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Primula Scotica

Scottish Primrose; Nat. Ord. Primulaceæ

This charming little member of the British flora very much resembles the native Bird's-eye Primrose (P. farinosa), which is very common in some parts. It is not uniformly conceded to be a distinct species, but many botanists believe it to be such. As a matter of fact, it is different from P. farinosa in several important points, though they are not seen at a mere glance. That it has darker flowers and a more dwarf and sturdy habit may, indeed, be readily seen when the two are side by side. Size and colour, however, would not in this case appear to be the most distinctive features. The seed organs differ considerably. "In P. farinosa the germen is broadly obovate and the stigma capitate; here the germen is globose and the stigma has five points." But there is another dissimilarity which may or may not prove much to the botanist, but to the lover of flowers who tries to cultivate them it is all-important. Whilst P. farinosa can be easily grown in various soils and positions, in the same garden P. Scotica refuses to live; so fickle, indeed, is it, that were it not a very lovely flower that can be grown and its fastidious requirements easily afforded, it would not have been classed in this list of garden subjects. Here it begins to blossom in the middle of March at the height of 3in. In its habitats in Caithness and the north coast of Sutherland it is considerably later—April and May.

The flowers are arranged in a crowded umbel on a short stoutish scape; they are of a deep-bluish purple, with a yellow eye; the divisions of the corolla are flat and lobed; calyx nearly as long as tube, and ventricose or unevenly swollen. The whole flower is much less than P. farinosa. The leaves are also smaller than those of that species; obovate, lanceolate, denticulate, and very mealy underneath.

To grow it requires not only a light but somewhat spongy soil, as peat and sand, but it should never be allowed to get dry at the roots; a top dressing during summer of sand and half decayed leaves is a great help to it, for the roots are not only then very active, going deep and issuing from the base of the leaves, but they require something they can immediately grow into when just forming, and to be protected from drought. It will be well to remember that its principal habitats are on the sandy shores, as that gives a proper idea of the bottom moisture, and, from the looseness of the sand, the drier condition of the immediate surface. My specimens have always dwindled during summer and failed to appear the following spring, excepting where such treatment as the above has been adopted. I am much indebted for these hints to several amateurs, who grow it well. That many fail with it is evidenced by the facts that it is in great demand every spring and that there are few sources of supply other than its wild home. Never was it more sought for, perhaps, than at the present time, not only by amateurs at home, but by both private and trade growers abroad. The exquisite beauty of this primrose when well grown and the technical care required to have it in that condition are both things of which any plant lover may be proud.

If once established, its propagation is scarcely an affair of the cultivator's; the self-sown seed appears to germinate with far more certainty when left alone, and, as the plants are always very small, they hardly need to be transplanted. If left alone, though they are often much less than an inch across, many will flower the first season. Some have taken it as something of a biennial character. The treatment is at fault when it gives cause for such impressions; its perennial quality is both authorised and proved under cultivation.

Flowering period, March to May.

Primula Sikkimensis

Nat. Ord. Primulaceæ

The specific name of this noble and lovely plant has reference to its habitat, Sikkim, in the Himalayas, where it was found not many years ago. It is not largely cultivated yet—probably not well known. It may, however, be frequently met with in choice collections, where no plant is more worthy of a place. Its general character may be said to be very distinct, especially when in flower. It is herbaceous, hardy, and perennial. Its hardiness has been questioned for several years, but the winters of 1880 and 1881 settled that beyond the region of doubt. I had then many plants of it fully exposed, without even a top-dressing, which is

Fig. 78. Primula Sikkimensis.

(Plant, one-sixth natural size; a, blossom, two-thirds natural size.)

sometimes given to plants of unquestionable hardiness, and they stood the winters as well as their kindred species—our common Cowslip. It was also said to be not more than biennial, as if it were a plant too good to be without some fatal fault for our climate. However, I can say emphatically that it is more than biennial, as the specimens from which the drawing (Fig. 78) is taken are three years old. Several correspondents have written me stating that their plants are dead. That has been during their season of dormancy, but in every case they have pushed at the proper time. I may as well here explain, though somewhat out of order, a peculiarity in reference to the roots of this species: it dies down in early autumn, and the crown seems to retire within the ball of its roots, which are a matted mass of fibres, and not only does it seem to retire, but also to dwindle, so that anyone, with a suspicion, who might be seeking for the vital part, might easily be misled by such appearances, which are further added to by the fact that the species does not start into growth until a late date compared with others of the genus. So peculiar are the roots and crown of this plant, that if a root were dug up in mid-winter, and the soil partly shaken from it, a two-year-old specimen would be found to be the size and shape of a cricket ball, and the position of the crown so difficult to find that, on planting the root again, considerable discrimination would have to be exercised, or the crown might be pointed the wrong way.

