Hardy Perennials and Old Fashioned Flowers Part 43

Saxifraga Coriophylla.

_Nat. Ord._ SAXIFRAGACEae.

This is a rather recently discovered alpine species, very dwarf, but beautiful. The specific name would appear to be in allusion to its flowers as pink-shaped; they are very small, but the reader, by referring to the cut (Fig. 85), may form his own opinion of such likeness; however well founded or otherwise the name may be, we have in this subject a gem for the rock garden. It is a native of Albania, and belongs to that section of its extensive genus having triquetrous and obtuse leaves, or blunt three-sided foliage, as formed by a well developed keel. It is in flower in the middle of March, at the height of 2in. All its parts are of miniature dimensions, and yet when grown in a suitable position it is effective.

[Ill.u.s.tration: FIG. 85. SAXIFRAGA CORIOPHYLLA.

(One-half natural size.)]

The flowers are pure white, produced on leafy stems an inch or more high; they are few, and open in succession; petals round and overlapping; calyx large for the size of flower, and covered with down; sepals obtuse and tipped with a brown, almost red-tint; stamens short, having rather large yellow anthers, which fill the throat of the corolla. The leaves are evergreen or silvery grey, arranged in small rosettes, and in. long, of good substance, rigid and smooth; their shape is obtuse, concave, and keeled; they are furnished with marginal excavations, which present themselves as dots; the habit is compact, the rosettes being crowded and forming cushioned-shaped specimens; the flowers last for a fortnight in average weather.

Between large stones in vegetable mould and grit, it both thrives and shows to advantage; it is also a charming subject for the pot culture of alpines. In company with the red-stalked and white-flowered _S.

Burseriana_, the purple _S. oppositifolia_, and the many other forms of the mossy section, all, or nearly all in bloom about the same time, it offers a pleasing variety, as being distinct in every way from its contemporaries, more especially in the foliage. It is rather a slow grower, and not so readily increased as most Saxifrages; it is greatly benefited by having pebbles or small stones about the collar. These keep it moist at the roots during the growing season. If a little dry cow manure or guano is dusted amongst the stones during early summer, the results will soon be seen; such growth, however, should not be stimulated during the latter half of the year, or from its want of ripeness it will be liable to damage during winter. This practice of top dressing greatly a.s.sists the parts touching the earth to root, and so either an increased stock or larger specimens may sooner be obtained.

Flowering period, March.

Saxifraga Fortunei.

FORTUNE'S SAXIFRAGE; _Nat. Ord._ SAXIFRAGACEae.

This, as may at once be seen by a glance at Fig. 86, belongs to the lobed-leafed section. It is as yet new in English gardens, and is often grown in pots in warm gla.s.shouses. It is, however, perfectly hardy, having stood out with me in the open for the past three years. It is nearly related to _S. j.a.ponica_ and its varieties, but is without the stolons or runners. In this climate, with outdoor treatment, it flowers in October until cut down by frost, which sometimes happens before the flowers get well out. It has been stated not only that it is not hardy, but that its flowering period is May. With me it has proved otherwise, and others have proved it to flower naturally in October. I also observed it in bloom in the Hull Botanic Gardens on the open rockwork in November, 1882. I have no doubt that autumn is the natural season for well-established plants to flower; weaker specimens may fail to push forth ere the frost cuts down their leaves, when the dormant buds must remain sealed for the winter, but ready to develope with the return of longer and warmer days.

The flowers are arranged in panicles on scapes nearly a foot high, the panicles being 6in. long and 3in. in diameter. The petals are long and narrow, of uneven length, and notched; colour pure white. The calyx is well developed; segments oval, notched at the ends; colour, pale apple green. Stamens, long and tipped with beautifully orange-coloured anthers. The ovary is prominent, and of a pale yellow. Besides the above features, the flowers, which mostly look sideways and are quite an inch across their broadest parts, have one very long petal at the low side, and the two next are at right angles with it, less than half its size, the two upper ones being still less; the effect is both unusual and pleasing. The leaf stalks are long, stout, and of a succulent nature, semi-transparent, and slightly furnished with longish hairs; the stipules are ample, and of a bright red, which colour extends for a short length up the stalk. The leaves are kidney-shaped, 2in. to 5in.

across, eight or ten lobed, toothed and reflexed; they are furnished with solitary stiff hairs, are of good substance, and a very dark green colour, but herbaceous. The habit of this species is neat and very floriferous; therefore it is a valuable plant for in or outdoor gardening; but owing to its late season of flowering outside, the blossom is liable to injury. A bell gla.s.s, however, will meet the case; it should be placed over the plant, but tilted slightly, when there are signs of frost--the flowers will amply reward such care. If the bloom can be cut clean, a good cl.u.s.ter will vie with many orchids for delicacy and effect.

