flavoured fruit, as large as a usual-sized Raspberry, and of a beautiful orange or deep amber colour. It is not valuable as an ornament for the shrubbery, but would be a handsome, agreeable-flavoured fruit for the table. (Figured in Bot. Mag., 4678.)

GAURA LINDHEIMERI.-A plant belonging to the Clarkias, &c. It is a branching perennial herbaceous plant, growing three to four feet high, and blooming in profusion from July to October. The flowers are produced in long twiggy spikes, each blossom being an inch across ; white or deep pink. It is easily increased from seeds, and is best treated as a half-hardy triennial. It does not flower till the second season. If seeds be sown so as to get plants strong enough to endure winter, and being turned into beds in spring, will bloom that season. It is showy for a border of mixed plants, or the skirts of a plantation.

HELIOPHILA PILOSA (Cruciform Order).—A hardy annual from the Cape of Good Hope. It grows about eighteen inches high, and the flowers are produced in terminal spikes, of a bright blue, and each blossom half an inch across. It is a charming ornament for the borders in summer, and seeds freely. It is also called H. arabidoides.

PELARGONIUM FOLIOLOSUM. This is one of what are usually called "Cape Geraniums," Mr. Wicks, a collector of Cape plants, introduced it into England. It is one of the fleshy-rooted species. The flowers are produced in umbels, six or eight blossoms in each; they are of a pale yellow colour. It will be valuable as a breeder, from which some of our light flowers may be impregnated, and larger yellow blossomed varieties be obtained. All the Cape Pelargoniums require to be grown in a good, rich, sandy soil, and to be kept dry in winter. This yellow-flowered species, we understand, is in the Horticultural Society's garden at Chiswick.

HEINTZIA TIGRINA.-Mr. Karstan discovered this noble Gesneraslike plant in shady situations on the mountains of Caraccus, where it grows five or six feet high. The leaves are one foot long. Each blossom is about two inches long, the calyx being of a rich rose-colour, with a green rib in the middle of each sepal. The corolla is pure white, with numerous blood-coloured spots on the expanded portion. It is a fine species, and will become one of the best stove plants. It requires a similar treatment to the Gesneras, Gloxinias, Sumingias, &c. It is in Mr. Van Houtte's collection, in Belgium.

SALVIA REMERIANA.-A native of the Texas, where it grows in the woods. It is a half-shrubby plant, and with us a half-hardy one. The flowers are produced in very long spikes, rather small, of a rich crimson colour. It is in the Chelsea Botanic Garden, and grows about two feet high.

LILIUM GIGANTEUM.-This noble Lily, growing to the height of ten feet, we find will endure without injury in the open ground, having a covering of dry leaves, or ashes over the roots in winter. It ought to be grown in every garden.

LILIUM BROWNII.-A hardy kind, having large trumpet-shaped flowers, white, with the outside marked with bronze-purple.

LILIUM LONGIFLORUM.-The flowers are large, trumpet-shaped, pure white.

These Lilies, with all those of Lilium lancifolium, which are quite hardy, should now be procured and planted immediately for next year's blooming.

Plants in bloom in the Royal Gardens at Kew.

LAPAGERIA ROSEA.-In June, 1850, we gave a figure of this very handsome flower, but it was drawn from a flower produced by a weakly plant. A plant has been grown in the Royal Gardens, out-doors, trained against a wall, where it showed for bloom; being late in the summer, it was taken up and removed into a cool house, appropriated for Ferns, and there trained to the back wall, the roof sloping to the north; the face of the back wall is shaded from the sun, and cool; here it has bloomed charmingly. Each flower is "trumpet-shaped," and the tube four inches long, with the expanded mouth downwards; thus drooping, such large flowers have a very interesting and pretty appearance. They are of a bright rosy-crimson, with the inside beautifully ornamented with numerous white dots. Handsome as was the flower we figured, to which we refer our readers, the flowers at Kew are much superior. It is a native of Chili, an evergreen, half-shrubby plant, adapted for training to a pillar, wall, or wire-work frame. It highly merits a place in every Greenhouse or Conservatory, or trained against a wall. The plant is a free bloomer, and one of the finest that has been introduced for many years.

GYNERIUM ARGENTEUM.-This is the celebrated "Pampas grass of Brazil. There is a noble specimen growing in the open bed in the Royal Gardens, having about thirty flower stems, nearly four yards high, each terminating with a feathery-looking panicled head, two feet long, and of a beautiful silvery appearance. The plant is very numerously furnished with leaves, which are about nine feet long, narrow, and deeply saw-toothed on both edges. The plant requires a rich, deep soil, and to stand alone in an open situation. Its bushy mass of fine leaves, and its magnificent floral stems, present a noble appearance.

