Hardy Perennials and Old Fashioned Flowers Part 42

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

A hardy evergreen alpine. A native of Carniola, not long discovered, and quite new to English gardens. Though it belongs to a very extensive genus, it is a distinct species; many of the Saxifrages are not so, neither are they sufficiently decorative to merit a place in any but large or scientific gardens. This one, however, is a truly handsome kind, and its flowers are produced amid the snow and during the bleak and dull weather of mid-winter.

The plant in form is a dense cus.h.i.+on of little spiked rosettes, of a dark green colour, slightly silvered. The flowers are produced on bright ruddy stems 3in. high, and are creamy white, nearly the size of a sixpence. Small as the plant is, a moderate sized specimen is very attractive, especially before the flowers open, when they are in their prettiest form. They open slowly and endure nearly two months.

It enjoys light soil and a well drained situation, such as the edge of a border, where strong growing kinds cannot damage it, or on rockwork, where it will be fully exposed to the sun. To be effective, it should be grown into strong clumps, which may easily be done by annually giving a top-dressing of leaf-mould; the older parts of the plant will remain perfectly sound and healthy for years. When it is desirable to propagate it, it may best be done in April, when the tufts should be carefully divided, and its short roots made firm in the soil by one or two stones being placed near.

Flowering period, January to April.



Saxifraga Caesia.

SILVER MOSS, _or_ GREY SAXIFRAGE; _Nat. Ord._ SAXIFRAGACEae.

One of the alpine gems. This has been grown in English gardens since 1752, yet good specimens are rarely met with, though its culture is simple and easy. It is found wild on the Alps of Switzerland, Austria, and the Pyrenees. To the lover of the minute forms of genuine alpine plants, this will be a treasure; it is very distinct in form, habit, and colour. Its tiny rosettes of encrusted leaves can scarcely be said to rise from the ground, and the common name, "silver moss," which it is often called by, most fittingly applies; but perhaps its colour is the main feature of notice. The meaning of its specific name is grey, to which it certainly answers; but so peculiar is the greyness that a more definite description may be useful, in giving which I will quote that of Decandolle and Sprengle: "The _lavender_-blue is a pale blue (caesius); it is mixed with a little grey." This exactly answers to the colour of the pretty Saxifrage under notice, and it is far from a common one in foliage.

The flowers differ but slightly from those of other encrusted forms of the genus, but they are a creamy white, arranged in small panicles on short and slender stems. They are sparingly produced in May and June.

The leaves are in. long, aggregate or in miniature rosettes; in shape, linear-oblong, recurved, and keeled. The upper surface is concave, having marginal dots, evenly disposed; the dots are bright and excavated, and some of the leaves (those of the stems) are scale formed.

The glaucous or lavender-blue colour is beautifully enlivened with the crystal dots. Its habit reminds one of the more distinct forms of lichens, and, when it is grown with suitable companions on rockwork, it has a happy way of showing and adapting itself in such situation; besides, its colour then shows with more effect.

[Ill.u.s.tration: FIG. 82. SAXIFRAGA CaeSIA MAJOR.

(1, single rosette, natural size.)]

There is a variety of this species not yet in general cultivation, and it cannot be too strongly recommended to lovers of the finest forms of rock or alpine plants. It is called _S. c. major_ (see Fig. 82). The name at once suggests the main difference from the type, but there are other features quite as marked as that of its extra size in all its parts; the foliage is more crowded, which seems to cause the largest leaves to become more erect, and the habit, too, perhaps from the same cause, is ball shaped; the small rosettes of thick encrusted leaves, from the manner in which they are packed together, form a rigid ma.s.s, which differs widely both in detail and effect from any other Saxifrage I know.

These dwarf subjects are best suited for rockwork; but another plan, now much practised, is to grow them in pots. This in no way implies that protection is given or needed--these st.u.r.dy subjects are far better fully exposed--but the pot system has advantages; when so planted, the roots are more likely to be placed in a better selected compost, and the specimens can be raised in order to examine their miniature beauties.

The above kinds enjoy a gritty vegetable soil; perfect drainage is indispensable. These are not among the Saxifrages that are readily propagated; a few crowns or rosettes with short pieces of stem are not sure to root, and if more careful division is not carried out, perhaps but two or three growing bits from a large specimen may be the result, so lessening instead of increasing the stock. Before cutting let the roots be washed clear of soil, trace the long roots, and so cut up the plant that each division will have a share of them. Sometimes a rather large specimen will have but few of such roots, in which case it will prove the better and safer plan to make only a corresponding number of divisions, so making sure of each. A further help to such newly planted stock is gained by placing small stones about the collars; this keeps the plants moist and cool during the dry season, when (after flowering) the divisions should be made.

Flowering period, May and June.

Saxifraga Ceratophylla.

HORN-LEAVED SAXIFRAGE; _Nat. Ord._ SAXIFRAGACEae.

