Corythophora, , Huang, 2011

Huang, Ya-Yi, Mori, Scott A. & Kelly, Lawrence M., 2015, Toward a phylogenetic-based Generic Classification of Neotropical Lecythidaceae- I. Status of Bertholletia, Corythophora, Eschweilera and Lecythis, Phytotaxa 203 (2), pp. 85-121 : 105

Corythophora clade (100% BS; Fig. 2A , 10 )

This clade includes all four species of Corythophora recognized by Mori & Prance (1990). Species of Corythophora are restricted to Surinam, French Guiana, and central and eastern Amazonian Brazil ( Huang, 2010). Morphological synapomorphies of Corythophora include the presence of squamae on the surface of the inflorescence rachis (character 12, Fig. 3A ) and anther dimorphism (character 36). In addition, the species of Corythophora possess dorsiventrally thickened and closed androecial hoods (character 33; Fig. 10A, D, F, I ). Within the clade, the species are divided into two subclades ( Fig. 2A ): one with C. labriculata ( Eyma 1932: 75) S. A. Mori & Prance ( Mori 1981a: 365) and C. amapaensis Pires ex S. A. Mori & Prance ( Mori 1981a: 365) , and the other with C. alta R. Knuth (1939: 51) and C. rimosa Rodrigues (1974: 5) . The latter subclade differs from the former by the presence of ligular (character 32) instead of staminal ring antherodes, non-imbricate calyx-lobes, and a hypanthium and calyx-lobes that are not differentiated in texture and color. The monophyly of Corythophora in this study is congruent with previous studies ( Mori & Prance, 1990; Mori et al., 2007; and Huang et al., 2011).

Figures

FIGURE 2A. Strict consensus of 66 most parsimonious (MP) trees based on total evidence. Bootstrap values (>50%) are given above the branches.All clades in this figure are part of the Bertholletia clade. The Lecythis pisonis, L. ollaria, Bertholletia excelsa, L. poiteaui, and Corythophora clades of the Bertholletia clade are shown.

FIGURE 3A. One of 66 most parsimonious trees based on total evidence (L = 6134, CI = 0.35, RI = 0.76). Morphological characters are optimized onto the tree using the unambiguous option of Winclada. Supporting characters are shown on branches. White ellipses are homoplasious and black ellipses are non-homoplasious characters.All clades in this figure are part of the Bertholletia clade. The Lecythis pisonis, L. ollaria, Bertholletia excelsa, L. poiteaui, and Corythophora clades are shown.

FIGURE 10. The Corythophora clade. A–E. C. amapaensis (see Fig. 42 in Mori & Prance, 1990 for vouchers), F–L. C. alta (see Fig. 12 in Mori & Lepsch-Cunha, 1995 for vouchers) A. Apical view of flower. Note the closed androecial hood typical of all species in this clade. B. Inferior ovary with all but four calyx-lobes removed. Note that the calyx-lobes are strongly imbricate. C. Cross-section of 2-locular ovary. D. Medial section of an androecium with the androecial hood dorsiventrally thickened. E. Campanulate fruit base. F.Apical view of flower. G. Ovary, calyx, and style of a very young fruit. Note that the calyx-lobes are not imbricate. H. Cross-section of 2-locular ovary. I. Medial longitudinal section of androecium with dorsiventrally thickened hood. J. Cylindrical fruit. K. Operculum without a columella. L. Seeds with basal arils. The seeds of this clade are oblong to fusiform. Drawings A–E by B. Angell and F–L by A. Tangerini.