Oxalis megalorrhiza, JACq.

Romero, Giovanna E., 2022, Stem and caudex anatomy of succulent plant species, Adansonia (3) 44 (10), pp. 81-90 : 87

OXALIS MEGALORRHIZAJACq.

Stem cortex has scattered amyloplasts and ubiquitously tannins are found. Wood is parenchymatous. Axial matrix is formed by vessels, some paratracheal parenchyma cells, few fibers and tannins ( Fig. 3F ). Rays are multiseriate. Secondary phloem is collapsed. Pith has a star-shape, it has abundant tannins, amyloplasts and few druses.

Figures

FIG. 3. — Transverse sections of stems and caudices: A, B, Pelargonium carnosum (L.) L’Hér.; A, stem, wood; B, stem, bands of libriform fibers; C-E, Moringa drouhardii Jum.; C, stem, diffused fibrous wood, lignification in ray parenchyma cells; D, stem, radial section; E, stem, secondary phloem dilatated; F, Oxalis megalorrhiza Jacq., stem, wood; G-I, Adenia glauca Schinz; G, green stem, cortex and phloem fiber caps; H, green stem, parenchymatous wood; I, caudex, parenchymatous wood. Abbreviations: lf, libriform fibers; r, rays; p, parenchyma cells; fp, fiber cap; sp, secondary phloem. Scale bars: 50 µm.