Alsodeiopsis zenkeri Engl.

Fig. 7.1–7.9

Material examined

Specimen used for endocarp and fruit description

CAMEROON • Ca 40 km S of Badjob, ca 50 km SW of Eséka; 18 Dec. 1963; W.J.J.O. de Wilde 1549; P[MNHN-P-P04495824].

Other material

CAMEROON • Ca 40 km S of Badjob, ca 50 km SW of Eséka; 18 Dec. 1963; W.J.J.O. de Wilde 1549; P[MNHN-P-P04495824] • Left bank of Sanaga River near ferry Nachtigal, ca 20 km N of Obala; alt. ca 400 m; galery forest; 11 Jun. 1964; W.J.J.O. de Wilde 2662b; P[MNHN-P-P04495825].

Description

FRUIT. Oblong, reticulate when dry, revealing the underlying reticulum of endocarp ridges. Mesocarp ca 70–80 µm thick when dry. Length 12.0– 17.3 mm, width 5–8 mm, thickness 2.0– 5.9 mm.

ENDOCARP. Cream, length ca 16 mm, width ca 7.2 mm, thickness ca 4.4 mm. Outer surface of the endocarp ridged, with ca three main longitudinal ridges, which span from the apex to the base of the endocarp. Ridges slightly angular and thin, delimiting a reticulate pattern, enclosing ca 50–60 polygonal areoles with more or less arbusclular freely ending ridgelets. Endocarp wall 102–157 µm thick excluding ridges (ca 186 µm thick including ridges). Endocarp primary vascular bundle in a channel on the keel. Endocarp wall with two layers: outermost layer with 10–11 rows of periclinally oriented cells, cells 9–15 µm in width; innermost layer with a single row of small periclinally oriented cells, cells ca 8–9 µm in width, inflated into the locule.