Rousseaceae

Rousseaceae
Branch of Carpodetus serratus
Systematics
Eudicotyledons Nuclear eudicotyledons Asterids Euasterids II Order : Astern-like (Asterales) Family : Rousseaceae
Scientific name
Rousseaceae
DC.

Rousseaceae are a family of plants in the order of the aster-like (Asterales). They have a disjoint area : on the one hand in New Zealand , in eastern Australia and in Papua New Guinea , on the other hand in Mauritius .

description

The mostly alternate, simple leaves have a serrated or serrated leaf margin.

The hermaphroditic flowers are radial symmetry . There are four to seven free stamens . The ovary is on top. The characteristics of the representatives of the subfamilies differ greatly from one another; see the descriptions in the following section Systematics.

Systematics with distribution and descriptions

Illustration of Abrophyllum ornans

The Rousseaceae together with the Campanulaceae form the basal group of the Asterales . Roussea simplex was formerly part of the Saxifragaceae .

The family Rousseaceae is divided into two subfamilies and contains four genera with about 13 species:

• Subfamily Rousseoideae: There is only one monotypical genus:
  • Roussea Sm .: There is only one type:
    • Roussea simplex Sm .: It isnativeto Mauritius : It is an evergreen, woody climbing plant ( liana ) or small tree. The leaves are opposite. The large flowers are four-fold. The four petals are fused. There are berries formed.
• Subfamily Carpodetoideae J.Lundberg (Syn .: Carpodetaceae Fenzl , Abrophyllaceae Nakai ): There are areas in New Zealand , in eastern Australia and in Papua New Guinea . They are trees . The small flowers are four to six-fold. The ovary is made up of three to six carpels . Capsule fruits are mostly formed. It contains three genera with about twelve species:
  • Abrophyllum Hook. f. ex Benth. ( Syn .: Brachynema F. Muell. ): There are one or two species in eastern Australia. The simple leaves have a serrated leaf margin. The flowers are five-fold. They form spherical berries with many seeds.
    • Abrophyllum ornans (F.Muell.) Hook. f. ex Benth.
  • Carpodetus J.R. Forst . et G.Forst. : Including for example:
    • Carpodetus amplus Reeder : It occurs on the Solomon Islands .
    • Carpodetus arboreus Schltr. : The number of chromosomes is 2n = 30.
    • Carpodetus serratus J.R. Forst . et G.Forst. : This shrub or small tree is native to New Zealand.
  • Cuttsia F. Muell. : They form capsule fruits. There is only one type:
    • Cuttsia viburnea F. Muell. : It occurs in Australia.

swell

• The family of rousseaceae in APWebsite . (engl.)
• Datasheet in the Flora of New South Wales . (engl.)

Individual evidence

1. ^ Rousseaceae in the Germplasm Resources Information Network (GRIN), USDA , ARS , National Genetic Resources Program. National Germplasm Resources Laboratory, Beltsville, Maryland.
2. ↑ Carpodetus arboreus at Tropicos.org. In: IPCN Chromosome Reports . Missouri Botanical Garden, St. Louis

Web links

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