Dasypogon
| Dasypogon | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
||||||||||||
| Systematics | ||||||||||||
|
||||||||||||
| Scientific name | ||||||||||||
| Dasypogon | ||||||||||||
| R.Br. |
Dasypogon is a genus of monocot plants endemic to Australia .
features
Vegetative
The species are clumpy or sometimes tree-shaped herbaceous, perennial plants . The rhizome is short, the stem axis is thick ( pachycaul ). The entire habit is mesophytic to xerophytic. The leaves are alternate and usually form a rosette. The leaves are leathery, and in some species they are modified to thorns. The leaves are sessile and have a leaf sheath . The leaf blade is linear, narrow and long. The nerves run parallel with no 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-shaped species, there are several inflorescences on each trunk, each in the axilla of a leaf. With the other kinds are terminal individually on each branch or trunk. The flowers open first in the center of the inflorescence, further up and down. The flowers are stalked or sessile.
The flowers are regularly threefold and cyclical. The six tepals are in two whorls and are mostly similar. The outer ones can be hardened and dry at the top. The color is white to cream to yellow. The stamens are in two whorls of three each and are all fertile. The ovary is on top and consists of three intergrown carpels that form one or three compartments. The scar has one or three lobes. The ovule placentation is basal in one fan and axillary in three. There is an anatropic to campylotropic ovule per compartment.
The fruits are capsule fruits with a seed. This has endosperm .
distribution
The genus occurs only in the Mediterranean climatic area in southwest Australia.
Systematics
There are only three types:
- Dasypogon bromeliifolius R.Br.
- Dasypogon hookeri J.Drumm.
- Dasypogon obliquifolius Nees
swell
- Dasypogon on Florabase - The Western Australian Flora
Individual evidence
- ↑ Rafaël Govaerts (ed.): Dasypogon. In: World Checklist of Selected Plant Families (WCSP) - The Board of Trustees of the Royal Botanic Gardens, Kew . Retrieved December 3, 2014.
