. Cyclopedia of American horticulture, comprising suggestions for cultivation of horticultural plants, descriptions of the species of fruits, vegetables, flowers and ornamental plants sold in the United States and Canada, together with geographical and biographical sketches, and a synopsis of the vegetable kingdom. Gardening -- Dictionaries; Plants -- North America encyclopedias. 894 LAWSONIA LAYERING glabrous sbnib, with branches spiny or not. Important generic characters are: calyx4-parted: petals 4: stamens 8: capsule globose, 4-celled, rupturing irregularly. Alba, Lam. Henna Plant. Lvs. op
. Cyclopedia of American horticulture, comprising suggestions for cultivation of horticultural plants, descriptions of the species of fruits, vegetables, flowers and ornamental plants sold in the United States and Canada, together with geographical and biographical sketches, and a synopsis of the vegetable kingdom. Gardening -- Dictionaries; Plants -- North America encyclopedias. 894 LAWSONIA LAYERING glabrous sbnib, with branches spiny or not. Important generic characters are: calyx4-parted: petals 4: stamens 8: capsule globose, 4-celled, rupturing irregularly. Alba, Lam. Henna Plant. Lvs. opposite, oval-lanceo- late, entire, short-stalked : fls. paiiicled. Native to In- dia, the Orient, N. Afr. Naturalized in West Indies. LAYERING. Figs. 1248-1253. Layering is tlio jiro- cess by which apart of a plant stem is mad.' to roots while still attached to and nourished I'V tli- |>;n>rit plant, so that it may be able to maintain an * growth. The tendency, under favorable conditions, to produce roots from the cambium zone of some part of the stem is manifested by many plants, especially in the tropics. It may be noticed in the species of Ficus culti- vated in the greenhouse, in Epigaea and Bhus Toxicoden- dron in the woods, in tomato vines in the garden, in grape canes lying on the ground, and frequently in young apple trees when the trunk becomes covered with earth to an unusual depth. With most such plants, rooting by detached parts is easily accomplished, and this being more convenient,layering is generally practiced only with those plants which do not root readily from cuttings. The mode of root-production is essentially the same in either case. The right conditions as to moisture, temperature, food supply, etc., seem to stimulate the formation of one or more growing points in the cambium zone. The multiplying cells force their way through the bark, and if favorable soil contact is secured, supporting roots are soon developed. The same resul
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Keywords: ., bookcentury1900, bookdecade1900, bookpublishernewyo, bookyear1906
