• systematics
• Rissoacea
• snail
• Gastropoda
• Hydrobiidae
• Prosobranchia