8. DIERVÍLLA, Tourn. Bush-Honeysuckle.
Calyx-tube tapering at the summit; the lobes slender, awl-shaped, persistent. Corolla funnel-form, 5-lobed, almost regular. Stamens 5. Pod ovoid-oblong, pointed, 2-celled, 2-valved, septicidal, many-seeded.—Low upright shrubs, with ovate or oblong pointed serrate leaves, and cymosely 3–several-flowered peduncles, from the upper axils or terminal. (Named in compliment to Dr. Dierville, who brought it from Canada to Tournefort.)
1. D. trífida, Moench. Leaves oblong-ovate, taper-pointed, petioled; peduncles mostly 3-flowered; pod long-beaked.—Rocks, Newf. to the mountains of N. C., west to Minn. June–Aug.—Flowers honey-color, not showy, as are the Japanese species cultivated under the name of Weigela.
Order 52. RUBIÀCEÆ. (Madder Family.)
Shrubs or herbs, with opposite entire leaves connected by interposed stipules, or in whorls without apparent stipules, the calyx coherent with the 2–4-celled ovary, the stamens as many as the lobes of the regular corolla (4–5), and inserted on its tube.—Flowers perfect, but often dimorphous (as in Mitchella and Houstonia). Fruit various. Seeds anatropous or amphitropous. Embryo commonly pretty large, in copious hard albumen.—A very large family, the greater part, and all its most important plants (such as the Coffee and Peruvian-Bark trees), tropical.
I. CINCHONEÆ. Ovules numerous in each cell; leaves opposite.
1. Houstonia. Corolla salver-form or funnel-form, 4-lobed. Seeds rather few, thimble-shaped or saucer-shaped. Low herbs.
2. Oldenlandia. Corolla wheel-shaped in our species, 4-lobed. Seeds very numerous and minute, angular. Low herbs.
II. COFFEINEÆ. Ovules solitary in the cells; leaves mostly opposite.
[+] Flowers in a close and globose long-peduncled head. Fruit dry. Shrubs.