A Study of Nuts With Special Reference to Microscopic Identification
The book A Study of Nuts With Special Reference to Microscopic Identification was written by author William J Young Here you can read free online of A Study of Nuts With Special Reference to Microscopic Identification book, rate and share your impressions in comments. If you don't know what to write, just answer the question: Why is A Study of Nuts With Special Reference to Microscopic Identification a good or bad book?
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Stomata occur at intervals in the epidermal layer. They are char- acterized by thick reniform guard cells, quite regular in shape, almost always fitting together squarely at the ends. Stomata measure about 55 p in length by TO [i in breadth. The opening included by the guard cells is also broader than it is long and usually has a sym- metrical form. In a transverse section (see fig. 2, B) the outer tissue is seen to have a thickness of 60 to 80 n and to consist in general of 1 Colby. California... Walnuts, Almonds, and Chestnuts. California Agr. Exper. Sta. Bui. 113, p. 4. WALNUT. 17 one or two cell layers. The stomata are subtended by rather small respiratory cavities. The inner periderm layer is 20 pi or more thick and consists of compressed cells forming a parenchyma tissue which lacks distinctive character and in some places contains large vascular bundles. The endosperm comprises a rather thin layer, 16 to 40 pi thick, closely joined to the kernel. It usually consists of a single cell layer, which at intervals becomes thickened to two or three layers.
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