It is a suitable plant for the moist parts of rockwork, where it may be grown with such things as Cardamine trifolia, Galax aphylla, Pyrola rotundifolia, and Salix reticulata, and it would form a rich edging to choice dwarf plants, more especially if the position were gutter-formed, as it loves moisture in abundance. In such positions as those just mentioned, together with a light vegetable soil, this plant will grow to perfection, and that it is worth a proper place is evidenced by its long-continued blooming. Many flowers come and go during its period of attractiveness, and, after the summer flush, it is one to remain, braving alike the hot sunshine and heavy rain. Its propagation is by division of the roots in autumn or very early spring.
Flowering period, June to October.
Corydalis Lutea
A native herbaceous perennial, though somewhat rare in a wild state. As grown in gardens, where it seems to appreciate cultural attentions, it proves both useful and effective, especially when placed in partial shade (when its foliage has an almost maiden-hair-like appearance), or as an edging it proves both neat and beautiful.
It seldom exceeds a foot in height. The flowers are small, a yellow, white and green mixture, the yellow predominating; they are produced in loose spare racemes, on well-foliaged diffuse stems, which are also angular; the calyx is composed of two leaves; the petals are four, forming a snapdragon-like flower. The leaves are bipinnate, leaflets wedge-shape, trifoliate, and glaucous; the foliage very dense, having a pretty drooping habit. It flowers all summer, and is one of the most useful plants in a garden to cut from, the foliage being more valuable than the flowers.
Its native habitats are said to be old walls and ruins, but I have proved it for years to do grandly in ordinary garden soil, both exposed and in the shade of fruit trees. When once established it propagates itself freely by seed. I ought to add that it answers admirably grown in pots for window decoration, the rich foliage nearly hiding the pot.
Flowering period, May to October.
Corydalis Nobilis
Fig. 29. Corydalis Nobilis.
(One-half natural size; blossom, natural size.)
A hardy tuberose perennial, imported from Siberia in 1783. It is one of that section of the Fumitories called "Hollowe Roote," the appropriateness of which name is most amply illustrated in the species now under consideration. If, in the first or second month of the year, a strong specimen is examined, the long and otherwise stout tuberous root will be found, immediately under the healthy and plump crown, to be not only hollow, but so decayed that the lower and heavy fleshy parts of the root, which are attached to the crown by a narrow and very thin portion of the root bark, in such a way as to suggest that the lower parts might as well be cut off as useless—but, let me say, do not cut it. If it is intended to replant the specimen, let it go back to "Mother Earth" with all its parts, deformed as some may seem to us; otherwise Corydalis nobilis will be anything but a noble plant at the flowering season; it may not die, but it will probably make for itself another "hollowe roote" before it produces any flowers, The habit and form of this plant are perfect (see Fig. 29), and there are other points of excellence about it which cannot be shown by an engraving, in the way of the arrangements of colours and shades. Seldom does the little plant, so full of character, exceed a height of 8in. The specimen from which the drawing was made was 7in., and grown fully exposed in a pot plunged in sand. Another plant, grown on rockwork, "high and dry," is about the same size, but it looks better fed. Probably the long roots are short of depth in pots, and the amount of decay may soon poison the handful of mould contained therein. Be that as it may, the specimens grown in pots have a hungry appearance compared with those less confined at the roots.
The flowers are a pleasing mixture of white, yellow, brown, and green. The four petals are of such a shape and so arranged as to form a small snapdragon-like flower. These are densely produced in a terminal cluster in pyramid form on the stout and richly-foliaged stem; dense as is the head of flowers, every floret is alternated with a richly-cut leaf, both diminishing in size as they near the top. The older flowers become yellow, with two petals tipped with brown, the younger ones have more white and green, and the youngest are a rich blend of white and green; the head or truss is therefore very beautiful in both form and colour, and withal exquisitely scented, like peach blossom and lilac. The leaves are stalked bipinnate; leaflets three-parted, cut, and glaucous; there are few plants with more handsome foliage, and its beauty is further enhanced by the gracefully bending habit of the whole compound leaf. The flowers are too stiff for cutting, and otherwise their fine forms, colours, and perfume cannot well be enjoyed unless the plants are grown either in pots or at suitable elevations on rockwork, the latter being the more preferable way. The long blooming period of this plant adds not a little to its value, lasting, as it does, quite a month, the weather having little or no effect on the flowers.
Any kind of sweet garden soil seems to do for it, and its propagation is carried out by careful root division.
Flowering period, April to June.
Corydalis Solida
This is said to be a British species, but it is a doubtful, as well as somewhat scarce one. Though but a small plant of the height of 6in. or 8in., it is very effective, being compact with finely-cut foliage of a pale glaucous green, and the stems pleasingly tinted. For some weeks in early spring it forms a graceful object on rockwork, where it seems to thrive well.
The flowers, which are purple, are not showy; still, they are effective from the way in which they are borne, as the illustration (Fig. 30) will show. Its specific name is in reference to its root, which is bulbous and solid. Many of the Fumitories have remarkably hollow roots, and one of the old names of this genus is written "Hollowe roote." When the flowers fade the whole plant withers, nothing being left but the bulbous roots to complete their ripening; still, this should not hinder its extensive cultivation, because it not only appears in its best form when flowers are rare, but also because it is so pleasingly distinct.
Fig. 30. Corydalis Solida.
(One-half natural size.)
I find it to do well on rockwork, also in well-drained borders of light loam. It should be allowed to increase until it forms good-sized tufts, which it soon does. To propagate it, it is only necessary to divide the tubers any time from July to October.
Flowering period, February to May.
Crocus Medius
This is a charming kind, seldom seen and, perhaps, little known; the name would imply that it is a variety having equal traits of two other forms. It blooms in January and the flowers appear without any foliage. So well is the Crocus known, it will only be needful to state the more striking features of the one under notice.
The flowers are produced on tubes 3in. to 5in. long, and stoutly formed; the colour is a shaded lilac-purple, striped with darker lines; the petals or divisions of the