Iodes africana Welw. ex Oliv.

Rio, Cédric Del, Stull, Gregory W. & Franceschi, Dario De, 2020, Survey of the fruits and endocarps of Icacinaceae (Lamiids, Icacinales), European Journal of Taxonomy 645, pp. 1-130 : 32-33

Iodes africana Welw. ex Oliv.

Fig. 12.1–12.9

Material examined

Specimen used for endocarp and fruit description

CENTRAL AFRICAN REPUBLIC • Oubangui , Boukoko; 20 Mar. 1948; R. P. Tisserant s.n.; P [MNHN- P-P03951984] .

GABON • 1904; R.P. Klaine 3505; P[ MNHN-P-P03951995 ] .

Other material

CAMEROON • 1969; J.J. Bos 5089; P[ MNHN-P-P03951958 ].

REPUBLIC OF THE CONGO • 1964; A. Bouquet 833; P[ MNHN-P-P03951922 ].

Description

FRUIT. Elliptical, laterally compressed, brown when mature. Epicarp puberulent with yellow simple hairs with granular ornamentation, reticulate when dry, revealing the underlying reticulum of endocarp ridges. Mesocarp ca 300 µm thick when dry. Length 11.2–15.0 mm, width 8.4–11.1 mm, thickness ca 6 mm.

ENDOCARP. Cream, elliptical in lateral view, lenticular in transverse section, length 10.8–11.7 mm, width 8.5–9.1 mm, thickness ca 4.5 mm. Keel surrounding the endocarp in the plane of symmetry, with the thicker margin containing a vascular bundle embedded within the endocarp wall. Apex asymmetrical in lateral view; base rounded, slightly flattened, symmetrical. Outer surface of the endocarp ridged with three main longitudinal ridges (up to eight counting small longitudinal ridges) more or less branched, all reaching the point of the base. Ridges rounded and thin, enclosing 21–25 longitudinal and polygonal areoles with small freely ending ridgelets, occasionally absent. Vasculature of the endocarp resting on the ridges and free in the mesocarp. Endocarp wall 154–171 µm thick excluding ridges (268–277 µm including ridges). Endocarp wall with three cell layers: outermost layer with ca 0–6 row(s) of isodiametric cell, cells 24–32 µm in diameter; followed by a layer with 5–10 rows of periclinally oriented cells, cells 9–13 µm in width; innermost layer with one row of periclinally oriented cells, cells ca 8.5 µm in width, covering the inner endocarp surface with regularly spaced and rounded papillae; papillae 14.3–17.4 µm (av. 16.1 µm) in diameter, ca 810–840 papillae per 0.25 mm 2. Locule surface lacunate.