This is a hardy herbaceous plant, of great beauty. The flowers are not showy, but their great numbers and arrangement render them of importance in what may be termed a fine-foliaged subject. The Isopyrums are very nearly related to the thalictrums or rues, and this one greatly resembles the maidenhair-like section, one of which it is often taken for. There is, however, an important botanical difference between the two genera: the thalictrums have no calyx, and the Isopyrums have. Still, as the flowers of both are very small, that feature is not very observable. As a decorative plant it may be classed with the maidenhair-like rues, and the illustration may be said to give a fair idea of three or four species.
Fig. 54. Isopyrum Gracilis.
(One-eighth natural size; 1, leaflet, full size.)
The Isopyrum under notice grows 12in. or 15in. high, and produces its dark brown flowers on slender, well-branched stems, forming feathery panicles, which have a graceful appearance. The flowers are very small, and composed of a five-cleft calyx, five equal petals, and numerous long, pendent seed-organs; the stems are elegantly furnished with the fine-cut foliage. The leaves are large, but the leaflets small, as may be seen by the one given, full size, in the drawing (Fig. 54), being somewhat cordate, lobed, and dentate; they have hair-like stalks, which add to their elegance of arrangement, and their glaucous colour further enhances their effectiveness.
This light and diffuse subject may be usefully planted to relieve other kinds; in beds or lines it looks well, having a lace-like effect; as a cut flower or spray it nearly equals maidenhair, and for mixing with large flowers, it perhaps excels. Either cut or in the growing state it is very durable. It may be grown in average garden soil, but to have it fine, it should be given vegetable soil and a moist situation, not shaded. It is propagated by seeds or division of the roots in autumn.
Flowering period, July and August.
Jasminum Nudiflorum.
Nude-flowered Jasmine; Nat. Ord. Jasminaceæ.
