. The families of flowering plants. Plants; Phanerogams. FAMILIES OF FLOWEEING PLANTS 115 "head," the latter of the enlarged root. Mustard is derived from the seeds of another species of Brassica; the genus is illustrated in Fig. 98. The radish is the root of Baphanm sativus; while horse-radish is the dried and pulverized root of Borippa 'Armoracia. Among ornamental crucifers may be mentioned the stock (MattMoh), the rocket (Resperis), the candytuft (Iberis), and the sweet alyssum {Konig maritimum).* ' Family Tovariaceae. Tovaria Family. Consists of a single genus and species, Tovari
. The families of flowering plants. Plants; Phanerogams. FAMILIES OF FLOWEEING PLANTS 115 "head," the latter of the enlarged root. Mustard is derived from the seeds of another species of Brassica; the genus is illustrated in Fig. 98. The radish is the root of Baphanm sativus; while horse-radish is the dried and pulverized root of Borippa 'Armoracia. Among ornamental crucifers may be mentioned the stock (MattMoh), the rocket (Resperis), the candytuft (Iberis), and the sweet alyssum {Konig maritimum).* ' Family Tovariaceae. Tovaria Family. Consists of a single genus and species, Tovaria pendula, a tropical American herb with an odor resembling that of celery, and structurally similar to the caperworts. ^ Family Capparidaceae. Caper Family. Contains about 35 genera and 400 species, natives chiefly of warm regions, and compris- ing both herbs and shrubs. They have simple or palmate leaves and variously clus- tered flowers. The sepals are from 4 to 8, the petals usually 4, often borne on long claws; the stamens are from 6 to many, all of equal length. The ovary is fre- quently long-stalked, and be- comes in fruit either a cap- sule or a berry. Several species of Cleome are prominent among the flowers of the western plains, as also two species of Poh,- nisia, the "clammy-weed," so called on account of its viscid pubescence (see Fig. 99.) Capers are the preserved flower-buds of a species of Capparis, and the industry is an important one in some parts of Europe. Family Eesedaceae. Mignonette Family". Contains 6 genera and about 55 species, belonging mostly to the Old World. They are herbs with alternate leaves and unsymmetrical flowers, borne in spikes or racemes. The calyx is 4-7 parted, the petals similar; stamens usually numerous; ovary compound, becoming in fruit a many-seeded Fig. 99, The clammy-weed {Polanisia graveolens). After Britton & Brown, 111. Fl. Northeast. U. S. * Odd as this name may appear to the uninitiated, the genus
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