P. Barry Tomlinson, James W. Horn, and Jack B. Fisher
- Published in print:
- 2011
- Published Online:
- May 2015
- ISBN:
- 9780199558926
- eISBN:
- 9780191810077
- Item type:
- chapter
- Publisher:
- Oxford University Press
- DOI:
- 10.1093/acprof:osobl/9780199558926.003.0004
- Subject:
- Biology, Plant Sciences and Forestry
The palm leaf axis is a complex organ divided into three discrete and disparate regions: leaf sheath, petiole, and rachis, each with a different function — basal support, blade extension, and blade ...
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The palm leaf axis is a complex organ divided into three discrete and disparate regions: leaf sheath, petiole, and rachis, each with a different function — basal support, blade extension, and blade support, respectively. Although this leads to different anatomical features there is a structural continuity from one to the other because they are developmentally continuous as a unit and vascular bundles extend from one region to another. This chapter first discusses the palm petiole, covering surface layers, peripheral sclerenchyma, V-arrangement, vascular bundles, ground tissue, and transverse veins. It then examines the unique attributes of leaf morphology in palms as a consequence of their frequently massive construction and great diversity. It covers monocotyledons, open and closed leaf sheaths, and the palm leaf sheath.Less
The palm leaf axis is a complex organ divided into three discrete and disparate regions: leaf sheath, petiole, and rachis, each with a different function — basal support, blade extension, and blade support, respectively. Although this leads to different anatomical features there is a structural continuity from one to the other because they are developmentally continuous as a unit and vascular bundles extend from one region to another. This chapter first discusses the palm petiole, covering surface layers, peripheral sclerenchyma, V-arrangement, vascular bundles, ground tissue, and transverse veins. It then examines the unique attributes of leaf morphology in palms as a consequence of their frequently massive construction and great diversity. It covers monocotyledons, open and closed leaf sheaths, and the palm leaf sheath.
P. Barry Tomlinson, James W. Horn, and Jack B. Fisher
- Published in print:
- 2011
- Published Online:
- May 2015
- ISBN:
- 9780199558926
- eISBN:
- 9780191810077
- Item type:
- chapter
- Publisher:
- Oxford University Press
- DOI:
- 10.1093/acprof:osobl/9780199558926.003.0003
- Subject:
- Biology, Plant Sciences and Forestry
The palm leaf is a complex expression of diversity within a single organ, related to the primary function of photosynthesis. Complexity arises as a consequence of the frequent large size and ...
More
The palm leaf is a complex expression of diversity within a single organ, related to the primary function of photosynthesis. Complexity arises as a consequence of the frequent large size and longevity of palm leaves. The palm leaf also has an unusual method of blade development because an initially simple, undissected structure becomes compound. This chapter discusses the following: the basic construction the palm leaf, size and shape, petiole length, leaf sheath, and lamina anatomy (lamina symmetry, epidermis, cuticle and wax, trichomes, the stomatal complex, hypodermis, expansion cells, mesophyll, fibre bundles, vascular bundles and ribs, longitudinal veins, transverse veins, and ribs).Less
The palm leaf is a complex expression of diversity within a single organ, related to the primary function of photosynthesis. Complexity arises as a consequence of the frequent large size and longevity of palm leaves. The palm leaf also has an unusual method of blade development because an initially simple, undissected structure becomes compound. This chapter discusses the following: the basic construction the palm leaf, size and shape, petiole length, leaf sheath, and lamina anatomy (lamina symmetry, epidermis, cuticle and wax, trichomes, the stomatal complex, hypodermis, expansion cells, mesophyll, fibre bundles, vascular bundles and ribs, longitudinal veins, transverse veins, and ribs).
