Smeathmannia 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

Genus Smeathmannia Sol. ex R.Br.

Figs 1E , 6E–L

Seed description

Seeds compressed, 4.6–5.2 mm long, 3.0– 3.7 mm wide and 1.6–1.8 mm thick, oblong. The surface is reticulate foveolate, with an average of 9.50 reticulations per mm 2. The reticulations have an average diameter of 236 µm and a depth of 121 µm. The margin is entire. The apex lacks prominent appendages. The base is obtuse, truncate, and has a mucro. The palisade seed coat is on average 155 µm thick.

Remark

The genus is represented by 7 species, 2 are studied here.

Figures

Fig. 1. Cross-sections of seeds from each genus. A. Androsiphonia adenostegia Stapf (P04772168). B. Barteria fistulosa Mast. (P04772344). C. Paropsia edulis Thouars (P04767996). D. Paropsiopsis decandra (Baill.) Sleumer (P04772112).E. Smeathmannia pubescens Sol. ex R.Br. (P04772722). F. Seed coat of Barteria fistulosa (P04772344). Scale bars: A = 1.5 mm; B–D = 1 mm; E = 0.8 mm; F = 1.1 mm.

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.