Mappia Jacq.

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 : 50

Genus Mappia Jacq.

Figs 17.10–17.26, 18.1–18.8

Description

FRUIT. Elliptical to globose, laterally compressed, red when mature. Epicarp glabrous.

ENDOCARP. Cream, elliptical to globose in lateral view, lenticular in transverse section. Keel surrounding the endocarp in the plane of symmetry. Apex asymmetrical in lateral view; base symmetrical. Outer surface of the endocarp rugose, almost smooth. Vasculature of the endocarp generally resting between rugosities. Endocarp primary vascular bundle outside the endocarp wall. Endocarp wall with two layers, including layer with rows of periclinally oriented cells and another with rows of anticlinally oriented cells. Locule surface smooth, sometimes slightly lacunate.

Key to the genus Mappia

1. Endocarp surface quite smooth ......................................................................................................... 2

– Endocarp surface rugose with channels and mounds ...................................... M. multiflora Lundell

2. Endocarp elliptical, without clear ridges .............................................................. M. racemosa Jacq.

– Endocarp globose, short ridge at the apex .......................................................... M. longipes Lundell