Closest relatives of Siphocampylus antonellii, based on molecular phylogeny of Lagomarsino et al. (2014). A Flower of Siphocampylus veteranus B Flower of Siphocampylus actinothrix C Flower of Siphocampylus elfriedii D Cross-section of main stem of S. veteranus, showing a much more robust habit than Siphocampylus antonellii, but similar wood structure. All photos taken in the field by L. Lagomarsino. A, DL. Lagomarsino et al. 388BL. Lagomarsino et al. 403CL. Lagomarsino et al. 387.