. Botany for high schools and colleges. Botany. asexual generation, provided. Fig. 272. Fig. 273. Fig. 272.—Plant of Marsilia Drummondii. K, apex of the stem; fo, b, leaves; /,/, /, the fruits springing from the petioles at X. One half natural size.—After Sachs. Fig. 273. — Longitudinal section tTirough three fruits (the fer- tile apices of awaver-leaf) of :-alvimanat(ins. i, i, two fruits containing inicrotporangia ; a, one with macrosporangia. x 10. —^After Sachs. with roots (ex- cept in Salvin- ia). The stem is horizontal, and floats upon the water or runs through the mud at the bottom of s
. Botany for high schools and colleges. Botany. asexual generation, provided. Fig. 272. Fig. 273. Fig. 272.—Plant of Marsilia Drummondii. K, apex of the stem; fo, b, leaves; /,/, /, the fruits springing from the petioles at X. One half natural size.—After Sachs. Fig. 273. — Longitudinal section tTirough three fruits (the fer- tile apices of awaver-leaf) of :-alvimanat(ins. i, i, two fruits containing inicrotporangia ; a, one with macrosporangia. x 10. —^After Sachs. with roots (ex- cept in Salvin- ia). The stem is horizontal, and floats upon the water or runs through the mud at the bottom of shal- low water. The leaves are cir- cinately devel- oped, and are simple or quad- rifid (Fig. 272). The stem and develop an apical which is root from cell, two or three-sided in the stem, and triangular in the root. The sporangia, which are usually of two kinds, are produced iu ••fruits" or receptacles, which are modified parts of leaves. Thes©. 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 Bessey, Charles Edwin, 1845- [from old catalog]. New York, H. Holt and company
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