Sedum pulchellum

A unique application of ionizing radiation to plant systematics was developed by McCormick and Rushing (1964) in which they studied three cytogenetic races of Sedum pulchellum, a succulent spring plant that appears on rock outcrops in the southeastern United States. Seeds were exposed to relatively high levels of radiation, and it was observed that in at least two of three experiments. 

McCormick, J. F., and W. N. Rushing. 1964. Differential radiation sensitivities of races of Sedum pulchellum Michx. A useful method of plant identification. Radiat. Bot. 4(3) 247-251. McEnery, M., and J. J. Lee. 1970. Tracer studies on calcium and strontium mineralization and mineral cycling in two species of foraminifera, Rosalina leei and Spiroloculina hyalirui. Limnol. Oceanogr. 15(2) 173-182. 

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See also in sourсe #XX -- [ ]

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