[Ill.u.s.tration: FIG. 86. SAXIFRAGA FORTUNEI.

(One-fifth natural size; 1 and 2, full size.)]

I find it to do well in fat loam, and with the same kind of soil in pots, which comes in for placing in cold frames when frost threatens. I find it one of the easiest plants possible to manage--in fact, it needs no care to grow it; still, many amateurs fail to keep it, I suppose from taking it into a warm greenhouse, where it is sure to dwindle. It is readily propagated by division of the crowns, which should be done in spring.

Flowering period, October until strong frosts.

Saxifraga (Megasea) Ligulata.

_Nat. Ord._ SAXIFRAGACEae.

One of the large-leaved species (see Fig. 87) compared with others of the _Megasea_ section, its leaves are strap-like, as implied by the specific name. It is sometimes called _Megasea ciliata_, but there is a large-leaved species, commonly called _S. ciliata_, which is very distinct from this one, and it is all the more important that they should not be confounded with each other, as _S. ciliata_ is not very hardy, whilst this is perfectly so, being also one of our finest herbaceous perennials. It comes to us from Nepaul, and has not long been cultivated in this country.

[Ill.u.s.tration: FIG. 87. SAXIFRAGA (MEGASEA) LIGULATA.]

Its flowers are produced numerously on bold stout stems 10in. high.

Sometimes the flower-stem is branched. The pale but clear rosy flowers are not only showy, but very enduring, lasting several weeks. The leaves are six to ten inches long, of irregular form, but handsomely ribbed and wavy; the new growths are bright yellowish-green, and tinted from the edges with a reddish bronze, so that, during spring, besides being finely in flower, it is otherwise a pleasing plant to look upon.

Moreover, it is one of the few bold kinds of plants which flower so early and therefore a most valuable subject for the spring flower-beds.

It looks well in any position, either near or back from the walks, in shrubs, or as a centre specimen for beds; it is also a plant that may be moved easily, as it carries plenty of root and earth, consequently it may be used in such designs as necessitate frequent transplantings. It is not particular as to soil or position, but in light earth, well enriched with stable manure, I have found it to thrive, so as to be equal to many of the so-called "fine foliage" plants during summer; therefore, I should say, give it rich food. To propagate it, a strong specimen with branched crowns should be selected. These branches or stems are in. to 1in. thick. They should be cut off with as much length as possible; if they have a bit of root, all the better; if not, it does not much matter. Let the cut end dry for a little time, take off half, or even the whole, of the largest leaves, or the action of the wind will prevent their remaining firm. When so prepared, the cuttings may be deeply planted in sandy loam, which has previously been deeply stirred.

This may be done as soon as the flowers are past, and by the end of the year the cuttings should be well rooted and suitable for moving into the ornamental part of the garden.

Flowering period, March to May.

Saxifraga Longifolia.

LONG-LEAVED SAXIFRAGE; QUEEN OF SAXIFRAGES; _Nat.

Ord._ SAXIFRAGACEae.

Numerous and beautiful as are the species and varieties of this genus, this is the most admired of them all, from which fact it derives its proud name of "Queen." It is of recent introduction; habitat, the Pyrenees; but though of alpine origin, it thrives in lower, I may say the lowest, situations even in our wet climate. As will be seen by the ill.u.s.tration (Fig. 88), it belongs to the rosette section, and may indeed be said, for size and symmetry, to head the list. There are many forms of it, differing more or less in shape of leaves, colour, habit, and size of rosette. The original or reputed type is but an indifferent form compared with the one now generally accepted as the representative of the species. So readily do the various Saxifrages become crossed, that it is hard to distinguish them; and when a distinct form is evolved the question occurs, What const.i.tutes or ent.i.tles it to specific honours? Surely the form of which we are speaking must be fully ent.i.tled to a name all its own, as it is not possible to find another Saxifrage that can so widely contrast with the whole genus.

