Text-book of botany, morphological and physiological . rther growth of the guard-cells and of the epidermis-cells which surroundthem, different relative positions of the former to the surface may be brought about;the guard-cells may, when mature, lie in one plane with those of the epidermis, or maybe deeply pressed down and apparently belong to a deeper layer of cells; sometimesthey are on the contrary elevated above the surface of the epidermis. ^ Strasburger calls them special mother-cells. I think it, however, better entirely to abandonthis expression, the more so as its first introductitin
Text-book of botany, morphological and physiological . rther growth of the guard-cells and of the epidermis-cells which surroundthem, different relative positions of the former to the surface may be brought about;the guard-cells may, when mature, lie in one plane with those of the epidermis, or maybe deeply pressed down and apparently belong to a deeper layer of cells; sometimesthey are on the contrary elevated above the surface of the epidermis. ^ Strasburger calls them special mother-cells. I think it, however, better entirely to abandonthis expression, the more so as its first introductitin in the formation of pollen depended on anobsolete view of the formation of the cell-wall (compare our description, pp. 32, 33). 2 Strasburger, Jahrb. fiir wiss. Bot. VII, p. 393. THE EPIDERMAL TISSUE. 89 The stomata of Marchantia may shortly be mentioned here in connexion with whathas already been said on Fig. 65. After the formation of the air-cavities which arefilled with outgrowths containing chlorophyll, one cell of the epidermis lying above the.
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Keywords: ., bookcentury1800, bookdecade1870, booksubjectbotany, bookyear1875
