An unrelated species of caudiciforms, plants with swollen bases that are used to store water, may also display such similarities.

It is hollow, cylindrical, or with a slightly swollen base.

Its other common name is bottle palm, for the swollen base, a water-storage device.

The female flowers are bizarre looking, with a tuft of sticky green tissue emerging from a swollen base.

The stems grow to 2-5 m tall and 12-16 cm diameter, with swollen base.

It is white on the upper part, changing to fawn around the swollen base.

It is pale yellow and more or less cylindrical but may bear a swollen base.

It has symmetrical leaves and develops an attractive swollen base of the trunk.

The rachis is light to reddish-green with a swollen base.

The archegonium has a long neck canal or venter and a swollen base.