. The structure and development of mosses and ferns (Archegoniatae). Plant morphology; Mosses; Ferns. 548 MOSSES AND FERNS CHAP. grow in length, projects in the form of a semi-circular ridge that grows rapidly and forms a sheath about the ligule and the base of the cotyledon (Fig. 317, v). The growth of this sheath is marginal, and continues until a deep cleft is formed. A num- ber of cells at the bottom of the latter between the sheath and the leaf base constitute the stem apex. As they differ in appear- ance in no wise from the neighbouring cells, it is quite impossible. Please note that the

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. The structure and development of mosses and ferns (Archegoniatae). Plant morphology; Mosses; Ferns. 548 MOSSES AND FERNS CHAP. grow in length, projects in the form of a semi-circular ridge that grows rapidly and forms a sheath about the ligule and the base of the cotyledon (Fig. 317, v). The growth of this sheath is marginal, and continues until a deep cleft is formed. A num- ber of cells at the bottom of the latter between the sheath and the leaf base constitute the stem apex. As they differ in appear- ance in no wise from the neighbouring cells, it is quite impossible. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Campbell, Douglas Houghton, 1859-1953. New York, The Macmillan Company;

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Keywords: ., bookauthorcampbelldouglashought, bookcentury1900, bookdecade1910