. Cyclopedia of farm crops. Farm produce; Agriculture. ^ —V'^-^'^ 'p/^^^ w^^ ^x^ " MM//// ,wv;;^l ^,--^csf-^:? ^^--. Fig. 2. A fern, one of the vascular (or vessel-bearing) flowerless plants. The fruit-bodies, bearing spores, are shown on the back of a leaf at O. The custom has arisen of designating the kinds or species of plants by Latin-form names in two parts,— the first part or word standing for the genus or race-group, and the second part standing for the particular species or kind. Thus, all kinds of true clover belong to the genus Trifolium. The alsike clover is Trifolium hyhr
. Cyclopedia of farm crops. Farm produce; Agriculture. ^ —V'^-^'^ 'p/^^^ w^^ ^x^ " MM//// ,wv;;^l ^,--^csf-^:? ^^--. Fig. 2. A fern, one of the vascular (or vessel-bearing) flowerless plants. The fruit-bodies, bearing spores, are shown on the back of a leaf at O. The custom has arisen of designating the kinds or species of plants by Latin-form names in two parts,— the first part or word standing for the genus or race-group, and the second part standing for the particular species or kind. Thus, all kinds of true clover belong to the genus Trifolium. The alsike clover is Trifolium hyhridum; the white clover, T. repcns; the common red clover, T. praknse; the berseem, T. Alexandrinum. Varieties of species, or subordinate forms, are designated by a third Latin- form word, as Trifolium, pratense var. perenne, for the true perennial form of red clover. These names are always used with precision for one particular kind of plant, and they afford the only means of desig- nating them accurately. Common or English names are of little service, as now used, in distinguishing species accurately. Plants are also assembled in families, which are groups comprising genera that naturally resemble each other in certain bold or general characters. The farmer is specially concerned with the members of some of the family associations. The grass family, or Graminea:, includes all the true grasses and the cereal grains, such as maize, wheat, oats, barley, rye, rice ; also, sorghum and sugar-cane. The rose family, Rosacece, contains many of the fruits,— all the stone-fruits and pome-fruits, raspberry, black- berry, strawberry. The pulse family, Le.(7Mminosa5, comprises the nitrogen-gatherers,— all peas, beans, clovers, vetches, alfalfa. The mustard family, Cruciferm, includes all the mustards, cabbages and kales, rape, turnip and rutabaga, radish. The nightshade family, Solanacece, includes potato, tomato, egg- plant, pepper, tobacco. The rue family, or RutaeecB, comprises a
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