. Plant physiology. Plant physiology. Fig. 61.—Ectotrophic mycorhiza of the beech; a, humus particles; b, strands of fungus hyphae penetrating the soil. Fig. 62.—Endotrophio mycorhiza in epider- mal cells of the root of Andromeda polifolia, the root shown in cross-section. the root is covered with hyphae some of which branch out into the soil and attach themselves to particles of humus. In other cases the fungus hyphae are found within the cells of the root (endotrophio mycorhiza), as in the case of Andromeda polifolia (Fig. 62). Here the hyphae occur in the large cells of the root epidermis.
. Plant physiology. Plant physiology. Fig. 61.—Ectotrophic mycorhiza of the beech; a, humus particles; b, strands of fungus hyphae penetrating the soil. Fig. 62.—Endotrophio mycorhiza in epider- mal cells of the root of Andromeda polifolia, the root shown in cross-section. the root is covered with hyphae some of which branch out into the soil and attach themselves to particles of humus. In other cases the fungus hyphae are found within the cells of the root (endotrophio mycorhiza), as in the case of Andromeda polifolia (Fig. 62). Here the hyphae occur in the large cells of the root epidermis. Mycorhiza is of common occurrence, being found on the majority of vascular plants, not only trees, shrubs and herbs, but even mosses. Some plants cannot ' Kamienski, Fr., Die Vegetationsorgane der Monotropa hypopitys L. Vorliut. Mitth. Bot. Zeitg. 39: 4S7-461. 1881. > Frank, B., Ueber die auf Wurzelsymbiose beruhende Emahrung gewisser Baume durch unterirdische Pilze. Ber. Deutsoh. Bot. Ges. 3: 128-14S. 1885. • StaM, E., Der Sinn der Mycorhizenbildung. Ein vergleichend-biologische Studie. Jahrb. wias. Bot. 34: 539-668. 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 Palladin, Vladimir Ivanovich, 1859-1922; Livingston, Burton Edward, 1875-; Hopping, Aleita, 1890-. Philadelphia, P. Blakiston's Son & Co
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