GLOXINIA MACULATA.--There are several fine plants in bloom in the stove; one had seven spikes of flowers, three feet high, and the centre spike had had thirty flowers upon it. It is not only a noble growing plant, but its French-white, stout blossoms, with a dark blotch in the inside, are very handsome. It continues to bloom for several months, and if treated with a view to succession, two plants would, started at different but distant times, supply flowers all the year. It merits a place in every stove or warm greenhouse. If the plant be started in a hotbed frame, and retained there till it is a foot or more high, it may be removed into the greenhouse to bloom.

ERANTHEMUM MONTANUM.-Ă neat bushy plant, blooming freely. The tube of each blossom is three inches long, white; the end (limb) is five, parted an inch and a half across, of a pretty French lilac colour. It merits a place in every stove.

CYPRIPEDIUM venustum, C. insigne, and C. barbatum, are in beautiful flower in the stove. These "Ladies' Slippers," are particularly interesting; the singular form, in varied colours of green, with,

yellow, brown, and purple, render them, too, very handsome. They bloom freely throughout autumn and winter.

JUSTICIA SPECIOSA.-This is a showy, winter, blooming, stoveplant, its profusion of rosy-violet flowers are very gay. It forms a neat bush.

TURNERA ELEGANS.--A neat-growing stove-plant, blooming freely. The flowers are funnel-shaped, of a pale yellow colour, having a band of deep yellow, which encircles a black centre; very pretty through

winter.

In the Greenhouse.-ACACIA OLOFOLIA.-A neat plant, with oval leaves about an inch long. The large globe flowers are produced in long spikes, of a deep yellow colour. Blooming thus early renders it more valuable too. It deserves to be in every greenhouse.

ACACIA UNDULCE FOLIA.-Small, waved, neat leaves. The flowers are in small globes, of a bright yellow; pretty.

LASIOPETALUM EROSUM.-A bushy plant. The flowers are in form like those of the potato, lilac, with black anthers, pretty, and are in profusion. It blooms through winter, and well merits a place in the greenhouse.

LABECKIA LANCEOLATA.-A stiff, bushy plant, with bright yellow (Cistus-like) flowers, each blossom an inch across.

LOBELIUS.-Numerous pots of the dwarf-creeping kinds were now in profuse bloom; their bright blue and white flowers had a very pretty appearance.

LOTUS LUTEUS.s.-Plant similar to the well-known dark-flowered in appearance, but the flowers are a bright yellow, and pretty for winter bloom.

CHOROZEMA FLAVA.-A neat plant, now blooming freely. The flowers are of a "bright yellow," with a "white keel" half an inch across. It is very pretty, and merits a place in every greenhouse.

MALVA BILOBA.-A neat shrub, blooming very freely; the flowers are white, an inch across; it appears likely to bloom all winter; it has a cheerful appearance.

THOMASIA STIPULACEA.-A bushy shrub, with a profusion of potato-like flowers, each an inch and a half across; a pale lilac, with a black eye of anthers; pretty.

VERONICA ANDERSONI.-A pretty flowery hybrid. The plant is not such a robust-growing shrub as V. Speciosa, but has long spikes of rosy lavender-coloured flowers; at this season some of the spikes are

white.

In the open border, under south, east, and west aspected walls, there are numerous patches of Oxalis Roseus in profuse bloom. It is a pretty plant for the season. Also Verbena Geranifolia, on the same borders, forms a close broad bush, three feet high, and blooms profusely. The flowers, in heads, are of a most beautiful deep rose-colour. It is a charming plant for autumn bloom out-doors, and in pots would be very ornamental for the greenhouse no doubt through winter. Its pretty jagged, geranium-like foliage has a neat appearance.

The following BERBERISES are very fine kinds:

B. Leschenaulti.-It is an evergreen, each leaf being about fifteen

inches long, having eight pairs of leaflets and a terminal one. It is a most beautiful species, and deserves to be grown in every shrubbery. B. Nepalensis. An evergreen, with light green, large foliage; each leaf having five pairs and a terminal one, with a few strong dentations on each,

B. tenuifolia.-Evergreen, leaves long, with five pairs and a terminal one; smooth, willow-like. Very neat.

In the Stove.-Achimenes Hillii, a hybrid raised here. Its growth is much like a Gesnera, the flowering stem being a yard high, and nearly the whole of it bears blossoms. The leaves are in pairs, and from the base of each five flowers are produced, on rather long footstalks. The tube of each blossom is an inch and a half long, outside scarlet, and the inside of a deep golden yellow, the end (limb) is spotted with red. It is a charming variety, and, like A. picta, appears to be admirable for autumn and winter flowering.

