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Science 26 March 1971:
Vol. 171. no. 3977, pp. 1247 - 1248
DOI: 10.1126/science.171.3977.1247
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Articles

Disjunct Foliar Veins in Hawaiian Euphorbias

Derral Herbst 1

1 Botany Department, University of Hawaii, Honolulu 96822

Isolated segments of veins occur in the leaf mesophyll of several Hawaiian species of Euphorbia. These anomalous structures appear to consist entirely of tracheids and are a normal feature of the anatomy of species native to mesic and wet areas, but not to xeric, dry habitats.

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