You are not currently logged in.
Access your personal account or get JSTOR access through your library or other institution:
If You Use a Screen ReaderThis content is available through Read Online (Free) program, which relies on page scans. Since scans are not currently available to screen readers, please contact JSTOR User Support for access. We'll provide a PDF copy for your screen reader.
Evolution of Floral Display in the Orchid Brassavola nodosa
Douglas W. Schemske
Vol. 34, No. 3 (May, 1980), pp. 489-493
Published by: Society for the Study of Evolution
Stable URL: http://www.jstor.org/stable/2408218
Page Count: 5
Since scans are not currently available to screen readers, please contact JSTOR User Support for access. We'll provide a PDF copy for your screen reader.
Preview not available
Reproductive success, indexed by pollinaria removal and fruit production, increases dramatically with flowers per inflorescence in the pollinator-limited orchid, Brassavola nodosa. Many-flowered inflorescences are very rare in nature, despite their apparent selective advantage. I suggest low survivorship as the counter-selective force responsible for the dominance of one-flowered inflorescences (54% of population) which have the highest probability of total reproductive failure (78%) and fruiting failure (92%). That plants do not delay flower production until a more successful floral display can be produced illustrates the importance of tradeoffs in the evolution of life-history characteristics.
Evolution © 1980 Society for the Study of Evolution