. Minnesota plant diseases. Plant diseases. Minnesota Plant Diseases. 199 have already been mentioned as living in an unequal partner- ship with root fungi in which the green plants are the dominant partners. They are not however found as parasites on other green plants. Higher seed plants. A number of Minnesota species of the higher seed plants are known as true parasites on other leaf- green plants and a few of these are of economic importance. When a race of plants which was originally self supporting by. Fi G. 101—Twig of a witches'-broom of spruce, showing the parasitic plants of the mist
. Minnesota plant diseases. Plant diseases. Minnesota Plant Diseases. 199 have already been mentioned as living in an unequal partner- ship with root fungi in which the green plants are the dominant partners. They are not however found as parasites on other green plants. Higher seed plants. A number of Minnesota species of the higher seed plants are known as true parasites on other leaf- green plants and a few of these are of economic importance. When a race of plants which was originally self supporting by. Fi G. 101—Twig of a witches'-broom of spruce, showing the parasitic plants of the mistle- toe which cause the "brooming" of the branches. The mistletoes are seen as very small plants, scarcely larger than the spruce leaves; they are tipped with an egg- shaped body which is the fruit of the mistletoe and contains a single seed. (See also Figs. 24 and 25.) Photograph by the author. means of a leaf-green apparatus, enters upon a parasitic life, the leaf-green mechanism falls into disuse and may suffer reduction or may even entirely disappear. Hence we find in confirmed parasites of this group more or less of a bleaching of the para- site. They are often, therefore, yellowish in color and the leaves are reduced to mere scales or are wanting 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 Freeman, Edward Monroe, 1875-. Saint Paul, Minn.
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Keywords: ., bookcentury1900, bookdecade1900, booksubjectplantdi, bookyear1905
