. Botany of the living plant. Botany. APPENDIX A 495 arc incompletely fused, and each has its separate style and stigma : an indication of a primitive apocarpous state. Other members of the Order show various steps in cohesion and adhesion of the outer parts. For instance, in (2) the Wild Hyacinth {Scilla nutans, Sm.) the stamens are adherent to the perianth-segments (epiphyllous). In the Grape-Hyacinth (Rhiscari), and the Lily of the Valley (Convdllaria) the seg- ments of the perianth are coherent into a bell. In some Lilies the perianth may form a long tube, while the style is proportionally
. Botany of the living plant. Botany. APPENDIX A 495 arc incompletely fused, and each has its separate style and stigma : an indication of a primitive apocarpous state. Other members of the Order show various steps in cohesion and adhesion of the outer parts. For instance, in (2) the Wild Hyacinth {Scilla nutans, Sm.) the stamens are adherent to the perianth-segments (epiphyllous). In the Grape-Hyacinth (Rhiscari), and the Lily of the Valley (Convdllaria) the seg- ments of the perianth are coherent into a bell. In some Lilies the perianth may form a long tube, while the style is proportionally elongated. But still the ovary is superior; even in Colchicum, where it is below ground, it stands above the insertion of the long tube- like perianth. In others, as in Hemero- oallis, the gamophyllous flower is zygomorphie. Thus the primitive state seen in the Tulip may be modified in relation to polhnation by insects. Pollination. The flower of the Tulip is conspicuous by its size, and colour ; but there is no honey, though in the nearly allied Fritillaria a large honej'- gland lies at the base of each perianth- segment. The Tulip is visited by insects for its pollen and so crossing may be effected ; but it is not a specialised mechanism. The fruit of the Lihaceae is either a capsule, splitting by longitudinal slits, and so shedding the seeds, which are flattened, and readily carried by the wind ; or it may be a berrjr as in Lily of the Valle)^ or Asparagus, and thus be distributed by Fig. 399. Transverse section of the superior ovary of Lily, shelving tfie ttixee syncarpous carpels, bearing the anatropous ovolles on their infolded margins. F. O. B. Familv : Amaryllidaceae. Examples : Snowdrop, Narcissus. Those Liliales which have the same floral plan as the Lihaceae, but with an ovary inferior, are grouped as Amarjdlidaceae. But there is no sharp line of demarcation between the hypogynous and the epigynous tj'pes. Some genera show an intermediate state, their half-i
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectbotany, bookyear1919
