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Besides the above, we graft Epiphyllums, and the long drooping Cereuses, such as C. flagelliformis, because of their pendent habit, and which, therefore, are seen to better advantage when growing from the tall erect stem of some stouter kind, than if allowed to grow on their own roots.
As in the case of the Epiphyllums, the principal character by which the Phyllocactus is distinguished is well described by the name, the difference between it and Epiphyllum being that in the former the flowers are produced along the margins of the flattened branches, whereas in the latter they are borne on the apices of the short, truncate divisions.
The practice among those who use Pereskias as stocks for Epiphyllums is as follows: Cuttings of P. aculeata are planted in sandy soil, in boxes, and placed on a shelf in a stove till rooted. In about a month they are ready to be planted singly in 3 in. pots, any light soil being used; and each plant is fastened to a stake 1 ft. long.
We do not use the seeds of these plants for their propagation, unless new varieties are desired, when we must begin by fertilising the flowers, and thus obtain seeds, which should be sown and grown on till the plants flower. Epiphyllums have already "broken" from their original or wild characters, and are, therefore, likely to yield distinct varieties from the first sowing.
If taller stocks are required, the plants must be grown on till of the required length and firmness. Large plants may be trained against a wall or along the rafters in a warm house; and when of the required size, the branches may be spurred back, and Epiphyllums, slender Cereuses, and similar plants, grafted upon them.
Cactuses may be multiplied from cuttings of the stems, from seeds, and also by means of grafting; this last method being adopted for those species which, under cultivation, are not easily kept in health when growing upon their own roots, or, as in the case of Epiphyllums, when it offers a means of speedily forming large and shapely specimens.
Gardner, who introduced the Epiphyllums and other Cactuses. It flowered on the way to England, and matured its seeds soon after its arrival. It is a native of Pernambuco. This species appears to have been introduced in 1838, when two plants of it were sent from the West Indian Island, St. Croix, to the Hamburg Botanic Gardens.
Introduced, in 1837, from West Mexico, where it is said to grow in oak forests. This is a small plant, and is intermediate between this genus and the Epiphyllums. It possesses no particular beauty or distinctive character such as would render it of much value for garden purposes. The branches are short, rather narrow and drooping, the margins notched and tinged with red.
The flowers are borne generally on the ends of the branches, and are drooping in habit; in form they are more like the Epiphyllums than the ordinary Phyllocactuses, as they have their petals arranged in a sort of tube about 3 in. long. The fruit is a red berry as large as a gooseberry. Honduras, 1839. Reg. 3031.
During summer all the Phyllocactuses delight in plenty of water, and, when growing freely, a weak solution of manure affords them good food. Epiphyllums must be kept always more or less moist at the root, though, of course, when growing freely, they require more water than when growth has ceased for the year, which happens late in autumn.
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