L'anatomie et la morphologie des feuilles et des inflorescences de Welwitschia mirabilis . , Dia. II, A-C (a).Strasburger, 1872, p, 145. 2 B 3188 Mlle M. une StKES SUR L'ANATOMIE ET LA MORPHOLOGIE OP Les diagrammes mais voir dia. I, ^, et des figues. 17, 18, 18) de la plaque, entre-temps le portionsometimes médian meurt loin à la fois, est parfois prolongé d'un peu de distance, ou mayeven forment un plexus étendue, dans laquelle, cependant, mais peu de tissus lignifiés est trouvé la, ±±, JD , VJ y UX.), les deux faisceaux postérieur, ceux le plus proche de l'axe du cône, l'autre approche également(Dia. II, E, 2) ; ils ont chacun un petit b

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The Anatomy and Morphology of the Leaves and Inflorescences of Welwitschia mirabilis . , Dia. II, A—C (a).Strasburger, 1872, p, 145. 2 B 3 188 MISS M. a StKES ON THE ANATOMY AND MORPHOLOGY OP THE diagrams but see Dia. I, ^, and figs. 17, 18, Plate 18), meanwhile the median portionsometimes dies away at once, is sometimes prolonged for a little distance, or mayeven form an extended plexus, in which, however, but little lignified tissue is found la, ±±, JD , VJ y UX.), The two posterior bundles, those nearest to the cone axis, also approach each other(Dia. II, E, 2); they each give off a small bundle on their adjacent side and thesesmall bundles become connected with each other and with the larger portions byradial rows of thin-walled cells derived from a cambium. The two larger portions atODce divide again, one product of each division forming a staminal trace. Thus the twoposterior bundles divide each into three, the centre bundle of each trio passing out toa stamen, the two lateral ones remaining in the flower axis (see figs. 14 and 15, Plate 18, and Dia. II, G, L).. Dia. I.—Course of Bundles in Male Flower. S, trace supplying stamen. P, P, posterior pair of bundles {Le.^ those nearest main axis). X, X, two most prominent bundles of perinucellary ring (corresponding to X, X, in $ flower axis, Le, the bundles which supply the outer integument, and which arise, like these, from the posterior main pair.) q, additional bundle formed at branching of anterior bundles. (Compare with Dia. IX, 3, p. 197, of female flower. It will be seen that the course of the bundles is similar in both cases, the main difference being caused by the six bundles which supply the stamens, and which are as if inserted on to the bundle system in the male flower, each stamen trace arising from the points of forking of the main bundles.) This method of division is similar to that followed by the two main bundles of theflower. Each division may be compared to a dichasial sympodium, of which t

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