P. Sikkimensis is a Cowslip. The flowers are a pale primrose yellow, rendered more pale still by a mealiness which covers the whole stem, being most abundant near the top, but whether it is produced on the petals, or, owing to their bell-shape and pendent form they receive it from the scape and pedicels by the action of the wind, I cannot say. The flowers are considerably over 1in. long; they are numerously produced on long drooping pedicels, of irregular lengths; the tallest scape of the specimen illustrated is 18in. high, but under more favourable conditions this Cowslip has been said to reach a height of 3ft. The leaves are 6in. to 12in. long, wrinkled, unevenly dentate, oblong and blunt; during the time of seeding the leaves increase in length, some becoming spathulate, or broadly stalked; it ripens seed plentifully, from which seedlings come true.

Although I have never grown this noble plant otherwise than in ordinary garden loam well enriched and in shady borders, it is said to be more at home in peaty soil always in a moist state. However that may be, I have proved it to do well under ordinary treatment; it should be well watered during hot dry weather; amongst dwarf trees, in the more damp parts of rockwork, or at the foot of a north wall covered with any kind of foliage, it will be grown and seen to advantage.

Besides by seed, which should be sown as soon as ripened, it may be propagated by root divisions at the time the crowns are pushing in spring.

Flowering period, June and July.

Primula Vulgaris Flore-pleno

Double-flowered Primrose; Nat. Ord. Primulaceæ

It is not intended to descant upon, or even attempt to name, the many forms of Double Primrose; the object is more to direct the attention of the reader to one which is a truly valuable flower and ought to be in every garden. Let me at once state its chief points. Colour, yellow; flowers, large, full, clear, and sweetly scented, produced regularly twice a year; foliage, short, rigid, evergreen, handsome, and supporting the flowers from earth splashes. Having grown this variety for five years, I have proved it to be as stated during both mild and severe seasons. It seems as if it wanted to commence its blooming period about October, from which time to the severest part of winter it affords a goodly amount of flowers; it is then stopped for a while, though its buds can be seen during the whole winter, and when the longer days and vernal sunshine return, it soon becomes thickly covered with blossoms, which are of the most desirable kind for spring gathering.

Its flowers need no further description beyond that already given; but I may add that the stalks are somewhat short, which is an advantage, as the bloom is kept more amongst the leaves and away from the mud. The foliage is truly handsome, short, finely toothed, rolled back, pleasingly wrinkled, and of a pale green colour. It is very hardy, standing all kinds of weather, and I never saw it rot at the older crowns, like so many of the fine varieties, but it goes on growing, forming itself into large tufts a foot and more across.

It has been tried in stiff loam and light vegetable soil; in shade, and fully exposed; it has proved to do equally well in both kinds of soil, but where it received the full force of the summer sun the plants were weak, infested with red spider, and had a poorer crop of flowers. It would, therefore, appear that soil is of little or no importance, but that partial shade is needful. It is not only a variety worth the having, but one which deserves to have the best possible treatment, for flowers in winter—and such flowers—are worth all care.

Flowering periods, late autumn and early spring to June.

Pulmonarias

Lungworts; Nat. Ord. Boraginaceæ

In speaking of these hardy herbaceous perennials, I should wish to be understood that the section, often and more properly called Mertensia, is not included because they are so very distinct in habit and colour of both flowers and foliage. Most of the Pulmonarias begin to flower early in March, and continue to do so for a very long time, quite two months.

For the most part, the flowers (which are borne on stems about 8in. high, in straggling clusters) are of changing colours, as from pink to blue; they are small but pretty, and also have a quaint appearance. The foliage during the blooming period is not nearly developed, the plants being then somewhat small in all their parts, but later the leaf growth goes on rapidly, and some kinds are truly handsome from their fine spreading habit and clear markings of large white spots on the leaves, which are often 9in. or 10in. long and 3in. broad, oblong, lanceolate, taper-pointed, and rough, with stiff hairs. At this stage they would seem to be in their most decorative form, though their flowers, in a cut state, formed into "posies," are very beautiful and really charming when massed for table decoration; on the plant they have a faded appearance.

Many of the species or varieties have but slight distinctions, though all are beautiful. A few may be briefly noticed otherwise than as above:

P. officinalis is British, and typical of several others. Flowers pink, turning to blue; leaves blotted.

P. off. alba differs only in the flowers being an unchanging white.

P. angustifolia, also British, having, as its specific name implies, narrow leaves; flowers bright blue or violet.

P. mollis, in several varieties, comes from North America; is distinct from its leaves being smaller, the markings or spots less distinct, and more thickly covered with soft hairs, whence its name.

