Temperature Regulation by the Inflorescence of Philodendron

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Science  15 Dec 1972:
Vol. 178, Issue 4066, pp. 1195-1197
DOI: 10.1126/science.178.4066.1195


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.