;"M.
                        zenkeri";"M.
                        filamentosa";"M.
                        bicornis"
"Outer petal length";"2.0–3.1 mm";"20–22 mm";"5–8 mm"
"Nr of stamen whorls";3–4;3–4;2
"Nr of stamens";35;34–46;15–18
"Nr of carpels";16;9–14;6–9
"Nr of ovules per carpel";4–5;7–10;3
"Flower bud";globose;"ovoid to lanceolate";rounded
"Pedicel length";"4–6 mm";"0–8 mm";"8–16 mm (Cameroon) 23–55 mm (Congo)"
"Indumentum on young branches";"densely covered with erect hairs 0.3–0.4 mm";"densely covered with erect hairs 1.2–2.0 mm";"densely covered with appressed hairs 0.1–0.2 mm"