. Botany for agricultural students. Plants. MYXOMYCETES 337. Fig. 288. — Plasiiiudium uf a INIyxo- mycete growing on wood. X about |. (meaning slime) and myces (meaning mold or fungus) {Fig. 288). This naked mass of protoplasm is called a Plasmodium. It is a semi-liquid and is found flowing out of the cracks of rotten logs and stumps, forming white or colored doughy-like masses. They are often found creeping out of the cracks of old plank walks, out of decayed bark, or out of apple pumice around a cider mill. Some of the Myxomy- cetes are parasites, living in the tissues of higher plants and o
. Botany for agricultural students. Plants. MYXOMYCETES 337. Fig. 288. — Plasiiiudium uf a INIyxo- mycete growing on wood. X about |. (meaning slime) and myces (meaning mold or fungus) {Fig. 288). This naked mass of protoplasm is called a Plasmodium. It is a semi-liquid and is found flowing out of the cracks of rotten logs and stumps, forming white or colored doughy-like masses. They are often found creeping out of the cracks of old plank walks, out of decayed bark, or out of apple pumice around a cider mill. Some of the Myxomy- cetes are parasites, living in the tissues of higher plants and often causing much in- jury. The Plasmodium is multi- nucleate and is able, by put- ting out and withdrawing regions of its body, to move about like a gigantic Amoeba. Sometimes the Plasmodium' breaks up into many smaller portions which are able, by means of cilia or flagella to move about like the low forms of animals. The Myxomycetes have the characteristics of both plants and animals, and opin- ions differ as to whether they should be classed as plants or animals. Their method of obtaining food consists chiefly in digesting the substances found in other plants. Those forms which live on dead organisms are able to utilize the carbohy- drates remaining in decaying organic matter, while those attacking living plants prey upon the tissues of the plant attacked. Those forms living on dead organisms are called sapro- phytes, while those forms living on living organisms are called parasites. The living organism attacked is called the host. Reproduction in the Myxomycetes is asexual. The first indi- cation of reproduction in most of the saprophytic forms is the appearance of upward projections on the surface of the Plas- modium. Into these projections, which arc at first hollow. 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 o
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectplants, bookyear1919
