Barteria nigritana Hook.f.

Lagrange, Flavien, Martínez, Camila & Rio, Cédric Del, 2024, Seed morphology of the paleotropical tribe Paropsieae (Passifloraceae, Malpighiales), and paleobotanical implications, European Journal of Taxonomy 943, pp. 1-23 : 9

Barteria nigritana Hook.f.

Fig. 3M–P

Material examined

GABON • Aug.–Sep. 1938; A. Walker s.n.; P [ P04772081 ] !.

Seed description

Seeds compressed, 4.7 mm long, 3.0 mm wide and 1.8–2.2 mm thick, curved oblong. The surface is coarsely reticulate and cream, with an average of 4.75 reticulations per mm 2. The reticulations have an average diameter of 634 µm and a depth of 159 µm. The margin is entire with a lateral fold. The apex lacks a prominent appendage. The base is acute and truncate, with a mucro. The palisade seed coat is 105 µm thick on average.

Figures

Fig. 3. Seeds of the genus Barteria Hook.f. A–D. Barteria dewevrei De Wild. & T.Durand (Guignonis 1938; P04772304) seed. E–H. Barteria dewevrei second seed. I–L. Barteria fistulosa Mast. (H. Jacques- Félix 4802; P04772344). M–P. Barteria nigritana Hook.f. (A. Walker s.n.; P04772081). A, E, I, M. Face view. B, F, J, N. Side view. C, G, K, O. Second face view. D, H, L, P. Basal view. Scale bar = 5 mm.