@article {3828, title = {A revision of some North American species of Calamagostis}, journal = {Rhodora}, volume = {32}, year = {1930}, pages = {35-57}, keywords = {CLIFFORD REPRINT, POOIDEAE, species}, author = {Stebbins, G. L.} } @book {3829, title = {Variation and Evolution in Plants}, year = {1950}, pages = {643}, publisher = {Columbia University Press}, organization = {Columbia University Press}, address = {New York}, keywords = {EVOLUTION}, author = {Stebbins, G. L.} } @article {3830, title = {Cytogenetics and evolution in the grass family}, journal = {American Journal of Botany}, volume = {43}, year = {1956}, pages = {890-905}, keywords = {CLASSIFICATION, CR REF, EVOLUTION}, author = {Stebbins, G. L.} } @article {3831, title = {Taxonomy and evolution of genera, with special reference to the family Gramineae}, journal = {Evolution}, volume = {10}, year = {1956}, pages = {235-245}, keywords = {EVOLUTION, GENERA, GRAMINEAE, TAXONOMY}, author = {Stebbins, G. L.} } @book {3832, title = {Flowering Plants: Evolution above the Species Level}, year = {1974}, publisher = {Harvard University Press}, organization = {Harvard University Press}, address = {Cambridge}, keywords = {EVOLUTION, species}, author = {Stebbins, G. L.} } @article {3833, title = {Coevolution of grasses and herbivores}, journal = {Annals of the Missouri Botanical Garden}, volume = {68}, year = {1981}, pages = {75-86}, keywords = {CR REF, EVOLUTION, Grasses}, author = {Stebbins, G. L.} } @inbook {3834, title = {Major trends of evolution in the Poaceae and their possible significance}, booktitle = {Grasses and Grasslands. Systematics and Ecology}, year = {1982}, pages = {3-36}, publisher = {University of Oklahoma Press}, organization = {University of Oklahoma Press}, address = {Norman}, keywords = {ECOLOGY, EVOLUTION, Grasses, GRASSLANDS, POACEAE, SYSTEMATICS}, author = {Stebbins, G. L.}, editor = {Estes J.R. and Tyrl, R. J. and Brunken, J. N.} } @article {3836, title = {Species concepts: Semantics and actual situations}, journal = {Biology and Philosophy}, volume = {2}, year = {1987}, pages = {198-203}, keywords = {PHILOSOPHY, species, SPECIES CONCEPTS}, author = {Stebbins, G. L.} }