Odontarrhena

Odontarrhena microphylla. Hardy evergreen trailer. Cuttings. Loam and peat.

Odontoglossum

Eight species. Stove epiphytes. Division. Wood and moss.

Eceoclades

Two species. Stove epiphytes. Lateral shoots. Wood and moss.

Edera

Edera prolifera. Green-house evergreen shrub. Cuttings. Sandy loam and peat.

Oenothera

Evening Primrose. Seventeen species. Hardy annuals, biennials and perennials, except the green-house evergreen shrub CE. cheir-anthifolia. Seed; and the perennials also by division. Common light soil.

Offsets

Offsets are side bulbs produced by some bulbous roots, and by which the species can be propagated. Whatever checks the upward growth of the parent plant, as an early breaking down of the stem, compels the sap to find other organs for its reception, and, consequently, promotes the production of offsets. "The practice," says Dr. Lindley, "of scarring the centre of bulbs, the heads of echino cacti, and such plants, and the crown of the stem of species like Littcea geminiflora, in all which cases suckers are the result, is explicable upon the foregoing principle".

Ogechae Lime

Nyssa candicans.

Oil Nut

Hamiltonia.

Okra

"The Okra is a native of the West Indies, where it is much used in soups and stews; its use is rapidly increasing here. There are two varieties, the large and the small podded or capsuled.

"The seeds are planted late in spring, either in rows or hills, three feet apart; the plant thrives readily, and requires no further care than is requisite to keep it free from weeds." - Rural Reg.

Olax

Two species. Stove, evergreen climbers. Cuttings. Loam and peat.

Old-Man's-Beard

Geropogon.

Olea

The Olive. Green-house and stove evergreen trees, except O. sativa, which is hardy. Ripe cuttings, and grafting on the Common Privet [Ligustrum vulgare). Loam and peat.

Oleander

Nerium.

Oleaster

Elaagnus.

Olibanum

Boswellia.

Olive

Olea.

Olive-Wood

Elaodendron.

Olynthia

Olynthia disticha. Stove evergreen tree. Young cuttings. Sandy loam and peat.

Omalanthus

Omalanthus populifolia. Stove evergreen shrub. Ripe cuttings. Peat and loam.

Omime Plant

Plectranthus ter-natus.

Omphalobium

Two species. Stove evergreen shrubs. Ripe cuttings. Light loam and peat.

Omphalades

Eight species. Hardy annuals and herbaceous perennials; the first being increased by seed in open borders; the second by division, in shaded situations.

Oncidium

Fifty-nine species. Stove epiphytes. Shoots, moss, and rotten wood.

Onion-Fly

See Anthomyia and Eumerus.

Oniscus

0. asellus, 0. armadillo. Woodlice.

The first is most easily distinguished from the second by its not rolling up in a globular form when at rest. They are found in old dry dunghills, cucumber frames, etc, and they are injurious to many plants, fruits, etc, by gnawing off the outer skin. Gas lime will expel them from their haunts, and two boards or tiles kept one-eighth of an inch apart form an excellent trap. - Gard. Chron.