. Botany of the living plant. Botany. VEGETATIVE PROl'AOATloN 2HJ repens), and the Common Horsetail (Equisetum arveuse) are cases in point. Any node serves to provide new ImkIs ; and as the long under- ground rhizomes are broken up in preparing the soil, this does not eliminate, but tends to spread the weed. It thus appears that vege- tative extension and propa- gation of the individual is a very wide-spread feature, both in Flowering Plants and in those lower in the scale. It is effective in wild life, as well as under the hand of the gardener. A very consider- able proportion of the per- enn
. Botany of the living plant. Botany. VEGETATIVE PROl'AOATloN 2HJ repens), and the Common Horsetail (Equisetum arveuse) are cases in point. Any node serves to provide new ImkIs ; and as the long under- ground rhizomes are broken up in preparing the soil, this does not eliminate, but tends to spread the weed. It thus appears that vege- tative extension and propa- gation of the individual is a very wide-spread feature, both in Flowering Plants and in those lower in the scale. It is effective in wild life, as well as under the hand of the gardener. A very consider- able proportion of the per- ennial plants which we see have been so produced. This applies especially to the Grasses and Sedges, whose perennial rhizomes are con- stantly growing forward, and as constantly rotting pro- gressively from the base. But probably the most prominent, and .a the same time familiar example of all is the Bracken Fern, which covers immense areas all over the world. Its underground rhizomes brand; freely; if a single specimen be dug up, and followed backwards, the brown region of decay is soon reached. Young <;eedling Bracken- are rarely met with in the open. Here then is a case where the growth and branching of the individual are practically unlimited, and where its vegetative increase in number of physiologically independent units appears to be unlimited too. It may be held as a type of that vegetative spread and multiplication which, though it involves no special development lor the purpose, is freciuent among perennial Tig. 167. Part of leaf of Gloxinia, bearing adventitious l>u after cultivation, in heat, on moist 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 Bower, F. O. (Frederick Orpen), 1855-1948. London, Macmillan
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectbotany, bookyear1919
