English: "Fig. 8.6. Cambial variants in which the cambium is or becomes separated into several segments. Four stages in development are shown for each species. Flabellaria has origin of xylem segments outside the original cylinder; these segments are expanded and dispersed by parenchyma proliferation. Serjania corrugata has a xylem cylinder consisting of arcs (in sectional view); the arcs are converted to cylinders. Serjania fuscifolia has cortical bundles; xylem is added to each of these and to the original cylinder." "(in Fig. 8.4) Conventions for this and other figures in this chapter: black phloem, blank (with circles indicating vessels) xylem; stippled axial parenchyma, vertical or variously diagonal lines in pairs rays."