Presents resemblances both to the wombats and the phalangers, but is nearer to the former than to the latter.
Their natural resemblances and differences are only to be expressed by disposing them as if they were branches springing from a common hypothetical centre.
Witches-brooms are the tufted bunches of twigs found on silver firs, birches and other trees, and often present resemblances to birds nests or clumps of mistletoe if only seen from a distance.
The resemblances consist, in fact, not so much in the existence of one general facies running through the regions, as is the case with the northern flora, but in the presence of peculiar types, such ai those belonging to the families Restiaceae, Proteaceae, Ericaceae Mutisiaceac and Rutaceae.
A geographical botany based on such resemblances is only in reality a study of adaptations.
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