P. azurea has not only a well-marked leaf, but also a very bright and beautiful azure flower; it comes from Poland.

P. maculata has the most clearly and richly marked leaf, and perhaps the largest, that being the chief distinction.

P. saccharata is later; its flowers are pink, and not otherwise very distinct from some of the above kinds.

It is not necessary to enumerate others, as the main points of difference are to be found in the above-mentioned kinds.

All are very easily cultivated; any kind of soil will do for them, but they repay liberal treatment by the extra quality of their foliage. Their long and thick fleshy roots allow of their being transplanted at any time of the year. Large clumps, however, are better divided in early spring, even though they are then in flower.

Flowering period, March to May.

Puschkinia Scilloides

Scilla-like Puschkinia, or Striped Squill; Syns. P. Libanotica, Adamsia Scilloides; Nat. Ord. Liliaceæ

As all its names, common and botanical, denote, this charming bulbous plant is like the scillas; it may, therefore, be useful to point out the distinctions which divide them. They are (in the flowers) to be seen at a glance; within the spreading perianth there is a tubular crown or corona, having six lobes and a membranous fringe. This crown is connected at the base of the divisions of the perianth, which divisions do not go to the base of the flower, but form what may be called an outer tube. In the scilla there is no corona, neither a tube, but the petal-like sepals or divisions of the perianth are entire, going to the base of the flower. There are other but less visible differences which need not be further gone into. Although there are but two or three known species of the genus, we have not only a confusion of names, but plants of another genus have been mistaken as belonging to this. Mr. Baker, of Kew, however, has put both the plants and names to their proper belongings, and we are no longer puzzled with a chionodoxa under the name of Puschkinia. This Lilywort came from Siberia in 1819, and was long considered a tender bulb in this climate, and even yet by many it is treated as such. With ordinary care—judicious planting—it not only proves hardy, but increases fast. Still, it is a rare plant, and very seldom seen, notwithstanding its great beauty. It was named by Adams, in honour of the Russian botanist, Count Puschkin, whence the two synonymous names Puschkinia and Adamsia; there is also another name, specific, which, though still used, has become discarded by authorities, viz., P. Libanotica—this was supposed to be in reference to one of its habitats being on Mount Lebanon. During mild winters it flowers in March, and so delicately marked are its blossoms that one must always feel that its beauties are mainly lost from the proverbial harshness of the season.

At the height of 4in. to 8in. the flowers are produced on slender bending scapes, the spikes of blossom are arranged one-sided; each flower is ½in. to nearly 1in. across, white, richly striped with pale blue down the centre, and on both sides of the petal-like divisions. The latter are of equal length, lance-shaped, and finely reflexed; there is a short tube, on the mouth of which is joined the smaller one of the corona. The latter is conspicuous from the reflexed condition of the limb of the perianth, and also from its lobes and membranous fringe being a soft lemon-yellow colour. The pedicels are slender and distant, causing the flower spikes, which are composed of four to eight flowers, to have a lax appearance. The leaves are few, 4in. to 6in. long, lance-shaped, concave, but flatter near the apex, of good substance and a dark green colour; bulb small.

As already stated, a little care is needed in planting this choice bulbous subject. It enjoys a rich, but light soil. It does not so much matter whether it is loamy or of a vegetable nature if it is light and well drained; and, provided it is planted under such conditions and in full sunshine, it will both bloom well and increase. It may be propagated by division of the roots during late summer, when the tops have died off; but only tufts having a crowded appearance should be disturbed for an increase of stock.

Flowering period, March to May.

P. s. compacta is a variety of the above, having a stronger habit and bolder flowers. The latter are more numerous, have shorter pedicels, and are compactly arranged in the spike—whence the name. Culture, propagation, and flowering time, same as last.

Pyrethrum Uliginosum

Marsh Feverfew; Nat. Ord. Compositæ

A very bold and strong growing species, belonging to a numerous genus; it comes to us from Hungary, and has been grown more or less in English gardens a little over sixty years. It is a distinct species, its large flowers, the height to which it grows, and the strength of its willow-like stalks being its chief characteristics. Still, to anyone with but a slight knowledge of hardy plants, it asserts itself at once as a Pyrethrum. It is hardy, herbaceous, and perennial, and worth growing in every garden where there is room for large growing subjects. There is something about this plant when in flower which a bare description fails to explain; to do it justice it should be seen when in full bloom.

