. Botany all the year round; a practical text-book for schools. Botany. 307. The Ligulate, or strap-shaped corolla, seen in the rays of the sunflower family, is of such frequent occurrence as to deserve a special examination. If you will remove one of the small blos- soms from the disk of any large composite flower (Fig. 426) and imagine its corolla greatly en- larged and split open on the inner side, you will get a very good idea of 426. — a head of artichoke 427. — A ray flower of the nature of the ^°'"'^'^ divided lengthwise. artichoke, enlarged. rays. The five little teeth into which
. Botany all the year round; a practical text-book for schools. Botany. 307. The Ligulate, or strap-shaped corolla, seen in the rays of the sunflower family, is of such frequent occurrence as to deserve a special examination. If you will remove one of the small blos- soms from the disk of any large composite flower (Fig. 426) and imagine its corolla greatly en- larged and split open on the inner side, you will get a very good idea of 426. — a head of artichoke 427. — A ray flower of the nature of the ^°'"'^'^ divided lengthwise. artichoke, enlarged. rays. The five little teeth into which it is usually cleft at the top show the number of lobes or petals of which it is composed. The corolla of the lobelia St. /ss^ .^-^^ represents an intermediate state between the tubular and ligu- late forms (Fig. 4i29). 308. Bilabiate Co- rollas. — By far the most important and widely distributed of sympetalous corollas is the bilabiate, or two-lipped kind, dis-. 429, — Fio'wer oiLo^eHa cardinalis, with tube of tinctivC of the mint . — A vertical section of a disk flower, showing the divided corolla divided on one style, st, and the sta- side; filaments and an- mens, J, s, with their thers united into a tube and their allied anthers united (syn- {after Gray) : f, tube of genesious), filaments; a, anthers. and figwort families known species. groups, numbering in all over six thousand They are of many varieties, from the scarcely perceptible irregularity of the verbena and mullein to the complicated structures of the sage, snapdragon, and toad flax. Two of them are so strongly marked that they have received special names. These are the ringent, or open-mouthed, and the personate, or closed (Figs. 430. 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 Andrews, Eliza Frances, b. 1840. New York, Cinc
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