Abstract
IT is now generally believed that some of the varying forms assumed by individual plants or animals in the course of their development are as it were the reflex of an ancestral state of things. From this point of view the different forms of leaves assumed by some Araucarias, as well as by many other conifers, become of particular importance. The Retinosporas now so common in our gardens and on our balconies represent an immature stage of some Thuya, the proof of which statement is occasionally furnished by the plants which suddenly assume the foliage characteristic of that genus. In various species of juniper, notably in the Chinese juniper, two forms of leaf representing the juvenile and the adult condition occur together on the same branch.
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MASTERS, M. Dimorphic Leaves of Conifers. Nature 23, 267 (1881). https://doi.org/10.1038/023267c0
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DOI: https://doi.org/10.1038/023267c0
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