References

Bell, A.D. 1991. Plant Form: An illustrated guide to flowering plant morphology. Oxford University Press, Oxford.

Foster, A.S., and E. M. Gifford, Jr. 1988. Comparative Morphology of Vascular Plants. Third Edition. W.H. Freeman and Co., San Francisco.

Judd, W. S., C.S. Campbell, E.A.Kellogg, and P.F. Stevens. 1999. Plant Systematics A Phylogenetic Approach. Sinauer Associates, Inc., Sunderland.

Harris, J. G., and M. Woolf Harris. 1994. Plant Identification Terminology. Spring Lake Publishing, Spring Lake.

Raven, P. H., R. F. Evert, and S.E. Eichhorn. 1999. Biology of Plants. Sixth Edition. Worth Publishers, New York.

Steeves, T.A., and I.M. Sussex. 1989. Patterns in Plant Development. Second Edition. Cambridge University Press, Cambridge.