Phytocrene palmata Wall.

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 : 68

Phytocrene palmata Wall.

Fig. 22.19–22.26

Material examined

Specimen used for endocarp and fruit description

SUMATRA • 3 Apr. 1968; Jacobs 8155; L [ L.2289602] .

Description

FRUIT. Ovoid, slightly asymmetrical and elongate at the apex, yellow when mature. Epicarp with clusters of hairs. Mesocarp thin, but thicker in the accrescent part when dry. Calyx not persistent. Length 35– 55 mm, width 16–25 mm, thickness ca 13 mm.

ENDOCARP. Brown, ovoid in lateral view, lenticular in transverse section, length ca 29.3 mm, width ca 18 mm, thickness ca 13 mm. Keel surrounding the endocarp in the plane of symmetry. Apex slightly asymmetrical in lateral view; base rounded, symmetrical. Outer surface of the endocarp pitted and faintly ridged. Pits circular, occasionally elongate, thin, 0.3–0.8 mm in diameter, randomly arranged with ca 11–13 pits longitudinally and 8–11 pits transversally (ca 168–178 pits per face). Pits narrow and shortly rounded, without tubercles. Ridges rounded, limited to two laterals ridges, not branched, only present in the apical third to half of the endocarp length. The two lateral ridges reaching the apex at the location of the pore, with one on each face. Endocarp wall 594–627 µm thick excluding pits (300–400 µm thick including pits). Endocarp wall (excluding pits) with three cell layers: outermost layer with ca 14 rows of anticlinally oriented cells, cells 22.3–34.6 µm in length, followed by a layer with ca 5 rows of periclinally oriented cells, cells 15.8–22.9 µm in width; innermost layer with one row of periclinally oriented cells, cells ca 11 µm in width, lining the locule surface with inflated cells. Locule with rounded protuberances due to the thickening of the wall under the pits.