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<blockquote data-quote="Kirk Roth" data-source="post: 1934530" data-attributes="member: 85015"><p>It certainly is the case!! I believe you are thinking of plant varieties, which do not (necessarily) have a geographic component.</p><p></p><p>To illustrate with a popular example, <em>Cannabis sativa</em> has several subspecies, depending on the authority. <em>C. s. sativa</em> is the northern subspecies is the northern form, preferred for hemp rope, while <em>C. s. indica</em> is the southern subspecies... cherished for other purposes.</p><p></p><p><em>C. s. sativa</em> can be further subdivided into two varieties: <em>C. s. sativa </em>var. <em>sativa</em> may grow tall and has relatively low resin levels. <em>C. s. sativa</em> var. <em>spontanea</em> is shorter and bushier. I'll not get into all the varieties of <em>indica</em>! But these varieties, while having a strong genetic component, are not necessarily geographically divergent, although each may fare better in specific microhabitats. </p><p></p><p>But the point is that the botanical community has, for over a century, had a system for genetic but nongeographical variation - perhaps ornithologists should become more comfortable with this as well.</p><p></p><p>I feel that there is a good case for some biological species within the Red Crossbill complex, but at our current level of understanding and for those "taxa" that may not yet have achieved species definition, I feel that we are dealing with different "varieties" of crossbills, not subspecies.</p></blockquote><p></p>
[QUOTE="Kirk Roth, post: 1934530, member: 85015"] It certainly is the case!! I believe you are thinking of plant varieties, which do not (necessarily) have a geographic component. To illustrate with a popular example, [I]Cannabis sativa[/I] has several subspecies, depending on the authority. [I]C. s. sativa[/I] is the northern subspecies is the northern form, preferred for hemp rope, while [I]C. s. indica[/I] is the southern subspecies... cherished for other purposes. [I]C. s. sativa[/I] can be further subdivided into two varieties: [I]C. s. sativa [/I]var. [I]sativa[/I] may grow tall and has relatively low resin levels. [I]C. s. sativa[/I] var. [I]spontanea[/I] is shorter and bushier. I'll not get into all the varieties of [I]indica[/I]! But these varieties, while having a strong genetic component, are not necessarily geographically divergent, although each may fare better in specific microhabitats. But the point is that the botanical community has, for over a century, had a system for genetic but nongeographical variation - perhaps ornithologists should become more comfortable with this as well. I feel that there is a good case for some biological species within the Red Crossbill complex, but at our current level of understanding and for those "taxa" that may not yet have achieved species definition, I feel that we are dealing with different "varieties" of crossbills, not subspecies. [/QUOTE]
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