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. 2013 Oct 18;112(9):1705–1722. doi: 10.1093/aob/mct214

Fig. 2.

Fig. 2.

Metric measures (spur length and tube width) and landmarks (1–10) employed in morphometric analyses, shown in two representative taxa of morphological Types I (L. spartea; A, B) and III (L. onubensis; C, D). Photos show lateral (A, C) and ventral (B, D) views. Notice the broad tube in B and the narrow tube in D.