The natural history of plants, their forms, growth, reproduction, and distribution; . \ / \ \^uy . i\v:r- ^. Fig. 86.—Folding of Grass-leaves. 1 Vertical section through part of the open leaf of Stipa capillata; x240. 2 Vertical section through an entire open Vertical section through a closed leaf; x30. * Vertical section through a portion of the leaf of Festuca alpestris; Vertical section through an entire open leaf. * Vertical section through a closed leaf; x30. whose outer walls are much thickened. A vertical section through the leaf ofFestuca punctoria, a native of the Tau
The natural history of plants, their forms, growth, reproduction, and distribution; . \ / \ \^uy . i\v:r- ^. Fig. 86.—Folding of Grass-leaves. 1 Vertical section through part of the open leaf of Stipa capillata; x240. 2 Vertical section through an entire open Vertical section through a closed leaf; x30. * Vertical section through a portion of the leaf of Festuca alpestris; Vertical section through an entire open leaf. * Vertical section through a closed leaf; x30. whose outer walls are much thickened. A vertical section through the leaf ofFestuca punctoria, a native of the Taurus, is represented in fig. 88. In thisplant, the leaves, when open, present a fairly shallow depression; the under surfaceis clothed with a protective mantle of five layers of strong cells devoid of chloro-phyll; the ridges are rounded off and possess only a single layer of covering cells,provided with an extremely strong wax-like coat. The open leaves of Festuca Porcii, FORM AND POSITION OF THE TRANSPIRING LEAVES AND BRANCHES. 343 a native of the Carpathians, are relatively thin (see figs. 87 * and 87
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Keywords: ., bookcentury1900, bookdecade1900, booksubjectbotany, bookyear1902
