PHYTOGRAPHIC LITERATURE
- Bocquet, G. 1959. The campylotropous ovule. Phytomorphology 9: 222-227.
- Bjornstad, I. N. 1970. Comparative embryology of Asparagoideae-Polygonateae, Liliaceae. Nytt Magasin for Botanikk 17(3-4): 169-207.
- Correll, D. S., and M. C. Johnston. 1971. Manual of the Vascular Plants of Texas. Texas Research Foundation. Renner.
- Cronquist. A. 1968. The Evolution and Classification of Flowering Plants. Houghton-Mifflin Company. Boston.
- Davis, P. H., and V. H. Heywood. 1963. Principles of Angiosperm Taxonomy. D. Van Nostrand, Inc. Princeton.
- Duke, J. A. 1969. On tropical tree seedlings 1. Seeds, seedlings, systems, and systematics. Annals Missouri Botanical Garden 56(2): 125-161.
- Faegri, K., and van der L. Pijl. 1966. The Principles of Pollination Ecology. Pergamon Press. New York.
- Featherly, H. I. 1954. Taxonomic Terminology of Higher Plants. Iowa State College Press. Ames.
- Fernald, M. L. 1950. Gray's Manual of Botany. 8th ed. American Book Company. New York.
- Gray, P. 1967. The Dictionary of Biological Sciences. Reinhold Publishing Corporation. New York.
- Halle, F. 1971. Architecture and growth of tropical trees exemplified by the Euphorbiaceae. Biotropica 3(1): 56-62.
- Hickey, L. J. 1973. Classification of the architecture of dicotyledonous leaves. American Journal of Botany 60(1): 17-33.
- Jackson, B. D. 1928. A Glossary of Botanic Terms, 4th ed. J. B. Lippincott Company. Philadelphia.
- Johnson, A. M. 1931. Taxonomy of the Flowering Plants. The Century Company. New York.
- Lawrence, G. H. M. 1951. Taxonomy of Vascular Plants. The MacMillan Company. New York.
- Leppik, E. E. 1957. A new system for classification of flower types. Taxon 6: 64-67.
- Leppik, E. E. 1961. Phyllotaxis, anthotaxis, and semataxis. Acta Biotheoretica 14: 1-28.
- Lindley, J. 1848. An Introduction to Botany, 4th ed. London.
- Martin, A. C. 1946. The comparative internal morphology of seeds. American Midland Naturalist 36: 513-660.
- Porter, D. M., R. W. Kiger, and J. E. Monahan. 1973. A guide for contributors to Flora North America, Part II: An outline and glossary of terms for morphological and habitat description (Provisional Edition). FNA Report 66. Department of Botany, Smithsonian Institution. Washington.
- Rickett, H. W. 1944. The classification of inflorescences. Botanical Review 10: 187-231.
- Stearn, W. T. 1966. Botanical Latin. Thomas Nelson and Sons Ltd. London.
- Swartz, D. 1971. Collegiate Dictionary of Botany. The Ronald Press Company. New York.
- Systematics Association Committee for Descriptive Terminology. 1960. I. Preliminary list of works relevant to Descriptive Biological Terminology. Taxon IX(8): 245-257.
- Systematics Association Committee for Descriptive Terminology. 1962. II. Terminology of simple symmetrical plane shapes. Taxon XI(5): 145-156, 245.
- Uphof, J. C. Th. 1938. Cleistogamic flowers. Botanical Review 4(1): 21-49.