Pyrenacantha andapensis Labat, El-Achkar & R.Rabev.

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 : 72-74

Pyrenacantha andapensis Labat, El-Achkar & R.Rabev.

Fig. 24.1–24.9

Material examined

Specimen used for endocarp and fruit description

MADAGASCAR • 1994; D. Ravelonarivo et al. 72; P [ MNHN-P-P00440605 ].

Description

FRUIT. Elliptical to globose, accrescent at the apex, brown-orange when mature. Epicarp puberulent, with yellow small ovoid hairs with an acuminate apex and simple hairs with granular ornamentation, shriveled when dry. Mesocarp 620–1541 µm thick when dry. Calyx persistent, separated from the fruit by an extended gynophore. Length 20–26 mm, width 20–26 mm, thickness 17.4–26.0 mm.

ENDOCARP. Brown, globose in lateral view, globose in transverse section, length ca 19.9 mm, width ca 18.2 mm, thickness ca 14 mm. Trace of keel present in the upper part. Apex with acute protuberance, asymmetrical in lateral view; base rounded, symmetrical. Outer surface of the endocarp pitted. Pits circular, occasionally elongated longitudinally, 0.2–1.1 mm in length, randomly arranged with 10–11 pits longitudinally and 13–15 pits transversally (ca 159–173 pits per face). Pits associated with spiny tubercles protruding into the locule; tubercles ca 3–4 mm in length and 600–655 µm in diameter at the base, capitate at the apex, with 20–21 cells in width. Tubercle cells sclerotic, digitate and elongate. Endocarp wall 512–569 µm thick (excluding pits). Endocarp wall (excluding pits) with three cell layers: outermost layer with ca 7–8 rows of anticlinally oriented cells, cells 19.0– 29.9 µm in length, followed by a layer with 9–10 rows of isodiametric or occasionally periclinally oriented cells, cells 21.0– 33.5 µm in diameter; innermost layer with one row of isodiametric cells, cells 14–18 µm in diameter, lining the locule surface with regularly spaced and rounded papillae; papillae 9.7–17 µm (av. 13.9 µm) in diameter. Locule surface not lacunate.