Aizen, M.O. (1993). Self-pollination shortens flower lifetime in Portulaca umbraticola H.B.K. (Portulacaceae).

International Journal of Plant Sciences 154, 412-415. Ashman, T.-L., and Schoen, D.J. (1994). How long should flowers live? Nature 788-791. Ashman, T.-L., and Schoen, D.J. (1996a). Ashman and Schoen reply (to 'Flower life span and disease risk',

Shykoff et al., van Doorn). Nature 379, 780. Ashman, T.-L., and Schoen, D.J. (1996b). Floral longevity: fitness consequences and resource costs. In Floral Biology: Studies on Floral Evolution in Animal-Pollinated Plants (D.G. Lloyd and S.C.H. Barrett, Eds.), pp. 112-139. Chapman and Hall, New York.

Ashman, T.-L., and Schoen, D.J. (1997). The cost of floral longevity in Clarkia tembloriensis—an experimental investigation. Evolutionary Ecology 11, 289-300.

Ashman, T.-L., and Stanton, M.L. (1991). Seasonal variation in pollination dynamics of the sexually dimorphic species, Sidalcea oregana ssp. spicata (Malvaceae). Ecology 72, 993-1003.

Bell, S.A., and Cresswell, J.E. (1998). The phenology of gender in homogamous flowers—temporal change in the residual sex function of flowers of oil-seed rape (Brassica napus). Functional Ecology 12, 298-306.

Charnov, E.L. (1982). The Theory of Sex Allocation. Princeton University Press, Princeton, NJ.

Charnov, E.L. (1996). Optimal flower lifetimes. Evolutionary Ecology 10, 245-248.

Clayton, S., and Aizen, M.O. (1996). Effects of pollinia removal and insertion on flower longevity in Choraea alpina (Orchidaceae). Evolutionary Ecology 10, 653-660.

Coorts, G.D. (1975). Internal metabolic changes in cut flowers. HortScience 8, 195-198.

Cunningham, S.A. (1995). Ecological constraints on fruit initiation by Calyptrogyne ghiesbreghtiana (Arecaceae): Floral herbivory, pollen availability, and visitation by pollinating bats. American Journal of Botany 82, 15271536.

Delph, L.F., and Lively, C.M. (1992). Pollinator visitation, floral display, and nectar production of the sexual morphs of a gynodioecious shrub. Oikos 63, 161-170.

Devlin, B., and Stephenson, A.G. (1984). Factors that influence the duration of the staminate and pistillate phases of Lobelia cardinalis flowers. Botanical Gazette 145, 323-328.

Dobkin, D.S. (1987). Synchronous flower abscission in plants pollinated by hermit hummingbirds and the evolution of one-day flowers. Biotropica 19, 90-93.

Edwards, J., and Jordan, R.J. (1992). Reversible anther opening in Liliumphilidelphicum (Liliaceae): a possible means for enhancing male fitness. American Journal of Botany 79, 144-148.

English-Loeb, G.M., and Karban, R. (1992). Consequences of variation in flowering phenology for seed head herbivory and reproductive success in Erigeron glaucus (Compositse). Oecologia 89, 588-595.

Galen, C., Sherry, R.A., and Carroll, A.B. (1999). Are flowers physiological sinks or faucets? Costs and correlates of water use by flowers of Polemonium viscosum. Oecologia 118, 461-470.

Gori, D.F. (1983). Post-pollination phenomena and adaptive floral changes. In Handbook of Experimental Pollination Biology (C.E. Jones and R.J. Little, Eds.), pp. 31-49. Van Nostrand Reinhold, New York.

Harder, L.D., and Barrett, S.C.H. (1992). The energy cost of bee pollination for Pontederia cordata (Pontederiaceae). Functional Ecology 6, 226-233.

Harding, J., Byrne, T., and Nelson, R.L. (1981). Heritability of cut-flower vase longevity in gerbera. Euphytica 30, 653-657.

Kerner von Marilaun, A. (1895). The Natural History of Plants, Their Forms, Growth and Reproduction, and Distribution. Henry Holt, New York.

Kunin, W.E., andShmida, A. (1997). Plant reproductive traits as a function of local, regional, and global abundance. Conservation Biology 11, 183-192.

