THE MICHIGAN BOTANIST
the change from unlobed through 6-lobed is a strong widening of the angle between the two sides of the lower one-third to one-half of the blade.
It should be interesting to determine whether character states similar to those
described here for southeastern Michigan occur as well in other parts of the wide
range of sassafras.
For their aid in studying these populations, I acknowledge with thanks
William Brodowich, Robert Masta, and Steven Kobylarz.
Barnes, B. V. & W. H. Wagner. 1981. Michigan Trees. University of Michigan Press, Ann Arbor.
Ferguson, D. C. in R. B. Dominick et al. (editors). 1972. The Moths of America North of Mexico,
fascicle 20.2B, Bombycoidea (in part), p. 236. E. W. Classey, England.
Gleason, H. A. & A. Cronquist. 1991. Manual of Vascular Plants of Northeastern United States and
Adjacent Canada. Edition 2. New York Botanical Garden. 910 pp.
Harlow, W. H., E. S. Harrar, J. W. Hardin, and F. M. White. 1991. Textbook of Dendrology. Edition
7. McGraw-Hill, New York. 501 pp.
Ilick, J. S. 1927. Common Trees of Michigan. American Tree Association, Washington, D.C. 108 pp.
Platt, R. 1953. A Pocket Guide to the Trees. Pocket Books, New York. 256 pp.
Smith, N. F. 1997. Trees of Michigan and the Upper Great Lakes. Edition 6. Thunder Bay Press,
Lansing, Michigan. 178 pp.
Taber, W. S. 1937. Delaware Trees. A Guide to the Identification of the Native Tree Species. Publication 6, Delaware State Forestry Department, Dover. 250 pp.
Tyler, H. A. 1975. The Swallowtail Butterflies of North America, p. 85. Naturegraph Publishers,
Voss, E. G. 1985. Michigan Flora. Part II. Dicots (Saururaceae-Cornaceae). Bulletin of the Cranbrook Institute of Science Number 59, and University of Michigan Herbarium, Ann Arbor. 724 pp.
Emanuel D. Rudolph's STUDIES IN THE HISTORY OF NORTH AMERICAN
BOTANY, with an appendix on the relationship between science and religion.
Ronald L. Stuckey and William R. Burk, editors. September, 2000. Sida Botanical Miscellany No. 19. (ISSN 0883-1475, paperback; ISBN 1-889878-05-7, paperback.) xxx + 376 pp. $45 (+$3.71 for Texas residents) + postage $4.50 for
first copy, $1.00 for each additional copy to the same address; postage outside
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Check or money order payable to BRIT Press; Visa, MasterCard, or purchase
order accepted: BRIT Press, 509 Pecan Street, Fort Worth, Texas 76102, USA.
This is a tribute and memorial to Emanuel D. Rudolph, just "Rudy" to the
thousands whose lives he touched during his long tenure in Botany at the Ohio
State University. It is richly illustrated with over 200 b/w and colored photographs. The color cover features hollyhocks, to honor Rudy's observation that
their introduction from Europe serves "to remind us of man's attempt to preserve
the familiarity of his surroundings."