. 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. Gardening; Horticulture; Horticulture; Horticulture. 894 LAWSONIA apple ti-iLS to an uuusii detached parts glabrous shrub, with branches spiny or not. Important generic characters are: calyx 4-parte'd: petals 4: stamens 8: capsule globose, 4-celled, rupturing irregularly. ilba. Lam. Henna Plant. Lvs. opposite, oval-lance
. 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. Gardening; Horticulture; Horticulture; Horticulture. 894 LAWSONIA apple ti-iLS to an uuusii detached parts glabrous shrub, with branches spiny or not. Important generic characters are: calyx 4-parte'd: petals 4: stamens 8: capsule globose, 4-celled, rupturing irregularly. ilba. Lam. Henna Plant. Lvs. opposite, oval-lanceo- late, entire, short-stalked : fls. panicled. Native to In- dia, the Orient, N. Afr. Naturalized in West Indies. LAYERING. Figs. 1248-1253. Layering is the pro- cess by which a part of a plant stem is made to produce roots while still attached to and nourished by the parent plant, so that it may be able to maintain an independent 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. Tt iiKiy lio in the species of Ficus culti- vated ill tl). -iiM ii!ir,i|.,., inEpiga=aand Ji'luis Toxicoden- dron ill th. \\ I-. in tomato vines in the garden, in :; cm Ihe fjround, and frequently in young u tlie trunk becomes covered with earth pth. With most such plants, rooting by is easily accomplished, and this being more convenient,Iayering 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 results may come, sometimes more readily, from or near a callus formed in the effort to
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Keywords: ., bookcentury1900, bookdecade1900, booksubjec, booksubjectgardening
