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COBALT AND NICKEL UPTAKE BY THE NYSSACEAE
Author(s) -
Brooks Robert R.,
McCleave Judith A.,
Schofield Eileen K.
Publication year - 1977
Publication title -
taxon
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.819
H-Index - 81
eISSN - 1996-8175
pISSN - 0040-0262
DOI - 10.2307/1220551
Subject(s) - cobalt , nickel , herbarium , botany , floristics , biology , chemistry , organic chemistry , taxon
Summary Herbarium specimens (375) of species of Nyssa, Camptotheca and Davidia were analyzed for cobalt and nickel. All species of Nyssa (4 from the United States and 2 from Southeast Asia) possessed a marked ability to accumulate cobalt not only in absolute terms but also relative to nickel. The mean cobalt contents of the species were sufficiently different to allow differentiation of many pairs of species. It was concluded that all species of Nyssa could be used for assessing the cobalt status of soils. Camptotheca acuminata showed a much lower uptake of cobalt than Nyssa species but this uptake was still considerably higher than in most other plants and strengthened the case for inclusion of Camptotheca in the Nyssaceae. Davidia involucrata showed no capability for accumulating cobalt to a level exceeding normal background for most vegetation: thus strengthening arguments that it should be excluded from the Nyssaceae.