Abstract

Although it has been against my idea of useful taxonomic procedure to name subspecific categories, in this genus a few subspecific names seem necessary to call attention to the relations existing in the extremely variable western species. What the subspecific divisions should be called is a matter of opinion. They are generally characteristic of geographic areas in my series, but they crop out far from these centers in small numbers. Until more can be known of the reason for this apparently sporadic occurrence, the noncommittal word form seems best to designate them.

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