Dasypogon

Dasypogon is a genus of monocotyledonous plants, which is endemic in Australia.

Features

Vegetative

The species are horstige or sometimes tree-like herbaceous perennial plants. The rhizome is short, the shoot axis is thick ( pachycaul ). The entire habitus is mesophytisch to xerophytic. The leaves are alternate and usually form a rosette. The leaves are leathery, modified in some species also thorns. The leaves are sessile and have a leaf sheath. The leaf blade is linear, narrow and long. The nerves run parallel without anastomoses.

Inflorescence and flowers

The inflorescences are terminal or axillary. The stem of the inflorescence is longer than the leaves, hairy and covered with scattered bracts. In the tree-like species is found on each stem several inflorescences, each in the axil of a leaf. For the other species are terminally individually at each branch or trunk. The flowers open first at the center of the inflorescence, further up and down. The flowers are stalked or sessile.

The flowers are regularly ternate and cyclical. The six tepals are available in two whorls and are usually similar. The outer can be hardened on the top and dry. The color is white to cream to yellow. The stamens are in two whorls of three and are all fertile. The ovary is upper constant and consists of three carpels that form one or three compartments. The scar is on or three-lobed. The placentation of the ovule is axillary with a basal compartments in three. There is a anatrope to campylotrope ovule per subject.

The fruits are capsular fruits with a seed. This has endosperm.

Dissemination

The genus is found only in the Mediterranean climate region in the southwest of Australia.

System

There are about 10 species, among others:

• Dasypogon bromeliifolius R.Br.
• Dasypogon hookeri J.Drumm.
• Dasypogon obliquifolius Nees

Swell

• Dasypogon on flora Base - The Western Australian Flora

• Angiosperms
• Magnoliopsida