Adaptation of Wild Flowers in the Forests
Forms of adaptation required to preserve the species vary. One of the simplest ways of guaranteeing survival is by the production of vast numbers of seeds, and flowers of the field are known to be particularly vigorous in this respect.
Although difficult to eradicate it is a welcome plant in that it is one of the earliest to flower in spring. What makes eradication of Coltsfoot difficult is its extensive root system. The rhizomes, the foodstore of the plant, spread horizontally below the surface of the soil at depths ranging from 20-250 cm, with the greatest concentration found 1 m down. From this, shoots rise to form new rooting plants on the surface, and in autumn, several flower buds form below the surface, close under the leaves, in readiness for the following spring.
As the Latin name persica indicates, the Field Speedwell comes from the Orient. It was grown as an exotic plant in the botanical gardens at Karlsruhe, becoming established in the vicinity as an escapee in 1805. It took only a few decades for it to spread throughout Europe and now, almost two centuries later, it is found growing in fields, fallow land, and gardens in most parts of the world. In poor weather, reproduction may be by self Pollination without the flowers opening. It is a common weed in damp soil, particularly in root crops.
Coltsfoot is a plant of two guises. Early in spring, sometimes as early as February, scaly stems bearing lovely bright yellow flowers emerge above the ground.
Another important consideration is that the seeds of field weed – plants are extremely resistent to adverse conditions and remain viable for phenomenal lengths of time. Seeds from old herbariums have been known to germinate after a century. Other investigators have shown that the seeds of Orach remained viable beneath the foundations of a building for 150 years and that Wild Mustard has germinated after 200 years.
These are arranged in a ground rosette, with an effect as of white felt on the underside. This is due to hair-like outgrowths, composed of one row of cells, the last of which is several times longer than the rest and often curled in a spiral round the base of the hair.
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