Evolution in the Rosaceae, especially subfamily Maloideae
An ongoing area of interest, shared with graduate students and
with colleagues elsewhere, has been the origin of subfamily Maloideae, and
evolution in the Rosaceae
Colloquium: Rosaceae phylogeny: Current knowledge, problems, and prospects
(Botany 2002, University of Wisconsin).
T. A. Dickinson, R. C. Evans, & C. S. Campbell. Rosaceae classification
and phylogeny: introduction and overview.
- R. C. Evans, L. A. Alice, C. S. Campbell, E. A. Kellogg
& T. A. Dickinson. "Multiple putative GBSSI loci in the Rosaceae: characterization
and potential phylogenetic utility." Molecular Phylogenetics & Evolution
17(3): 388-400 (2000).
- R. C. Evans
& T. A. Dickinson. 1999. "Floral ontogeny and morphology in subfamily
Amygdaloideae (Rosaceae). International Journal of Plant Sciences vol.
- R. C. Evans
& T. A. Dickinson. 1999. Floral ontogeny and morphology in subfamily Spiraeoideae
(Rosaceae). International Journal of Plant Sciences vol. 160(5): 981-1012.
[NOTE: R. C. Evans was awarded the Canadian Botanical Association's Taylor
A. Steeves Award in Plant Structure and Development for this paper at
the 2000 Annual Meeting of the CBA/ABC.]
- T. A. Dickinson & C. S. Campbell. "Symposium: Evolution
in the Maloideae (Rosaceae) - Introduction." Systematic Botany 16(2):
- C. S. Campbell, C. W. Greene & T. A. Dickinson. "Reproductive
Biology in Subf. Maloideae (Rosaceae)." Systematic Botany 16(2): 333-349
- T. A. Dickinson & C. S. Campbell. "Population structure
and reproductive ecology in the Maloideae (Rosaceae)." Systematic Botany
16(2): 350-362 (1991).
Interactive identification using DELTA databases
This work is being carried out in collaboration with other staff
of the ROM Vascular Plant Herbarium (TRT), staff of the University of Toronto
Library, and students in BOT
307F and BOT 1307H, BOT 299Y, and BOT 460Y, all of whom are involved in
developing or displaying taxonomic databases in the DELTA format. Some of
these databases have been posted on the PollyClave
site for WWW-based interactive plant identification, while others are still
in development, including:
- M. Shaik, T. A. Dickinson & J. R. Steadman. "Variation
in rust susceptibility in beans: predicting lesion size from leaf developmental
stage measured by leaf age, length, and plastochron index." Phytopathology
79(10): 1035-1042 (1989).
Forest ecology in Jamaica
- D. L. Kelly, E. V. J. Tanner, V. Kapos, T. A. Dickinson,
P. Fairbairn & G. Goodfriend. "Limestone forests of Jamaica: floristics,
structure and environment of three examples on a rainfall gradient." Journal
of Tropical Ecology, 4:121-156 (1988).
- D. L. Kelly & T. A. Dickinson. "Vernacular names
of trees and other plants in the John Crow Mountains of north-east Jamaica."
Economic Botany, 39(3): 346-362 (1985).
- T. A. Dickinson & E. V. J. Tanner. "Exploitation
of hollow trunks by tropical trees" (Note). Biotropica, 10(3): 231-233
bottom of the north slope of Hog House Hill, Portland Parish, Jamaica. ©
T. A. Dickinson 1986.
transect across the south slope of Hog House Hill, Portland Parish, Jamaica.
Click on the image to see a larger version (196K, 1040 x 740 pixels); both
images © T. A. Dickinson 1986. In the center of the upper portion,
the human figure standing on the limestone outcrop in the central portion
hollow trunk of Guarea swartzii split to show roots growing into
internal soil column from adjacent trees (Dickinson & Tanner 1978).
© T. A. Dickinson 1986.
Key to the
species in the transect diagram: Vertical hatching, Calophyllum calaba;
horizontal hatching, Omphalea triandra; dotted, Macrocnemum jamaicense.
Other species are identified by abbreviations of their genera (names as in Appendix
1 of Kelly et al. 1988).