. Comparative anatomy of the vegetative organs of the phanerogams and ferns;. Plant anatomy; Ferns. 178 SIEVE-TUBES. height. Usually this aggregation of slime is found at one end only of the member, and in that case, in Cucurbita according to Nageli, in ^ of the instances (taking the whole plant into consideration) it is at the upper end, that is, on the under surface of the sieve-plate. In very many cases numerous very small grains of starch are im- bedded in the slime, and especially in the terminal aggregations of it V â Briosi found these in the stems and leaf-stalks of 129 out of 146 spec
. Comparative anatomy of the vegetative organs of the phanerogams and ferns;. Plant anatomy; Ferns. 178 SIEVE-TUBES. height. Usually this aggregation of slime is found at one end only of the member, and in that case, in Cucurbita according to Nageli, in ^ of the instances (taking the whole plant into consideration) it is at the upper end, that is, on the under surface of the sieve-plate. In very many cases numerous very small grains of starch are im- bedded in the slime, and especially in the terminal aggregations of it V â Briosi found these in the stems and leaf-stalks of 129 out of 146 species investigated. At the sieve-plates the slimy contents are continuous through the pores from one member of the tube into the adjoining one. It may be seen, especially in callous plates, and â¢when coloured yellow with iodine, filling all the pores and demonstrating, like a natural injection, the open communication through them (Figs. 68, 74). Where however the size of the parts makes an exact investigation possible, it may be seen that it does not pass as a homogeneous mass equally from one member into 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 Bary, A. de (Anton), 1831-1888; Bower, F. O. (Frederick Orpen), 1855-1948; Scott, Dukinfield Henry, 1854-1934. Oxford, Clarendon Press
Size: 1093px × 2287px
Photo credit: © The Book Worm / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1800, bookdecad, booksubjectplantanatomy, bookyear1884