VARIEGATION IN PLANTS.

BY DR. MORREN, PROFESSOR IN THE UNIVERSITY OF LIEGE.

ANCIENT physiologists considered variegated leaves, as well as those having a naturally yellow tinge (when they are generally green in the same species), as particular diseases, which they classed among cachexies, and to which they gave the name of vegetable jaundice. It was not precisely that etiolation which is produced by the absence of light; for if the spotting were a jaundice, etiolation would be attended by chlorosis, or paleness. Variegation has continued to be held as a symptom of disease; neither have the researches which have been made respecting it been attended with any amount of positive information, as to the cause which produces this phenomenon, and especially on the nature of the tissues deviating from their habitual colour. The experiments of Knight on the fertilization of a White Chasselas, and a White Frontignan, by a Vine from Syria, led to the opinion that the variegation might be the result of hybridation, seeing that plants having variegated leaves were obtained by this operation in the instance alluded to. At the present day, when we possess new and more ample details on the streaking of flowers, and on the influence which the variously-coloured pollen exercises in the production of corollas with numerous tints, it would seem still more reasonable to believe that the variegation of leaves in plants raised from seed is indeed a phenomenon of which the first cause has its source in fertilization. But it may be remarked, that the production of a branch with variegated leaves, on an old tree whose leaves are of the usual green, materially invalidates this opinion. Even in plants raised from seed, variegation is a phenomenon sometimes so local that it appears at first absurd to seek the cause of it beyond the organ or part on which it is present. Take, for example, the Oxalis acetosella, on plants of which are sometimes found, among a good number of leaves quite green, one or two presenting a beautiful variegation; that is to say, a yellow reticulation on all the nerves and veins of

the three obcordate folioles. In this case, the phenomenon is evidently quite local; and we shall, by-and-by, demonstrate the organic cause of variegation, this fact will be established beyond all doubt.

In 1830, M. Schlechtendal gave a long enumeration of variegated plants-a list of which is of considerable interest to horticulturistssince these "sickly" plants have excited, sometimes, a singular mania among amateurs, which has so often been turned to advantage by the trade. Miller relates, that in his time, when the variegated hollies were introduced to England, they excited so great a passion, or "rage," that all other plants seemed to be forgotten. We have, ourselves, known an amateur of Liege, who was so fond of these variegated hollies, that he left an order in his will to have a collection of them planted over his grave, and his heirs have religiously fulfilled his wish.

M. De Candolle, who is of opinion that all plants may present variegation, hesitates to class this phenomenon among those of physiology. To him, it appears sometimes a capricious monstrosity, allied to the reproduction of seed,-to hybridation; sometimes a resemblance of atavism. According to the same author, it would still be a spontaneous production, as in the singular case cited by Hales, and since referred to by numerous authors, in which a variegated Jasmine, grafted on a common one, was stated to have communicated its variegation to the leaves below the graft, a circumstance which would be extraordinary. M. Moretti, cited by M. De Candolle, would appear to have concluded from this fact that the variegation is a malady which is capable of being transmitted in all directions in the tree. The physiologist of Geneva, in speaking in another place of variegation, only mentions the yellow and the white, regarding these colours as original, primitive, and preserved in one part, while the green is developed around it. This view is, indeed, admissible as far as regards these tints; but not for the red, brown, or rusty colour, or even the white, which is found in those varieties of variegated trees which horticulturists designate tri-coloured. On a Euonymus europæus, with leaves margined with white, we have seen, it is true, that the youngest leaves, which were scarcely green, were already white at the margin, so that this margin quite preserves its original tint, that which it acquired at its first formation; but on the Acer, the Crataegus, &c., where we find red markings, these are of a subsequent formation, and do not indicate a primitive tint; it is evidently a colour which has been acquired. Moreover, we may add, that on Piper verticillatum we have seen the leaves developed green, and grow to their usual size with that colour; then, by-and-by, the nerves turned white, so much so as to present, when old, that variegation which we have designated under the name of reticulated variegation.

M. De Candolle remarks, that endogenous plants present pale longitudinal bands parallel to the nerves, while oxogenous ones have more irregular spots; a circumstance easily explained by the difference of the system of nervation in the two great orders of plants. This writer further adds, that these bands, or these spots, belong to parts in which the chlorophyll is not perfectly developed, either in quantity or quality, to be rendered green by the action of the sun. The direct cause of this