Photos of Bidens type specimens: A–C Bidens meyeri holotype (PTBG): A–B Specimen before mounting A Side with the involucral bracts and (mostly) upper surface of the leaves showing B Side with the flowers and (mostly) the undersurface of leaves showing C Holotype of Bidens meyeri, housed at PTBG D Holotype of Bidens saint-johniana, housed at BISH. [Photo credits: A–C by Jesse Adams, PTBG; D sent by BISH].