Read e-book online Anatomy of Flowering Plants: An Introduction to Structure PDF

By Paula J. Rudall

ISBN-10: 0521692458

ISBN-13: 9780521692458

Within the 3rd variation of her profitable textbook, Paula Rudall presents a complete but succinct advent to the anatomy of flowering vegetation. completely revised and up-to-date all through, the booklet covers all features of comparative plant constitution and improvement, prepared in a sequence of chapters at the stem, root, leaf, flower, seed and fruit. inner constructions are defined utilizing magnification aids from the straightforward hand-lens to the electron microscope. quite a few references to fresh topical literature are integrated, and new illustrations replicate quite a lot of flowering plant species. The phylogenetic context of plant names has additionally been up-to-date because of better realizing of the relationships between flowering vegetation. This sincerely written textual content is perfect for college kids learning a variety of classes in botany and plant technological know-how, and can also be a good source for pro and novice horticulturists.

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2 Vicia faba (Fabaceae), transverse section of stem. Scale ¼ 100 mm. fibres and sclereids, and parenchyma cells frequently become lignified as the plant ages. Ridged or angled stems often possess strengthening collenchyma at the angles, immediately within the epidermis. Many stems are photosynthetic organs with a chlorenchymatous cortex, particularly in leafless (apophyllous) plants, which normally occur in nutrient-poor habitats. Some plant stems possess secretory cells or ducts in the ground tissue.

4 Root Epidermis and Hypodermis In root apices with closed organization, the root epidermis is associated either with cortical cells (in most monocots) or with cap initials (in most other angiosperms); in root apices with open organization the precise origin of the root epidermis is relatively difficult to determine21. In eudicots the root epidermis (rhizodermis) is typically uniseriate, as in other parts of the plant. In monocots the root epidermis is normally persistent and remains as the outermost layer of the root.

12), secondary growth does not fit the ‘‘normal’’ pattern of xylem and phloem production, and is termed anomalous secondary growth. g. in Avicennia) or in alternating concentric bands. 9 Alnus glutinosa (Betulaceae), wood, transverse section. Scale ¼ 100 mm. irregularly shaped73. Such anomalous forms are achieved either by the formation of new vascular cambia in unusual positions or by the unusual behaviour of the existing cambium in producing phloem instead of xylem at certain points. 7 Secondary Phloem Secondary phloem is also a product of the vascular cambium in woody species.

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Anatomy of Flowering Plants: An Introduction to Structure and Development by Paula J. Rudall

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