Fig. 2.

Seedling of Trithuria submersa (SEM) with pericarp removed; all figures show the same individual seedling. (A) General view. (B) Portion of (A) to show sheathing structure. (C) View of sheathing structure from the side of the abscised operculum. (D, E) Seed coat and endosperm removed, viewed in (D) from the same angle as in (C), and in (E) from the side of attachment of the (removed) seed coat; the seed coat was attached in the space between the two arrowheads. Labels: cr, collar rhizoids; e, endosperm; fol, foliage leaf; rt, root; sc, seed coat; ss, sheathing structure. Scale bars: A = 1 mm; B = 200 µm; C − E = 300 µm.