The Anatomy and Morphology of the Leaves and Inflorescences of Welwitschia mirabilis . M. ]^es,del. E .WilsoHi Plate 17. Fig. 1.—Two bundles of an adult leat seen in transverse section. Between thebundles is a mucilage canal. (The phloem Is somewhat crushed andtherefore not satisfactorily represented.) x 78. (F, fibres; px, pro-toxylem ; p, phloem ; Tr, transfusion tissue ; A A, Anastomosingbundles; M, mucilage canal.) Fig. 2.—A small portion of a transverse section of the leaf X 116. For a descrip-tion of both these figures, see text, pp. 180-2. (A, B, C, three layers ofouter

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The Anatomy and Morphology of the Leaves and Inflorescences of Welwitschia mirabilis . M. ]^es,del. E .WilsoHi Plate 17. Fig. 1.—Two bundles of an adult leat seen in transverse section. Between thebundles is a mucilage canal. (The phloem Is somewhat crushed andtherefore not satisfactorily represented.) x 78. (F, fibres; px, pro-toxylem ; p, phloem ; Tr, transfusion tissue ; A A, Anastomosingbundles; M, mucilage canal.) Fig. 2.—A small portion of a transverse section of the leaf X 116. For a descrip-tion of both these figures, see text, pp. 180-2. (A, B, C, three layers ofouter wall of epidermal cell ; G, branched lignified fibre; F,sclerenchymatous fibres ; other letters as in fig. 3 (see text).) Fig. 3.—Stoma of adult foliage leaf, seen from below. The cuticularised portionsare represented black, while the thickened but uncuticularised area ismore faintly shaded. X 116. Fig. 4.—The upper portion of a leaf bundle in transverse section, A cap ofsclerenchymatous fibres (F) is seen above the bundle and a portion of thesheath of transfusion tissue (Tr) is shown. The protoxylera (pa;) is mu

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Keywords: ., bookcentury1900, bookdecade1910, booksubjectproceed, bookyear1911