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Science 1 December 1967:
Vol. 158. no. 3805, pp. 1195 - 1197
DOI: 10.1126/science.158.3805.1195
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Articles

Habitat Selection by Chemically Differentiated Races of Lichens

William Louis Culberson 1 and Chicita F. Culberson 1

1 Department of Botany, Duke University, Durham, North Carolina 27706

The maritime European lichens of the aggregate species Ramalina siliquosa represent six chemical races. Where the races are sympatric they populate different habitats. Such intensive local ecological sorting of morphologically similar individuals accumulating different, highly specialized metabolic end products appears to be unknown in other plants.

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Science. ISSN 0036-8075 (print), 1095-9203 (online)