The Pregnant Onion or False Sea Onion is native to South Africa.
In Family Asparagaceae, it was previously known as Ornithogalum longibracteatum and O. bracteatum.
It is mainly seen as a house plant because of its interesting bulb.
The bulb, around 6 to 8 cm across, sits mostly above the surface of the soil.
The spherical to ovoid bulbs have a smooth pale green surface that ages to a grey-green.
The fleshy white roots at the base are surrounded by numerous small bulbils.
These fall off and produce new plants resulting in tight clumps.
Around 8 drooping, strap-like leaves grow from the bulb forming a basal rosette.
They are bright green, slightly fleshy and from 0.5 to 1 m long with a tip tapering to a point.
The closely spaced, sheathing bases are up to 5 cm wide.
The leaves die off each year.
The smooth, erect leafless inflorescence stalks are up to 1.5 m long.
The upper 15 to 30 cm of the scape has 100 to 300 small flowers that open from the bottom up.
In whorls of three the flowers are on 5 mm long pedicels that are horizontal to ascending.
At the base of each pedicel is a lanceolate bracteole from 1 to 4 cm long.
Each plant can flower twice a year.
The flowers have 6 elliptic white tepals in two whorls.
The tepals are just under 1 cm long and around 2.5 mm wide.
They have a green stripe on both surfaces and the upper surface has darker green veins down the stripe.
At the tips are small hairs and glands.
The 6 stamens, in 2 whorls do not extend past the perianth.
One whorl has lanceolate filaments and the other three have broad basal appendages.
The superior ovary has 3 locules with numerous ovules.
The style is only a few mms long.
The fruit are green spherical to ovate capsules up to 1 cm long with 3 ribs.
The dark oblong seeds are 4 mm long.