814 DR. MAXWELL T. MASTERS—A GENERAL 
characteristic of the plant, at some other period, that it is not to 
be wondered at that botanists, before they were cognizant of the 
actual history of the plant, considered these temporary stages of 
growth to be the marks of adistinct genus. The so-called genus 
Fig. 1. 
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Young plant of Cupressus, showing primordial and, at the tip of 
the left-hand shoot, adult foliage. 
Retinospora, for instance, was founded on plants exhibiting the 
characteristics of certain stages of growth of a few species of 
Cupressus of the section Chamecyparis, or of species of Juniperus 
