We have frequently pointed out the advantages which horticulture might derive from some of our indigenous plants. One of our friends, M. Viginien, a zealous botanist, has drawn our attention to the Violet of Rouen as a plant adapted for edgings. M. Jacques has introduced this edging into the Park of Villiers. This horticultural novelty, so far as we are aware, has not been propagated elsewhere; and we venture to recommend it as a treasure of which many horticulturists do not know the value.

A few words upon the principal characters by which the Violet of Rouen, Viola rothoma-gensis, may be distinguished will, we think, be necessary to enable our friends to identify it It is perennial, with diffuse tufted angular branches, spreading at the base, and then growing erect to the height of eight or ten inches in a cultivated state; but according to authors the actual height of the plant in a wild state is seldom more than five or six inches. The leaves, which are of a greyish green, are oblong oval, deeply crenated, and, as well as their petioles and stipules, thinly set with hispid hairs. The stipules are large, pinnati-partite lyrate, the terminal lobe usually entire, or nearly so, and larger than the side ones, which are linear. The peduncles are long, furnished with two bracts, and supporting flowers with petals which do not equal twice the length of the calyx. The spur is linear, straight, elongated; the flowers are blueish and violet.

The Violet of Rouen is a species much sought after by the Parisian florists on account of its rarity. In the neighborhood of Paris it is only to be found, it is said, at Mantes, Liancourt, and Meaux; but its true locality is Saint-Adrien, near Rouen, where on the sandy banks of the Seine the plant is said to be very abundant.

This Violet, which some botanists considered to be only a variety of V. tricolor, was scarcely cultivated till about 1789. It produces numerous flowers throughout the summer. It is one of the group of Violaceae, which exhibit the property of being perennial, an important point for the horticulturist. Its appearance is graceful, its flowers are richly colored, and its stems have the advantage of covering the surface of the soil. Lastly, it produces from May till October a profusion of flowers, and it is very readily propagated by seed. About the year 1840 the happy idea occurred to M. Jacques of sowing the Rouen Violet in the Park of Villiers, and planting out the seeedlings as edgings; and, as we have stated, with very satisfactory results. The late gardener of Neuilly has therefore enriched horticulture with a valuable plant, which will rank as high as any other, such as Statices, Primulas, Larkspurs, Ac, employed for the same purpose. Lion Gouas, in the Revue, Horticole.

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