Moringa drouhardii, JUM.

Romero, Giovanna E., 2022, Stem and caudex anatomy of succulent plant species, Adansonia (3) 44 (10), pp. 81-90 : 86

MORINGA DROUHARDII JUM.

Stem cortex has chloroplasts, druses and few idioblastic secretory cells. Wood is diffuse fibrous. The axial matrix consists principally of vessels, low secondary cell wall lignification libriform fibers, bands of interspaced scattered septate fibers and bands of axial parenchyma cells. Axial parenchyma can be confused with low lignification libriform and septate fibers ( Fig. 3C, D ). Rays are uniseriate and certain degree of lignification occurs in ray parenchyma cells where vessels meet them. Axial secondary phloem has only a few rows of functional phloem. Rays of secondary phloem are uniseriate close to the cambium; farther from it, parenchyma rays are dilatated ( Fig. 3E ). Pith has two ducts lined with epithelium and druses are present.

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.