Plant Material
Bignonia magnifica W. Bull, Bignoniaceae, is native to Central America and northern South America (Lohmann & Taylor, 2014). It belongs to the monophyletic tribe Bignonieae, which is predominantly composed of lianas that climb using terminal leaflet-modified tendrils. Bignonieae is the most diverse and abundant clade of lianas in neotropical lowland forests (Gentry, 1986). A synapomorphy of the tribe is the presence of four or multiples of four, equidistant phloem wedges formed by variant regions of the cambium, which are located more internally in the stem due to its reduced xylem production (Lohmann & Taylor, 2014; Paceet al. , 2015; Fig. 1c).