Its flowers are large and ox-eye-daisy-like, having a white ray, with yellow centre, but the florets are larger in proportion to the disk; plain and quiet as the individual flowers appear, when seen in numbers (as they always may be seen on well-established specimens), they are strikingly beautiful, the blooms are more than 2in. across, and the mass comes level with the eye, for the stems are over 5ft. high, and though very stout, the branched stems which carry the flowers are slender and gracefully bending. The leaves are smooth, lance-shaped, and sharply toothed, fully 4in. long, and stalkless; they are irregularly but numerously disposed on the stout round stems, and of nearly uniform size and shape until the corymbose branches are reached, i.e., for 4ft. or 5ft. of their length; when the leaves are fully grown they reflex or hang down, and totally hide the stems. This habit, coupled with the graceful and nodding appearance of the large white flowers, renders this a pleasing subject, especially for situations where tall plants are required, such as near and in shrubberies. I grow but one strong specimen, and it looks well between two apple trees, but not over-shaded. The idea in planting it there was to obtain some protection from strong winds, and to avoid the labour and eyesore which staking would create.

It likes a stiff loam, but is not particular as to soil if only it is somewhat damp. The flowers last three weeks; and in a cut state are also very effective; and, whether so appropriated or left on the plant, they will be found to be very enduring. When cutting these flowers, the whole corymb should be taken, as in this particular case we could not wish for a finer arrangement, and being contemporaneous with the Michaelmas daisy, the bloom branches of the two subjects form elegant and fashionable decorations for table or vase use. To propagate this plant, it is only needed to divide the roots in November, and plant in deeply-dug but damp soil.

Flowering period, August to September.

Ramondia Pyrenaica

Syns. Chaixia Myconi and Verbascum Myconi; Nat. Ord. Solanaceæ

This is a very dwarf and beautiful alpine plant, from the Pyrenees, the one and only species of the genus. Although it is sometimes called a Verbascum or Mullien, it is widely distinct from all the plants of that family. To lovers of dwarf subjects this must be one of the most desirable; small as it is, it is full of character.

The flowers, when held up to a good light, are seen to be downy and of ice-like transparency; they are of a delicate, pale, violet colour, and a little more than an inch in diameter, produced on stems 3in. to 4in. high, which are nearly red, and furnished with numerous hairs; otherwise the flower stems are nude, seldom more than two flowers, and oftener only one bloom is seen on a stem. The pedicels, which are about half-an-inch long, bend downwards, but the flowers, when fully expanded, rise a little; the calyx is green, downy, five-parted, the divisions being short and reflexed at their points; the corolla is rotate, flat, and, in the case of flowers several days old, thrown back; the petals are nearly round, slightly uneven, and waved at the edges, having minute protuberances at their base tipped with bright orange, shading to white; the seed organs are very prominent; stamens arrow-shaped; pistil more than twice the length of filaments and anthers combined, white, tipped with green. The leaves are arranged in very flat rosettes, the latter being from four to eight inches across. The foliage is entirely stemless, the nude flower stalks issuing from between the leaves, which are roundly toothed, evenly and deeply wrinkled, and elliptical in outline. Underneath, the ribs are very prominent, and the covering of hairs rather long, as are also those of the edges. On the upper surface the hairs are short and stiff.

In the more moist interstices of rockwork, where, against and between large stones, its roots will be safe from drought, it will not only be a pleasing ornament, but will be likely to thrive and flower well. It is perfectly hardy, but there is one condition of our climate which tries it very much—the wet, and alternate frosts and thaws of winter. From its hairy character and flat form, the plant is scarcely ever dry, and rot sets in. This is more especially the case with specimens planted flat; it is therefore a great help against such climatic conditions to place the plants in rockwork, so that the rosettes are as nearly as possible at right angles with the ground level. Another interesting way to grow this lovely and valuable species is in pans or large pots, but this system requires some shelter in winter, as the plants will be flat. The advantages of this mode are that five or six specimens so grown are very effective. They can, from higher cultivation (by giving them richer soil, liquid manure, and by judicious confinement of their roots), be brought into a more floriferous condition, and when the flowers appear, they can be removed into some cool light situation, under cover, so that their beauties can be more enjoyed, and not be liable to damage by splashing, &c. Plants so grown should be potted in sandy peat, and a few pieces of sandstone placed over the roots, slightly cropping out of the surface; these will not only help to keep the roots from being droughted, but also bear up the rosetted leaves, and so allow a better circulation of air about the collars, that being the place where rot usually sets in. In the case of specimens which do not get proper treatment, or which have undergone a transplanting to their disadvantage, they will often remain perfectly dormant to all appearance for a year or more. Such plants should be moved into a moist fissure in rockwork, east aspect, and the soil should be of a peaty character. This may seem like coddling, and a slur on hardy plants. Here, however, we have a valuable subject, which does not find a home in this climate exactly so happy as its native habitat, but which, with a little care, can have things so adapted to its requirements as to be grown year after year in its finest form; such care is not likely to be withheld by the true lover of choice alpines.

This somewhat slow-growing species may be propagated by division, but only perfectly healthy specimens should be selected for the purpose, early spring being the best time; by seed also it may be increased; the process, however, is slow, and the seedlings will be two years at least before they flower.

Flowering period, May to July.