Richards , A. J. & Ibrahim , H. ( 1978 ) . Estimation of neighbourhood size in two populations of Primula veris . In The pollination of flowers by insects , ed . A. J. Richards , pp . 165–74 . Linnean Society Symposium Series 6.
Biological Journal of the Linnean Society, 58, 247–76. Hewitt, G. (2000). The genetic legacy of the Quaternary ice ages. Nature, 405,907–13. Heywood, V. H. (1976). Plant taxonomy, 2nd edn. Studies in Biology, No. 5. London: Arnold.
Coevolution of mutualism between ants and acacias in Central America. Evolution, 3, 249–75. Janzen, D. J. (1977). What are dandelions and aphids? American Naturalist, 111, 586–9. Janzen, D. H. (2001). Latent extinction: the living dead.
Plant Variation and Evolution
Considers how the study of variation in plants has developed over the last 300 years. Copyright © Libri GmbH. All rights reserved.