Motten, A.F. (1986). Pollination ecology of the spring wildflower community of a temperate deciduous forest. Ecological Monographs 56, 21-42.

Nobel, P.S. (1977). Water relations of flowering in Agave deserti. Botanical Gazette 138, 1-6.

Panavas, T., Reid, P.D., and Rubinstein, B. (1998a). Programmed cell death of daylily petal: activities of wall-based enzymes and effects of heat shock. Plant Physiology and Biochemistry 36, 379-388.

Panavas, T., Walker, E.L., and Rubinstein, B. (1998b). Possible involvement of abscisic acid in senescence of daylily petals. Journal of Experimental Botany 49, 1987-1997.

Primack, R.B. (1985). Longevity of individual flowers. Annual Review of Systematics and Ecology 16, 15-37.

Proctor, H.C., and Harder, L.D. (1995). Effect of pollination success on floral longevity in the orchid Calypso bulbosa (Orchidaceae). American Journal of Botany 82, 1131-1136.

Pyke, G.H. (1991). What does it cost a plant to produce floral nectar? Nature 350, 58-59.

Richardson, T.E., and Stephenson, A.G. (1989). Pollen removal and pollen deposition affect the duration of the staminate and pistillate phases in Campanula rapunculoides. American Journal of Botany 76, 532-538.

Schoen, D.J., and Ashman, T.-L. (1995). The evolution of floral longevity: a resource allocation to maintenance versus construction of repeated structures in modular organisms. Evolution 49, 131-139.

Scott, D., Boyle, T.H., and Han, S.S. (1994). Floral development and flower longevity in Rhipsalidopsis and Schlumbergera (Cactaceae). HorScience 29, 898-900.

Seres, A., and Ramirez, N. (1995). Biologia floral y polinizacion de algunas monocotiledoneas de un bosque nublado Venezolano. Annals of the Missouri Botanical Garden 82, 61-81.

Shykoff, J.A., Buchell, E., and Kaitz, O. (1996). Flower lifespan and disease risk. Nature 379, 779.

Snow, A.A., Spira, T.P., Simpson, R., and Klips, R.A. (1996). The ecology of geitonotgamous pollination. In Floral Biology: Studies on Floral Evolution in Animal-Pollinated Plants (D.G. Lloyd and S.C.H. Barrett, Eds.), pp. 191-216. Chapman and Hall, New York.

Southwick, E.E. (1984). Photosynthate allocation to floral nectar: a neglected energy investment. Ecology 65, 1775-1779.

Stead, A.D. (1992). Pollination-induced flower senescence: a review. Plant Growth Regulation 11, 13-20.

Stearns, S.C. (1992). The Evolution of Life Histories. Oxford University Press, Oxford.

Stiles, F.G. (1975). Ecology, flowering phenology, and humming bird pollination of some Costa Rican Heliconia species. Ecology 56, 285-301.

Stratton, D.A. (1989). Longevity of individual flowers in a Costa Rican cloud forest: Ecological correlates and phylogenetic constraints. Biotropica 21, 308-318.

van der Meulen-Muisers, J.J.M., van Oeveren, J.C., and van Tuyl, J.M. (1998). Genotypic variation in postharvest flower longevity of Asiatic hybrid lilies. Journal of the American Horticulture Society 123, 283-287.

Van Doorn, W.G. (1997). Effects of pollination on floral attraction and longevity. Journal of Experimental Botany 48, 1615-1622.

Van Eijk, J.P., and Eikelboom,W. (1976). Possibilities of selection for keeping quality in tulip breeding. Euphytica 25, 353-359.

Webb, C.J., and Littleton, J. (1987). Flower longevity and protandry in two species of Gentiana (Gentianaceae). Annals of the Missouri Botanical Garden 74, 51-57.

Weiss, M.R. (1991). Floral colour changes as cues to pollinators. Nature 354, 221-223.

Zimmerman, M., and Pyke, G.H. (1986). Reproduction in Polemonium: patterns and implications of floral nectar production and standing crops. American Journal of Botany 73, 1405-1415.

How To Add Ten Years To Your Life

How To Add Ten Years To Your Life

When over eighty years of age, the poet Bryant said that he had added more than ten years to his life by taking a simple exercise while dressing in the morning. Those who knew Bryant and the facts of his life never doubted the truth of this statement.

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