For the most part, this numerous genus flowers in spring and early summer, the species now under notice being one of the late bloomers; its flowers however, like most of the Saxifrages, are small and insignificant; on the other hand, its foliage, as may be seen by the ill.u.s.tration (Fig. 83) is highly ornamental. In November, the grand half-globular tufts of rigid dark green foliage are delicately furnished with a whitish exudation, which, seen through a magnifying gla.s.s, resembles scales, but seen by the naked eye--and it can be clearly seen without stooping--it gives the idea of h.o.a.r frost. We have here, then, an interesting and ornamental subject, which, when grown in collections of considerable variety, proves attractive; and as even after many degrees of frost, it retains its beauty, and, I may add, its finest form, it may be confidently recommended as a suitable winter garden subject. This species proves evergreen in our climate, though a native of Spain, from which country it was imported about eighty years ago. It is sometimes called _S. cornutum_, a name quite applicable, and it is frequently confounded with _S. pentadactylis_ (the Five-fingered-leaved Saxifrage), which it much resembles, from which, however, it is distinct in several respects.

[Ill.u.s.tration: FIG. 83. SAXIFRAGA CERATOPHYLLA.

(Leaf, one-half natural size.)]

Its flowers are small, white, and numerous, produced on slender stalks in summer; they are of the general type of the flowers of the mossy section, and need not be further described. The foliage forms rigid cus.h.i.+ons, dense, rounded, and of a dark green colour in the early season; later it becomes grey, with an exudation; the leaves are arranged in rosette form, having stout stalks, channelled or folded on the upper surface; there are three deep divisions, and others less cut; the segments are subulate, bent back and tipped with h.o.r.n.y mucrones, whence its specific name; these horn-like points are bent under, which, together with their transparency, renders them all but invisible; they can, however, be clearly seen if brought near the eye and looked for on the under side of the foliage. The leaves are of good substance, 1in. to 2in. long, having broad stipules; the stems are exceedingly slender in the older parts, and somewhat woody, having the appearance of being dried up and dead.

On rockwork it is seen in its best form, as the slope not only shows it off better, but is conducive to a finer growth. In flat places, the dense cus.h.i.+ons, which are 6in. or 8in. high, often rot from too much moisture. I have never seen this occur in the drier positions afforded by the slopes of a rockery. If planted between large stones it has a happy way of adapting itself to them, and few plants are more effective.

It thrives equally well in soil of a loamy or vegetable character, but it seems to enjoy a little limestone, small pieces of which I place round the specimens; they also serve to hold up the lower foliage and favour the admission of air. Where alpines are grown in pots this should form one, as it makes a charming specimen; the drainage should be perfect. It also makes a capital edging plant, especially for raised beds, as then it is accommodated in the same way as on rockwork.

It may be propagated by taking the slips nearest the earth, which will often be found to have a few rootlets, but if not they will still prove the more suitable; if taken in summer and dibbled into sand, they will make good roots in a week or two, when they may be transplanted to their permanent quarters, so as to become established before winter.

Saxifraga Ciliata.

HAIRY-MARGINED SAXIFRAGE; _Syn._ MEGASEA CILIATA; _Nat. Ord._ SAXIFRAGACEae.

This is a peculiar, distinct, and beautiful form of Saxifrage; there seems, however, to be some confusion in reference to its nomenclature.

That it belongs to the _Megasea_ section there can be little doubt, so that its synonym (_M. ciliata_) is fairly descriptive; but when it is said to be _identical_ with _S. ligulata_, also of the _Megasea_ section, the difficulty of recognising the form ill.u.s.trated as such is very great indeed. It is also supposed to be a _variety_ of _S.

ligulata_, and though it has many important dissimilarities, it has also many affinities. So much does it differ from _S. ligulata_ that it seems to be fully ent.i.tled to the specific honours which some authorities have given to it. It differs from _S. ligulata_, described by Don, in being rough and hairy on both sides of the leaves; in other respects it agrees, more especially in the colour of the flowers, which is uncommon.

It may be the _Megasea ciliata_ of Haworth, which Don refers to under _S. ligulata_, or it may be a distinct form of the latter, as, on the authority of Dr. Wallich, of the Botanical Gardens of Calcutta, the species has varieties. Wherever its proper place may be in its numerous genus, the name at the head hereof is a good descriptive one. It is an Indian contribution, hailing from the mountains east of Bengal. In this climate it endures our winters, though it is not one of the hardiest of its tribe. It has not long been cultivated in this country, and is rarely met with. Its distinct habit and fine flowers render it desirable, and it will with many be more so on the score of its peculiarities. A few of the latter may be mentioned here. Anthers very large, and brick-red before becoming pollenized; scapes and scape-sheaths nearly smooth, though all other foliar parts are hairy; stipules very large and fully developed whilst the leaves are in their rudimentary stage. When not in flower the plant has a strong resemblance to _S. sarmentosa_, which belongs to another section, but _S. ciliata_ has features belonging to both sections. The habit, however, is more flat, and leaves more oval, and if, as has been hinted, this is a hybrid, it may not be without some relations.h.i.+p to that species, which is also of Asian origin. Further, on the authority of Murray, _Sax.

