. Botany for high schools. Botany. Fig. 97. Rust of carnation stems and leaves caused by a parasitic fungus (Uromyces caryophyllinus). absorption of food substance takes place either directly by the threads of the fungus, or the threads de- velop specialized short branches, simple or branched, which penetrate the cell walls and lie in the proto- plasm of the host cell. These special branches are the haustoria. They absorb food substances which flow to the threads of mycelium* where they supply material for its continued growth and later for the development of the reproductive bodies. Some of t
. Botany for high schools. Botany. Fig. 97. Rust of carnation stems and leaves caused by a parasitic fungus (Uromyces caryophyllinus). absorption of food substance takes place either directly by the threads of the fungus, or the threads de- velop specialized short branches, simple or branched, which penetrate the cell walls and lie in the proto- plasm of the host cell. These special branches are the haustoria. They absorb food substances which flow to the threads of mycelium* where they supply material for its continued growth and later for the development of the reproductive bodies. Some of these fungus parasites often deform their host, stimulating the tissues to the * Mycelium is the special name of the fungus Fig. 98. Cells from the stem of a rusted carna- tion, showing the intercellular mycelium and haustoria. Object magnified 30 times more than the 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 Atkinson, George Francis, 1854-1918. New York, H. Holt and Company
Size: 1873px × 1335px
Photo credit: © Library Book Collection / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1900, bookdecade1910, booksubjectbotany, bookyear1910