It may be as well, in a few words, to refer to one or two varieties; and it shall only be from an amateur's point of view, whose estimate of their worth or importance is based entirely on their ornamental qualities under cultivation. Such varieties, as far as I know, have not had any name given them, descriptive or otherwise, and I for one have no desire to see any, as the genus is already overloaded with names.

[Ill.u.s.tration: FIG. 88. SAXIFRAGA LONGIFOLIA.

(One-fourth natural size.)]

There is, first, a form whose main distinction is its dark olive-green leaves; the ends are rather inclined to be spathulate, they are long, narrow, and arch well, rather nearer the centre of the rosette; this causes the end of the outer circle of leaves to come flat on the ground.

The whole specimen has a sombre appearance compared with the more silvery kinds. The second form has broader leaves, is more distinctly toothed and spotted; as a consequence of their width, the leaves are fewer, and though all the varieties are very formal, this is the most so. When by the side of what we may term the true form, which has sometimes _vera_ added to its name, this one has a plain and somewhat "dumpy" appearance, and frequently the tips of the leaves curl back, which further detracts from its ornamental quality. A third form has small rosettes, pale green foliage, indistinct silvery dots, and, worse than all, the habit of throwing out a progeny of young growths all round the collar, furnishing itself as with a ruff, when the parent rosette turns to a yellowish-green. Of all the forms this is the most constant bloomer. The favourite variety, to which an engraving can do but scant justice, is superior to the above kinds in all its parts. Its blooming period is in early summer, but specimens often grow in size and beauty for three or five years without producing flowers. The foliage is the more admired feature, and is at its greatest beauty in December.

The flowers are borne in handsome panicles, in the style of those of _S.

pyramidalis_, which are about 18in. high. The blossom is of the kind common to this section. The leaves are long, narrow, toothed bluntly, and spotted with silvery dots; the whole leaf is greyish; the habit is rigid and of even arrangement; the rosettes are of all sizes, from 2in.

to 10in. in diameter. At 3in. to 6in. they are attractive, and as they grow larger, they become conspicuous in their beauty. It is not desirable to have them flower, inasmuch as the rosettes are then destroyed, though the plants do not die. Of course, if a specimen "shows bloom" it cannot be helped, but rather than lose a season's produce of young stock I would nip out the "lead," and so cause offsets to be produced instead of flowers.

In the rock garden this is one of the most telling subjects that can be introduced; not only does it love to have its roots amongst the stones, but it is a form which harmonises and yet contrasts finely with such shapeless material, and, further, relieves the sameness of verdure of other plants in a more than ordinary degree. It will grow in borders or beds, but looks nowhere so well as on rockwork. True, its uses are limited, but then they are exceedingly effective. I have grown this subject in almost every kind of soil and compost, and it has done well in most; stiff clay-like loam appears too cold or wet for it; on the other hand, a sandy loam, mixed with leaf soil, grows it finely; perfect drainage is the desideratum, in no matter what position it is planted.

It may be increased in various ways--1st, By seeds, which may be bought, as it is carefully harvested abroad; 2nd, from offsets, as already stated; and, 3rd, from offsets produced by cutting out the leaves in two or more parts, so as to let the light in at the collar. This method may seem heartless, and it certainly spoils the specimen; it is a mode to be followed only where there are spare old plants and young stock is needed.

Flowering period, June and July.

Saxifraga Macnabiana.

MACNAB'S SAXIFRAGA; _Nat. Ord._ SAXIFRAGACEae.

This is a new and very beautiful variety, called after Mr. MacNab, who raised it in 1877. Of the several hundreds of species and varieties of this genus, it is doubtless one of the best and most distinct as regards its habit and rich flowers. So p.r.o.nounced are its merit that, although I have not grown it for more than four years or so, I can have no hesitation in sounding its praise. It is possible that when it has become better established in the collections of amateurs and others, and when it has regained what may be termed its natural vigour, lost by the too rapid propagation common to new plants, it may prove to be even better than I have yet proved it. However that may be, there can at present be only one opinion respecting it.