Iodes madagascariensis Baill.

Fig. 14.1–14.9

Material examined

Specimens used for endocarp and fruit description

MADAGASCAR • “ Côte orientale de Madagascar”; s.d.; Chapelier s.n.; P [MNHN-P-P04472113] • McPherson 18809; MO [MO-2972314].

Other material

MADAGASCAR • s.d.; Chapelier s.n.; P [MNHN-P-P04472112].

Description

FRUIT. Elliptical, brown when mature. Epicarp glabrous, granular, shriveled when dry, revealing the underlying reticulum of endocarp ridges. Mesocarp 135–214 µm thick when dry. Calyx not persistent. Length 7–9 mm, width 4–5 mm, thickness 4.4–5.0 mm.

ENDOCARP. Cream, elliptical in lateral view, lenticular in transverse section, length 7.6–8.0 mm, width ca 4.6 mm, thickness ca 4.3 mm. Keel surrounding the endocarp in the plane of symmetry, with the thicker margin containing the primary vascular bundle embedded within the endocarp wall. Apex slightly asymmetrical in lateral view, horn-like protrusions or pores absents; base rounded, symmetrical. Outer surface of the endocarp ridged delimiting a reticulate pattern of rounded ridges. Ridges thin and faintly apparent, with a median channel, enclosing more than 80 small polygonal areoles distributed over the entire surface of the endocarp. Vasculature of the endocarp resting in the channels of the ridges. Endocarp wall 165–201 µm thick excluding ridges (227–265 µm thick including ridges). Endocarp wall with at least two cell layers: outermost layer with ca 11 rows of periclinally oriented to isodiametric cells, cells 18.9–27.0 µm in width; innermost layer with one row of small periclinally oriented cells, cells 7.9–9.6 µm in width, covering the inner endocarp surface with regularly spaced and rounded papillae, papillae ca 13.3 µm in diameter. Locule not lacunate.