. Elementary botany . Botany. i66 DICOTYLEDONS distinctly seen in some other species of Chrysanthemum, the straps of which have three terminal teeth. The straps of the Sunflower and Daisy are not toothed at their ends. Thus. Figs. 209-212.—Sunflower. Fig. 209.—Ray-fiower. Fig. .210.—Disk-flower. Fig. 211. —Vertical section of Disk-flower. Fig. 212.—Vertical section of achene : /c=pericarp ; /j=testa; C(7^=cotyledons ; r=radicle. the strap of the Dandelion represents five joined petals, and the flower may be described as a true ligulate (strap-like) flower; whereas the strap of the corolla belo
. Elementary botany . Botany. i66 DICOTYLEDONS distinctly seen in some other species of Chrysanthemum, the straps of which have three terminal teeth. The straps of the Sunflower and Daisy are not toothed at their ends. Thus. Figs. 209-212.—Sunflower. Fig. 209.—Ray-fiower. Fig. .210.—Disk-flower. Fig. 211. —Vertical section of Disk-flower. Fig. 212.—Vertical section of achene : /c=pericarp ; /j=testa; C(7^=cotyledons ; r=radicle. the strap of the Dandelion represents five joined petals, and the flower may be described as a true ligulate (strap-like) flower; whereas the strap of the corolla belonging to the ray- flowers of the three other types represents only a part of the corolla (three petals), and may be referred to as Si. false ligulate flower. The ray-flowers of all three types possess no stamens ; in the two Daisies they have a gynsecium, and are therefore carpellary flowers : but in the Sunflower they have no style and stigma, though an empty ovary-tube is present. We note each disk-flower of the Sunflower arises in the axil of a scale-like bract (figs. 208, 210 b); whereas the inflor- escence-receptacle of the two Daisies, like that of the Dande- lion, only has those bracts which form the 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 original Groom, Percy, 1865-1931. London : G. Bell
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Keywords: ., bookcentury1800, bookdecade1890, booksubjectbotany, bookyear1898
