Smeathmannia laevigata Sol. ex R.Br.

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 : 14-16

Smeathmannia laevigata Sol. ex R.Br.

Fig. 6E–H

Material examined

SENEGAL-GAMBIA • Sénégambie; 1837; Heudelot 655; P [ P 04772782]!.

Seed description

Seeds compressed, 4.7 mm long, 3.1 mm wide, and 1.6 mm thick, curved oblong. The reticulate-foveolate surface is yellow-brown, with 7.62 reticulations per mm 2. The reticulations have an average diameter of 245 µm and a depth of 108 µm. The margin is entire with a lateral fold. The reticulations bordering the margin are open laterally. The apex lacks prominent appendages. The base is obtuse and truncate, with a mucro. The palisade seed coat is 156 µm thick.

Figures

Fig. 6. Seeds of the genera Paropsiopsis Engl. and Smeathmannia R.Br. A–D. Paropsiopsis decandra (Baill.) Sleumer (T.J. Klaine 194; P04772112). E–H. Smeathmannia laevigata Sol. ex R.Br. (Heudelot 655; P04772782). I–L. Smeathmannia pubescens Sol. ex R.Br. (A.J.B. Chevalier 17306; P04772722).A, E, I. Face view. B, F, J. Side view. C, G, K. Second face view. D, H, L. Basal view. Scale bar = 5 mm. Arrow: mucro.