Figure 9 from: Wagner W, Clark J, Lorence D (2014) Revision of endemic Marquesas Islands Bidens (Asteraceae, Coreopsideae). PhytoKeys 38: 37-67. https://doi.org/10.3897/phytokeys.38.7609

Figure 9 - Bidens wichmanii W.L. Wagner, J.R. Clark & Lorence A Distal part of plant B Head showing rays and involucral bracts (outer series) C Head post-flowering showing involucral bract D Inner involucral bract E Ray corolla F–G Disk corolla H Disk corolla longitudinal section I Achene. Drawn from Wood 10140 (isotype, US) [A, C, I], and Perlman 10152 (US) [B, D–G, H].