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Science 15 December 1972:
Vol. 178. no. 4066, pp. 1195 - 1197
DOI: 10.1126/science.178.4066.1195
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Articles

Temperature Regulation by the Inflorescence of Philodendron

Kenneth A. Nagy 1, Daniel K. Odell 1, and Roger S. Seymour 1

1 Department of Biology, University of California, Los Angeles 90024

The inflorescence of Philodendron selloum temporarily maintains a core temperature of 38° to 46°C, despite air temperatures ranging from 4° to 39°C, by means of a variable metabolic rate. The heat is produced primarily by small, sterile male flowers that are capable of consuming oxygen at rates approaching those of flying hummingbirds and sphinx moths.


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