sarmentosa_ is identical with _S. ligulata_; so that, if we may suppose _S. ciliata_ to be a distinct variety of _S. ligulata_, and the latter to have such affinity to _S. sarmentosa_ that Murray puts it as identical, the chief difference between our subject and the form generally accepted as _S. ligulata_ is accounted for, viz., the hairy and rougher surfaces of the leaves, which are traits of the well-known _S. sarmentosa_. If these remarks prove nothing, they may serve to show the difficulty of recognising the various forms and species of so popular a genus from reading alone, it having been so extensively treated of, and the cla.s.sifications being so varied. Its study, when the species are being cultivated, is simply delightful, compared with the confusion of book study alone; and yet it is no uncommon thing, when forming a collection of Saxifrages, to receive three or four different forms from different sources under the same name, and each perhaps more or less authorised. The student by growing this genus of plants will reap other pleasures than that of identification, and in a few years time will find in his own garden (as the outcome of growing allied species) new forms springing from seed, and scattered about the beds and walks in a pleasing and suggestive manner. (See Fig. 84.)

[Ill.u.s.tration: FIG. 84. SAXIFRAGA CILIATA.

(One-fourth natural size; (1) two-thirds natural size.)]

The present subject has bell-shaped flowers, arranged in short-branched panicles, each flower in. across, and sometimes, when well expanded, quite an inch; the colour is a delicate pink-tinted white; petals obovate and concave, inserted in the calyx, clawed, sometimes notched and even lobed; stamens long as petals, inserted in throat of calyx, stout, green changing to pink; anthers large and brick red when young; styles ma.s.sive, joining close together, turgid, nearly long as stamens, and pale green; stigmas, simple, beardless, turning to a red colour; calyx bell-shaped, five-parted, wrinkled; segments slightly reflexed and conniving or joining; scapes 4in. to 6in. high, stout and smooth, excepting solitary hairs; bracts, leaf-like; leaves oval or cordate, 2in. to 4in. long, wrinkled, slightly waved, and toothed, conspicuously ciliated or haired on the margin, whence the specific name "_ciliata_."

Both surfaces are also furnished with short stiff hairs, the whole leaf being stout and flatly arranged; leaf stalks short, thick, and furnished with numerous long hairs, and ample stipules, which are glabrous, but beautifully ciliated. Roots, woody, and slightly creeping on the surface. Habit of foliage reflexing, forming flat ma.s.ses; smaller or supplementary scapes are sent up later than the main scape, from the midst of the stipules, bearing flowers in ones and twos. The blossom, which is effective and very beautiful, is also sweetly scented, like the hawthorn.

As already hinted, this is not one of the most hardy Saxifrages, but I have twice wintered it out on gritty beds, well raised, also on rockwork, under a warm south wall; and, as such positions can be found or made in most gardens, it would be advisable to try and establish this distinct and lovely spring bloomer. Lime and sandstone grit mixed with loam and leaf soil I find to be the best compost I have yet tried for it; in fact, until a dry situation and a little lime were given, it proved a shy bloomer. It is now quite the reverse, notwithstanding that the roots were divided during the previous autumn. Fogs and rain are its greatest plagues, owing to its hairy nature; the gla.s.s and wire shelters should be used for this most deserving subject. Propagated by division of the woody semi-creeping roots during early autumn; each division should have a crown and some roots, when they may be planted in their permanent quarters.

Flowering period, March to May.

Saxifraga (Megasea) Cordifolia.

_Nat. Ord._ SAXIFRAGACEae.

A first-cla.s.s herbaceous perennial, grown for over a hundred years in English gardens; it comes from Siberia, and consequently, it is very hardy in this climate. The _Megasea_ section of the Saxifraga is a very distinct genus; there are several forms with but slight distinctions in the section, but the species now under notice may be readily distinguished from its nearest known relatives, first by its extra size in all its parts, next by its wrinkled heart-shaped leaves.

The flowers are produced on stout stems nearly a foot high, a section of which will cut the size of a sixpenny piece; the rose-coloured flowers are perfectly developed before they push through the many-times over-lapped foliage; they are neatly arranged, the branching stems sometimes giving the panicle of blossom the form and also the size of a moderate bunch of grapes. Just at this stage the flowers, to be most enjoyed, should be cut before the weather spoils their delicate colour.

The fine pale green calyx, which is also conspicuous by its handsome form and extra length, is far from the least important feature of this flower, especially at the above-mentioned stage. The leaves are 6in. to 10in. across.

Of the use of its flowers in a cut state, a few words may be said. The weather soon destroys their beauty, but when cut they may be preserved for fully a fortnight. On one occasion I took a blossom and placed it in a flower stand for single specimen blooms; in this instance all the other gla.s.ses held such fine roses as Baroness Rothschild, Madame Lacharme, and Edouard Morren, but so richly did it compare with these roses that it was given the place of honour--the top centre gla.s.s; this flower I should say had never seen the full light in the open. After that others pushed out of the leaves and were speedily damaged, and not fit to cut.

Flowering period, March to May.

Hardy Perennials and Old Fashioned Flowers Part 42

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