Pyrenacantha kaurabassana Baill., 1584

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 : 82

Pyrenacantha kaurabassana Baill.

Fig. 26.10–26.18

Material examined

Specimen used for endocarp and fruit description

MOZAMBIQUE • 1933; A. Gomes e Sousa 1584; P [ MNHN-P-P04495513 ].

Other material

AFRICA • “ Côte orientale d’Afrique ”; Nov. 1888; R. P. Sacleux 787; P [MNHN-P-P04495512] • “Cap”; s.d.; Orège ? s.n.; P [MNHN-P-P04495509] .

Description

FRUIT. Elliptical, accrescent at the apex. Epicarp strigose, with yellow simple hairs with granular ornamentation. Mesocarp 200–260 µm thick when dry. Calyx persistent, separated from the fruit by an elongated gynophore. Length 13–20 mm, width 8.0– 9.2 mm, thickness 5–7 mm.

ENDOCARP. Cream, elliptical in lateral view, lenticular in transverse section, length ca 14.4 mm, width ca 8.2 mm, thickness ca 6 mm. Keel surrounding the endocarp in the plane of symmetry. Apex with acute protuberance, asymmetrical in lateral view; base rounded, symmetrical. Outer surface of the endocarp pitted and ridged. Pits exclusively circular, 0.2–0.3 mm in diameter, more or less longitudinally arranged with 14–18 pits longitudinally and ca 10 pits transversally (ca 170–184 pits per face). Pits associated with peg-shaped tubercles protruding into the locule; tubercles ca 658–700 µm in length and 267– 326 µm in diameter at the base. Ridges sharp and thin, delimiting a dense reticulum enclosing all pits in an areole. Endocarp wall 427–469 µm thick (excluding pits). Endocarp wall (excluding pits) with three cell layers: outermost layer with 1–2 rows of isodiametric cells, cells 8.0– 12.6 µm in diameter, followed by a layer with 11–12 rows of periclinally oriented cells, cells 15.0– 44.3 µm in width; innermost layer with one row of periclinally oriented cells, cells 8.9–12.2 µm in width, lining the locule surface with regularly spaced and rounded papillae; papillae 12.3–27.8 µm (av. 21 µm) in diameter. Locule surface not lacunate.